Browse through the Pfam families on this page.
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| H-kinase_dim | PF02895.9 | Signal transducing histidine kinase, homodimeric domain |
| H-K_ATPase_N | PF09040.6 | Gastric H+/K+-ATPase, N terminal domain |
| H2TH | PF06831.9 | Formamidopyrimidine-DNA glycosylase H2TH domain |
| HA | PF03457.9 | Helicase associated domain |
| HA2 | PF04408.18 | Helicase associated domain (HA2) |
| HABP4_PAI-RBP1 | PF04774.10 | Hyaluronan / mRNA binding family |
| HAD | PF12710.2 | haloacid dehalogenase-like hydrolase |
| HAD_2 | PF13419.1 | Haloacid dehalogenase-like hydrolase |
| Haemadin | PF09065.5 | Haemadin |
| Haemagg_act | PF05860.8 | haemagglutination activity domain |
| Haemocyan_bet_s | PF14830.1 | Haemocyanin beta-sandwich |
| Haemolytic | PF01809.13 | Haemolytic domain |
| Haem_bd | PF14376.1 | Haem-binding domain |
| Haem_oxygenas_2 | PF14518.1 | Iron-containing redox enzyme |
| Hairpins | PF04877.7 | HrpZ |
| Hairy_orange | PF07527.8 | Hairy Orange |
| Halogen_Hydrol | PF10112.4 | 5-bromo-4-chloroindolyl phosphate hydrolysis protein |
| Halo_GVPC | PF05465.8 | Halobacterial gas vesicle protein C (GVPC) repeat |
| HalX | PF08663.5 | HalX domain |
| HALZ | PF02183.13 | Homeobox associated leucine zipper |
| Ham1p_like | PF01725.11 | Ham1 family |
| Hamartin | PF04388.7 | Hamartin protein |
| HAMP | PF00672.20 | HAMP domain |
| HAND | PF09110.6 | HAND |
| Hanta_G1 | PF01567.11 | Hantavirus glycoprotein G1 |
| Hanta_G2 | PF01561.11 | Hantavirus glycoprotein G2 |
| Hanta_nucleocap | PF00846.13 | Hantavirus nucleocapsid protein |
| HAP | PF03866.8 | Hydrophobic abundant protein (HAP) |
| HAP1_N | PF04849.8 | HAP1 N-terminal conserved region |
| HAP2-GCS1 | PF10699.4 | Male gamete fusion factor |
| Hap4_Hap_bind | PF10297.4 | Minimal binding motif of Hap4 for binding to Hap2/3/5 |
| HapK | PF11639.3 | REDY-like protein HapK |
| Harakiri | PF15196.1 | Activator of apoptosis harakiri |
| HARE-HTH | PF05066.8 | HB1, ASXL, restriction endonuclease HTH domain |
| HARP | PF07443.8 | HepA-related protein (HARP) |
| HAS-barrel | PF09378.5 | HAS barrel domain |
| HasA | PF06438.7 | Heme-binding protein A (HasA) |
| HAT | PF02184.11 | HAT (Half-A-TPR) repeat |
| Hat1_N | PF10394.4 | Histone acetyl transferase HAT1 N-terminus |
| HATPase_c | PF02518.21 | Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase |
| HATPase_c_2 | PF13581.1 | Histidine kinase-like ATPase domain |
| HATPase_c_3 | PF13589.1 | Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase |
| HATPase_c_4 | PF13749.1 | ATP-dependent DNA helicase recG C-terminal |
| HATPase_c_5 | PF14501.1 | GHKL domain |
| HAUS-augmin3 | PF14932.1 | HAUS augmin-like complex subunit 3 |
| HAUS2 | PF15003.1 | HAUS augmin-like complex subunit 2 |
| HAUS4 | PF14735.1 | HAUS augmin-like complex subunit 4 |
| HAUS5 | PF14817.1 | HAUS augmin-like complex subunit 5 |
| HAUS6_N | PF14661.1 | HAUS augmin-like complex subunit 6 N-terminus |
| HbrB | PF08539.6 | HbrB-like |
| HBS1_N | PF08938.5 | HBS1 N-terminus |
| Hc1 | PF07432.8 | Histone H1-like protein Hc1 |
| HC2 | PF07382.6 | Histone H1-like nucleoprotein HC2 |
| HCaRG | PF07258.9 | HCaRG protein |
| HCBP_related | PF06594.6 | Haemolysin-type calcium binding protein related domain |
| Hce2 | PF14856.1 | Pathogen effector; putative necrosis-inducing factor |
| HCMVantigenic_N | PF12154.3 | Glycoprotein B N-terminal antigenic domain of HCMV |
| HCMV_UL139 | PF12507.3 | Human Cytomegalovirus UL139 protein |
| HCNGP | PF07818.8 | HCNGP-like protein |
| HCO3_cotransp | PF00955.16 | HCO3- transporter family |
| HCR | PF07111.7 | Alpha helical coiled-coil rod protein (HCR) |
| HCV_capsid | PF01543.12 | Hepatitis C virus capsid protein |
| HCV_core | PF01542.13 | Hepatitis C virus core protein |
| HCV_env | PF01539.12 | Hepatitis C virus envelope glycoprotein E1 |
| HCV_NS1 | PF01560.12 | Hepatitis C virus non-structural protein E2/NS1 |
| HCV_NS2 | PF01538.13 | Hepatitis C virus non-structural protein NS2 |
| HCV_NS4a | PF01006.15 | Hepatitis C virus non-structural protein NS4a |
| HCV_NS4b | PF01001.14 | Hepatitis C virus non-structural protein NS4b |
| HCV_NS5a | PF01506.14 | Hepatitis C virus non-structural 5a protein membrane anchor |
| HCV_NS5a_1a | PF08300.8 | Hepatitis C virus non-structural 5a zinc finger domain |
| HCV_NS5a_1b | PF08301.8 | Hepatitis C virus non-structural 5a domain 1b |
| HCV_NS5a_C | PF12941.2 | HCV NS5a protein C-terminal region |
| HD | PF01966.17 | HD domain |
| HD-ZIP_N | PF04618.7 | HD-ZIP protein N terminus |
| HDA2-3 | PF11496.3 | Class II histone deacetylase complex subunits 2 and 3 |
| HDAC4_Gln | PF12203.3 | Glutamine rich N terminal domain of histone deacetylase 4 |
| HDC | PF02329.11 | Histidine carboxylase PI chain |
| HdeA | PF06411.6 | HdeA/HdeB family |
| HDNR | PF15115.1 | Domain of unknown function with conserved HDNR motif |
| HDOD | PF08668.7 | HDOD domain |
| HDPD | PF02924.9 | Bacteriophage lambda head decoration protein D |
| HDV_ag | PF01517.13 | Hepatitis delta virus delta antigen |
| HD_2 | PF12917.2 | HD containing hydrolase-like enzyme |
| HD_3 | PF13023.1 | HD domain |
| HD_4 | PF13328.1 | HD domain |
| HD_5 | PF13487.1 | HD domain |
| HD_assoc | PF13286.1 | Phosphohydrolase-associated domain |
| Head-tail_con | PF12236.3 | Bacteriophage head to tail connecting protein |
| Head_binding | PF09008.5 | Head binding |
| HEAT | PF02985.17 | HEAT repeat |
| HEAT_2 | PF13646.1 | HEAT repeats |
| HEAT_EZ | PF13513.1 | HEAT-like repeat |
| HEAT_PBS | PF03130.11 | PBS lyase HEAT-like repeat |
| HECA | PF15353.1 | Headcase protein family homologue |
| HECT | PF00632.20 | HECT-domain (ubiquitin-transferase) |
| HECT_2 | PF09814.4 | HECT-like Ubiquitin-conjugating enzyme (E2)-binding |
| HeH | PF12949.2 | HeH/LEM domain |
| Helicase_C | PF00271.26 | Helicase conserved C-terminal domain |
| Helicase_C_2 | PF13307.1 | Helicase C-terminal domain |
| Helicase_C_3 | PF13625.1 | Helicase conserved C-terminal domain |
| Helicase_C_4 | PF13871.1 | Helicase_C-like |
| Helicase_IV_N | PF12462.3 | DNA helicase IV / RNA helicase N terminal |
| Helicase_RecD | PF05127.9 | Helicase |
| Helicase_Sgs1 | PF11408.3 | Sgs1 RecQ helicase |
| Helitron_like_N | PF14214.1 | Helitron helicase-like domain at N-terminus |
| HeLo | PF14479.1 | Prion-inhibition and propagation |
| HELP | PF03451.9 | HELP motif |
| HEM4 | PF02602.10 | Uroporphyrinogen-III synthase HemD |
| Hemagglutinin | PF00509.13 | Haemagglutinin |
| Hema_esterase | PF03996.10 | Hemagglutinin esterase |
| Hema_HEFG | PF02710.9 | Hemagglutinin domain of haemagglutinin-esterase-fusion glycoprotein |
| Hema_stalk | PF08720.5 | Influenza C hemagglutinin stalk |
| HemeBinding_Shp | PF11545.3 | Cell surface heme-binding protein Shp |
| Hemerythrin | PF01814.18 | Hemerythrin HHE cation binding domain |
| Heme_oxygenase | PF01126.15 | Heme oxygenase |
| HemN_C | PF06969.11 | HemN C-terminal domain |
| Hemocyanin_C | PF03723.9 | Hemocyanin, ig-like domain |
| Hemocyanin_M | PF00372.14 | Hemocyanin, copper containing domain |
| Hemocyanin_N | PF03722.9 | Hemocyanin, all-alpha domain |
| HemolysinCabind | PF00353.14 | Hemolysin-type calcium-binding repeat (2 copies) |
| Hemolysin_N | PF12563.3 | Hemolytic toxin N terminal |
| Hemopexin | PF00045.14 | Hemopexin |
| HemS | PF05171.7 | Haemin-degrading HemS.ChuX domain |
| HemX | PF04375.9 | HemX |
| HemY_N | PF07219.8 | HemY protein N-terminus |
| Hen1_L | PF12623.2 | RNA repair, ligase-Pnkp-associating, region of Hen1 |
| Hepar_II_III | PF07940.8 | Heparinase II/III-like protein |
| Hepatitis_core | PF00906.15 | Hepatitis core antigen |
| Hepcidin | PF06446.7 | Hepcidin |
| HEPN | PF05168.9 | HEPN domain |
| HEPPP_synt_1 | PF07307.6 | Heptaprenyl diphosphate synthase (HEPPP synthase) subunit 1 |
| Hepsin-SRCR | PF09272.5 | Hepsin, SRCR |
| Hep_59 | PF07052.6 | Hepatocellular carcinoma-associated antigen 59 |
| Hep_core_N | PF08290.6 | Hepatitis core protein, putative zinc finger |
| Herp-Cyclin | PF09241.5 | Herpesviridae viral cyclin |
| Herpes_alk_exo | PF01771.12 | Herpesvirus alkaline exonuclease |
| Herpes_BBRF1 | PF04793.7 | BRRF1-like protein |
| Herpes_BLLF1 | PF05109.8 | Herpes virus major outer envelope glycoprotein (BLLF1) |
| Herpes_BLRF2 | PF05812.7 | Herpesvirus BLRF2 protein |
| Herpes_BMRF2 | PF04633.7 | Herpesvirus BMRF2 protein |
| Herpes_BTRF1 | PF04682.7 | Herpesvirus BTRF1 protein conserved region |
| Herpes_capsid | PF06112.6 | Gammaherpesvirus capsid protein |
| Herpes_DNAp_acc | PF04929.7 | Herpes DNA replication accessory factor |
| Herpes_env | PF01673.13 | Herpesvirus putative major envelope glycoprotein |
| Herpes_gE | PF02480.11 | Alphaherpesvirus glycoprotein E |
| Herpes_gI | PF01688.12 | Alphaherpesvirus glycoprotein I |
| Herpes_glycop | PF01528.11 | Herpesvirus glycoprotein M |
| Herpes_glycop_D | PF01537.12 | Herpesvirus glycoprotein D/GG/GX domain |
| Herpes_glycop_H | PF02489.11 | Herpesvirus glycoprotein H |
| Herpes_gp2 | PF05955.6 | Equine herpesvirus glycoprotein gp2 |
| Herpes_Helicase | PF02689.9 | Helicase |
| Herpes_heli_pri | PF05774.6 | Herpesvirus helicase-primase complex component |
| Herpes_HEPA | PF03324.9 | Herpesvirus DNA helicase/primase complex associated protein |
| Herpes_ICP4_C | PF03585.9 | Herpesvirus ICP4-like protein C-terminal region |
| Herpes_ICP4_N | PF03584.10 | Herpesvirus ICP4-like protein N-terminal region |
| Herpes_IE1 | PF07340.6 | Cytomegalovirus IE1 protein |
| Herpes_IE2_3 | PF03361.9 | Herpes virus intermediate/early protein 2/3 |
| Herpes_IE68 | PF02479.11 | Herpesvirus immediate early protein |
| Herpes_IR6 | PF06307.7 | Herpesvirus IR6 protein |
| Herpes_LAMP2 | PF06126.6 | Herpesvirus Latent membrane protein 2 |
| Herpes_LMP1 | PF05297.6 | Herpesvirus latent membrane protein 1 (LMP1) |
| Herpes_LMP2 | PF07415.6 | Gammaherpesvirus latent membrane protein (LMP2) protein |
| Herpes_LP | PF03363.8 | Herpesvirus leader protein |
| Herpes_MCP | PF03122.9 | Herpes virus major capsid protein |
| Herpes_ORF11 | PF04797.8 | Herpesvirus dUTPase protein |
| Herpes_ori_bp | PF02399.10 | Origin of replication binding protein |
| Herpes_PAP | PF03325.8 | Herpesvirus polymerase accessory protein |
| Herpes_pp38 | PF04846.8 | Herpesvirus pp38 phosphoprotein |
| Herpes_pp85 | PF04637.7 | Herpesvirus phosphoprotein 85 (HHV6-7 U14/HCMV UL25) |
| Herpes_TAF50 | PF03326.8 | Herpesvirus transcription activation factor (transactivator) |
| Herpes_teg_N | PF04843.7 | Herpesvirus tegument protein, N-terminal conserved region |
| Herpes_TK | PF00693.13 | Thymidine kinase from herpesvirus |
| Herpes_TK_C | PF08465.5 | Thymidine kinase from Herpesvirus C-terminal |
| Herpes_U15 | PF05613.6 | Human herpesvirus U15 protein |
| Herpes_U26 | PF07402.6 | Human herpesvirus U26 protein |
| Herpes_U30 | PF04523.8 | Herpes virus tegument protein U30 |
| Herpes_U34 | PF04541.8 | Herpesvirus virion protein U34 |
| Herpes_U44 | PF04533.8 | Herpes virus U44 protein |
| Herpes_U47 | PF05467.6 | Herpesvirus glycoprotein U47 |
| Herpes_U5 | PF05999.6 | Herpesvirus U5-like family |
| Herpes_U55 | PF06501.6 | Human herpesvirus U55 protein |
| Herpes_U59 | PF04529.7 | Herpesvirus U59 protein |
| Herpes_UL1 | PF05259.6 | Herpesvirus glycoprotein L |
| Herpes_UL14 | PF03580.9 | Herpesvirus UL14-like protein |
| Herpes_UL16 | PF03044.9 | Herpesvirus UL16/UL94 family |
| Herpes_UL17 | PF04559.7 | Herpesvirus UL17 protein |
| Herpes_UL20 | PF04544.7 | Herpesvirus egress protein UL20 |
| Herpes_UL21 | PF03252.8 | Herpesvirus UL21 |
| Herpes_UL24 | PF01646.11 | Herpes virus protein UL24 |
| Herpes_UL25 | PF01499.11 | Herpesvirus UL25 family |
| Herpes_UL3 | PF03369.8 | Herpesvirus UL3 protein |
| Herpes_UL31 | PF02718.9 | Herpesvirus UL31-like protein |
| Herpes_UL32 | PF06070.6 | Herpesvirus large structural phosphoprotein UL32 |
| Herpes_UL33 | PF03581.8 | Herpesvirus UL33-like protein |
| Herpes_UL35 | PF04496.7 | Herpesvirus UL35 family |
| Herpes_UL36 | PF03586.8 | Herpesvirus UL36 tegument protein |
| Herpes_UL37_1 | PF03970.8 | Herpesvirus UL37 tegument protein |
| Herpes_UL37_2 | PF07413.6 | Betaherpesvirus immediate-early glycoprotein UL37 |
| Herpes_UL4 | PF03277.8 | Herpesvirus UL4 family |
| Herpes_UL42 | PF02282.11 | DNA polymerase processivity factor (UL42) |
| Herpes_UL43 | PF05072.8 | Herpesvirus UL43 protein |
| Herpes_UL45 | PF05473.7 | UL45 protein |
| Herpes_UL46 | PF03387.9 | Herpesvirus UL46 protein |
| Herpes_UL47 | PF03362.8 | Herpesvirus UL47 protein |
| Herpes_UL49_1 | PF03117.9 | UL49 family |
| Herpes_UL49_2 | PF04823.7 | Herpesvirus UL49 tegument protein |
| Herpes_UL49_5 | PF05702.6 | Herpesvirus UL49.5 envelope/tegument protein |
| Herpes_UL51 | PF04540.8 | Herpesvirus UL51 protein |
| Herpes_UL52 | PF03121.10 | Herpesviridae UL52/UL70 DNA primase |
| Herpes_UL55 | PF04537.7 | Herpesvirus UL55 protein |
| Herpes_UL56 | PF04534.7 | Herpesvirus UL56 protein |
| Herpes_UL6 | PF01763.11 | Herpesvirus UL6 like |
| Herpes_UL69 | PF05459.7 | Herpesvirus transcriptional regulator family |
| Herpes_UL7 | PF01677.11 | Herpesvirus UL7 like |
| Herpes_UL73 | PF03554.8 | UL73 viral envelope glycoprotein |
| Herpes_UL74 | PF07982.7 | Herpes UL74 glycoproteins |
| Herpes_UL79 | PF03049.9 | UL79 family |
| Herpes_UL82_83 | PF05784.6 | Betaherpesvirus UL82/83 protein N terminus |
| Herpes_UL87 | PF03043.9 | Herpesvirus UL87 family |
| Herpes_UL92 | PF03048.9 | UL92 family |
| Herpes_UL95 | PF03038.9 | UL95 family |
| Herpes_US12 | PF05363.7 | Herpesvirus US12 family |
| Herpes_US9 | PF06072.6 | Alphaherpesvirus tegument protein US9 |
| Herpes_V23 | PF01802.12 | Herpesvirus VP23 like capsid protein |
| Herpes_VP19C | PF03327.9 | Herpesvirus capsid shell protein VP19C |
| Herpeto_peptide | PF14409.1 | Ribosomally synthesized peptide in Herpetosiphon |
| HERV-K_env_2 | PF13804.1 | Retro-transcribing viruses envelope glycoprotein |
| HET | PF06985.6 | Heterokaryon incompatibility protein (HET) |
| Het-C | PF07217.6 | Heterokaryon incompatibility protein Het-C |
| HET-s_218-289 | PF11558.3 | Het-s 218-289 |
| HEV_ORF1 | PF02444.11 | Hepatitis E virus ORF-2 (Putative capsid protein) |
| Hexapep | PF00132.19 | Bacterial transferase hexapeptide (six repeats) |
| Hexapep_2 | PF14602.1 | Hexapeptide repeat of succinyl-transferase |
| HEXIM | PF15313.1 | Hexamethylene bis-acetamide-inducible protein |
| Hexokinase_1 | PF00349.16 | Hexokinase |
| Hexokinase_2 | PF03727.11 | Hexokinase |
| Hexose_dehydrat | PF03559.9 | NDP-hexose 2,3-dehydratase |
| Hex_IIIa | PF02455.11 | Hexon-associated protein (IIIa) |
| He_PIG | PF05345.7 | Putative Ig domain |
| He_PIG_assoc | PF10632.4 | He_PIG associated, NEW1 domain of bacterial glycohydrolase |
| HflK_N | PF12221.3 | Bacterial membrane protein N terminal |
| HGD-D | PF06050.8 | 2-hydroxyglutaryl-CoA dehydratase, D-component |
| HgmA | PF04209.8 | homogentisate 1,2-dioxygenase |
| HGTP_anticodon | PF03129.15 | Anticodon binding domain |
| HGTP_anticodon2 | PF12745.2 | Anticodon binding domain of tRNAs |
| HGWP | PF03578.10 | HGWP repeat |
| HHA | PF05321.6 | Haemolysin expression modulating protein |
| HHH | PF00633.18 | Helix-hairpin-helix motif |
| HhH-GPD | PF00730.20 | HhH-GPD superfamily base excision DNA repair protein |
| HHH_2 | PF12826.2 | Helix-hairpin-helix motif |
| HHH_3 | PF12836.2 | Helix-hairpin-helix motif |
| HHH_4 | PF14490.1 | Helix-hairpin-helix containing domain |
| HHH_5 | PF14520.1 | Helix-hairpin-helix domain |
| HHH_6 | PF14579.1 | Helix-hairpin-helix motif |
| HHH_7 | PF14635.1 | Helix-hairpin-helix motif |
| HHH_8 | PF14716.1 | Helix-hairpin-helix domain |
| HHV6-IE | PF03753.8 | Human herpesvirus 6 immediate early protein |
| HH_signal | PF01085.13 | Hedgehog amino-terminal signalling domain |
| HI0933_like | PF03486.9 | HI0933-like protein |
| HiaBD2 | PF15403.1 | HiaBD2_N domain of Trimeric autotransporter adhesin (GIN) |
| HicB | PF05534.7 | HicB family |
| Hid1 | PF12722.2 | High-temperature-induced dauer-formation protein |
| HIF-1 | PF11413.3 | Hypoxia-inducible factor-1 |
| HIF-1a_CTAD | PF08778.5 | HIF-1 alpha C terminal transactivation domain |
| HIGH_NTase1 | PF05636.6 | HIGH Nucleotidyl Transferase |
| HIG_1_N | PF04588.8 | Hypoxia induced protein conserved region |
| HILPDA | PF15220.1 | Hypoxia-inducible lipid droplet-associated |
| HIM1 | PF08732.5 | HIM1 |
| HIN | PF02760.10 | HIN-200/IF120x domain |
| Hint | PF01079.15 | Hint module |
| Hint_2 | PF13403.1 | Hint domain |
| HipA_C | PF07804.7 | HipA-like C-terminal domain |
| HipA_N | PF07805.7 | HipA-like N-terminal domain |
| HIPIP | PF01355.12 | High potential iron-sulfur protein |
| Hira | PF07569.6 | TUP1-like enhancer of split |
| HIRAN | PF08797.6 | HIRAN domain |
| HIRA_B | PF09453.5 | HIRA B motif |
| Hirudin | PF00713.12 | Hirudin |
| HisG | PF01634.13 | ATP phosphoribosyltransferase |
| HisG_C | PF08029.6 | HisG, C-terminal domain |
| HisKA | PF00512.20 | His Kinase A (phospho-acceptor) domain |
| HisKA_2 | PF07568.7 | Histidine kinase |
| HisKA_3 | PF07730.8 | Histidine kinase |
| HisK_N | PF09385.5 | Histidine kinase N terminal |
| Histidinol_dh | PF00815.15 | Histidinol dehydrogenase |
| Histone | PF00125.19 | Core histone H2A/H2B/H3/H4 |
| Histone_HNS | PF00816.16 | H-NS histone family |
| Hist_deacetyl | PF00850.14 | Histone deacetylase domain |
| Hist_rich_Ca-bd | PF10529.4 | Histidine-rich Calcium-binding repeat region |
| His_binding | PF02098.11 | Tick histamine binding protein |
| His_biosynth | PF00977.16 | Histidine biosynthesis protein |
| His_kinase | PF06580.8 | Histidine kinase |
| His_leader | PF08047.6 | Histidine operon leader peptide |
| His_Phos_1 | PF00300.17 | Histidine phosphatase superfamily (branch 1) |
| His_Phos_2 | PF00328.17 | Histidine phosphatase superfamily (branch 2) |
| HIT | PF01230.18 | HIT domain |
| Hjc | PF01870.13 | Archaeal holliday junction resolvase (hjc) |
| HJURP_C | PF12347.3 | Holliday junction regulator protein family C-terminal repeat |
| HJURP_mid | PF12346.3 | Holliday junction recognition protein-associated repeat |
| HK | PF02110.10 | Hydroxyethylthiazole kinase family |
| HK97-gp10_like | PF04883.7 | Bacteriophage HK97-gp10, putative tail-component |
| HLH | PF00010.21 | Helix-loop-helix DNA-binding domain |
| HlyC | PF02794.11 | RTX toxin acyltransferase family |
| HlyD | PF00529.15 | HlyD family secretion protein |
| HlyD_2 | PF12700.2 | HlyD family secretion protein |
| HlyD_3 | PF13437.1 | HlyD family secretion protein |
| HlyE | PF06109.8 | Haemolysin E (HlyE) |
| HlyIII | PF03006.15 | Haemolysin-III related |
| HlyU | PF10115.4 | Transcriptional activator HlyU |
| HMA | PF00403.21 | Heavy-metal-associated domain |
| HMD | PF03201.11 | H2-forming N5,N10-methylene-tetrahydromethanopterin dehydrogenase |
| HMG-CoA_red | PF00368.13 | Hydroxymethylglutaryl-coenzyme A reductase |
| HMG14_17 | PF01101.13 | HMG14 and HMG17 |
| HMGL-like | PF00682.14 | HMGL-like |
| HMG_box | PF00505.14 | HMG (high mobility group) box |
| HMG_box_2 | PF09011.5 | HMG-box domain |
| HMG_box_5 | PF14887.1 | HMG (high mobility group) box 5 |
| HMG_CoA_synt_C | PF08540.5 | Hydroxymethylglutaryl-coenzyme A synthase C terminal |
| HMG_CoA_synt_N | PF01154.12 | Hydroxymethylglutaryl-coenzyme A synthase N terminal |
| HmuY | PF14064.1 | HmuY protein |
| HN | PF00423.14 | Haemagglutinin-neuraminidase |
| HNF-1A_C | PF04813.7 | Hepatocyte nuclear factor 1 (HNF-1), alpha isoform C terminus |
| HNF-1B_C | PF04812.8 | Hepatocyte nuclear factor 1 (HNF-1), beta isoform C terminus |
| HNF-1_N | PF04814.8 | Hepatocyte nuclear factor 1 (HNF-1), N terminus |
| HNF_C | PF09354.5 | HNF3 C-terminal domain |
| HNH | PF01844.18 | HNH endonuclease |
| HNH_2 | PF13391.1 | HNH endonuclease |
| HNH_3 | PF13392.1 | HNH endonuclease |
| HNH_4 | PF13395.1 | HNH endonuclease |
| HNH_5 | PF14279.1 | HNH endonuclease |
| HNOB | PF07700.10 | Heme NO binding |
| HNOBA | PF07701.9 | Heme NO binding associated |
| HnRNPA1 | PF11627.3 | Nuclear factor hnRNPA1 |
| HnRNP_M | PF11532.3 | Heterogeneous nuclear ribonucleoprotein M |
| HOASN | PF14515.1 | Haem-oxygenase-associated N-terminal helices |
| HobA | PF12163.3 | DNA replication regulator |
| HOK_GEF | PF01848.11 | Hok/gef family |
| Holin_BlyA | PF05102.7 | holin, BlyA family |
| Holin_LLH | PF09682.5 | Phage holin protein (Holin_LLH) |
| Homeobox | PF00046.24 | Homeobox domain |
| Homeobox_KN | PF05920.6 | Homeobox KN domain |
| Homez | PF11569.3 | Homeodomain leucine-zipper encoding, Homez |
| Homoserine_dh | PF00742.14 | Homoserine dehydrogenase |
| Hom_end | PF05204.9 | Homing endonuclease |
| Hom_end_hint | PF05203.11 | Hom_end-associated Hint |
| HOOK | PF05622.7 | HOOK protein |
| HopJ | PF08888.6 | HopJ type III effector protein |
| HopW1-1 | PF15457.1 | Type III T3SS secreted effector HopW1-1/HopPmaA |
| HORMA | PF02301.13 | HORMA domain |
| Hormone_1 | PF00103.15 | Somatotropin hormone family |
| Hormone_2 | PF00123.15 | Peptide hormone |
| Hormone_3 | PF00159.13 | Pancreatic hormone peptide |
| Hormone_4 | PF00220.12 | Neurohypophysial hormones, N-terminal Domain |
| Hormone_5 | PF00184.12 | Neurohypophysial hormones, C-terminal Domain |
| Hormone_6 | PF00236.13 | Glycoprotein hormone |
| Hormone_recep | PF00104.25 | Ligand-binding domain of nuclear hormone receptor |
| Host_attach | PF10116.4 | Protein required for attachment to host cells |
| Hox9_act | PF04617.8 | Hox9 activation region |
| HoxA13_N | PF12284.3 | Hox protein A13 N terminal |
| HpaB | PF03241.8 | 4-hydroxyphenylacetate 3-hydroxylase C terminal |
| HpaB_N | PF11794.3 | 4-hydroxyphenylacetate 3-hydroxylase N terminal |
| HpaP | PF09483.5 | Type III secretion protein (HpaP) |
| HpcH_HpaI | PF03328.9 | HpcH/HpaI aldolase/citrate lyase family |
| HPD | PF05044.7 | Homeo-prospero domain |
| Hph | PF13694.1 | Sec63/Sec62 complex-interacting family |
| HPHLAWLY | PF14925.1 | Domain of unknown function |
| HPIH | PF13323.1 | N-terminal domain with HPIH motif |
| HPIP | PF15226.1 | HCF-1 beta-propeller-interacting protein family |
| HPP | PF04982.8 | HPP family |
| HPPK | PF01288.15 | 7,8-dihydro-6-hydroxymethylpterin-pyrophosphokinase (HPPK) |
| Hpre_diP_synt_I | PF07456.6 | Heptaprenyl diphosphate synthase component I |
| Hpr_kinase_C | PF07475.7 | HPr Serine kinase C-terminal domain |
| Hpr_kinase_N | PF02603.11 | HPr Serine kinase N terminus |
| HPS3_C | PF14763.1 | Hermansky-Pudlak syndrome 3, C-terminal |
| HPS3_Mid | PF14762.1 | Hermansky-Pudlak syndrome 3, middle region |
| HPS3_N | PF14761.1 | Hermansky-Pudlak syndrome 3 |
| Hpt | PF01627.18 | Hpt domain |
| HP_OMP | PF01856.12 | Helicobacter outer membrane protein |
| HP_OMP_2 | PF02521.9 | Putative outer membrane protein |
| HR1 | PF02185.11 | Hr1 repeat |
| HrcA | PF01628.16 | HrcA protein C terminal domain |
| HrcA_DNA-bdg | PF03444.10 | Winged helix-turn-helix transcription repressor, HrcA DNA-binding |
| HRDC | PF00570.18 | HRDC domain |
| HRM | PF02793.17 | Hormone receptor domain |
| HrpA_pilin | PF09589.5 | HrpA pilus formation protein |
| HrpB1_HrpK | PF09613.5 | Bacterial type III secretion protein (HrpB1_HrpK) |
| HrpB2 | PF09487.5 | Bacterial type III secretion protein (HrpB2) |
| HrpB4 | PF09502.5 | Bacterial type III secretion protein (HrpB4) |
| HrpB7 | PF09486.5 | Bacterial type III secretion protein (HrpB7) |
| HrpB_C | PF08482.5 | ATP-dependent helicase C-terminal |
| HrpE | PF06188.7 | HrpE/YscL/FliH and V-type ATPase subunit E |
| HrpF | PF06266.7 | HrpF protein |
| HrpJ | PF07201.6 | HrpJ-like domain |
| Hrs_helical | PF12210.3 | Hepatocyte growth factor-regulated tyrosine kinase substrate |
| HRXXH | PF13933.1 | Putative peptidase family |
| HR_lesion | PF05514.6 | HR-like lesion-inducing |
| Hs1pro-1_C | PF07014.7 | Hs1pro-1 protein C-terminus |
| Hs1pro-1_N | PF07231.7 | Hs1pro-1 N-terminus |
| HS1_rep | PF02218.10 | Repeat in HS1/Cortactin |
| HSA | PF07529.8 | HSA |
| HsbA | PF12296.3 | Hydrophobic surface binding protein A |
| HSBP1 | PF06825.7 | Heat shock factor binding protein 1 |
| HSCB_C | PF07743.8 | HSCB C-terminal oligomerisation domain |
| HSD3 | PF15244.1 | Hydroxy-steroid dehydrogenase |
| HsdM_N | PF12161.3 | HsdM N-terminal domain |
| HSDR_N | PF04313.9 | Type I restriction enzyme R protein N terminus (HSDR_N) |
| HSDR_N_2 | PF13588.1 | Type I restriction enzyme R protein N terminus (HSDR_N) |
| HSF_DNA-bind | PF00447.12 | HSF-type DNA-binding |
| HSL_N | PF06350.7 | Hormone-sensitive lipase (HSL) N-terminus |
| HSNSD | PF12062.3 | heparan sulfate-N-deacetylase |
| HSP20 | PF00011.16 | Hsp20/alpha crystallin family |
| HSP33 | PF01430.14 | Hsp33 protein |
| HSP70 | PF00012.15 | Hsp70 protein |
| HSP90 | PF00183.13 | Hsp90 protein |
| HSP9_HSP12 | PF04119.7 | Heat shock protein 9/12 |
| HSV_VP16_C | PF12149.3 | Herpes simplex virus virion protein 16 C terminal |
| HtaA | PF04213.8 | Htaa |
| HTHP | PF11534.3 | Hexameric tyrosine-coordinated heme protein (HTHP) |
| HTH_1 | PF00126.22 | Bacterial regulatory helix-turn-helix protein, lysR family |
| HTH_10 | PF04967.7 | HTH DNA binding domain |
| HTH_11 | PF08279.7 | HTH domain |
| HTH_12 | PF08461.5 | Ribonuclease R winged-helix domain |
| HTH_13 | PF11972.3 | HTH DNA binding domain |
| HTH_15 | PF12324.3 | Helix-turn-helix domain of alkylmercury lyase |
| HTH_16 | PF12645.2 | Helix-turn-helix domain |
| HTH_17 | PF12728.2 | Helix-turn-helix domain |
| HTH_18 | PF12833.2 | Helix-turn-helix domain |
| HTH_19 | PF12844.2 | Helix-turn-helix domain |
| HTH_20 | PF12840.2 | Helix-turn-helix domain |
| HTH_21 | PF13276.1 | HTH-like domain |
| HTH_22 | PF13309.1 | HTH domain |
| HTH_23 | PF13384.1 | Homeodomain-like domain |
| HTH_24 | PF13412.1 | Winged helix-turn-helix DNA-binding |
| HTH_25 | PF13413.1 | Helix-turn-helix domain |
| HTH_26 | PF13443.1 | Cro/C1-type HTH DNA-binding domain |
| HTH_27 | PF13463.1 | Winged helix DNA-binding domain |
| HTH_28 | PF13518.1 | Helix-turn-helix domain |
| HTH_29 | PF13551.1 | Winged helix-turn helix |
| HTH_3 | PF01381.17 | Helix-turn-helix |
| HTH_30 | PF13556.1 | PucR C-terminal helix-turn-helix domain |
| HTH_31 | PF13560.1 | Helix-turn-helix domain |
| HTH_32 | PF13565.1 | Homeodomain-like domain |
| HTH_33 | PF13592.1 | Winged helix-turn helix |
| HTH_34 | PF13601.1 | Winged helix DNA-binding domain |
| HTH_35 | PF13693.1 | Winged helix-turn-helix DNA-binding |
| HTH_36 | PF13730.1 | Helix-turn-helix domain |
| HTH_37 | PF13744.1 | Helix-turn-helix domain |
| HTH_38 | PF13936.1 | Helix-turn-helix domain |
| HTH_39 | PF14090.1 | Helix-turn-helix domain |
| HTH_40 | PF14493.1 | Helix-turn-helix domain |
| HTH_41 | PF14502.1 | Helix-turn-helix domain |
| HTH_42 | PF06224.7 | Winged helix DNA-binding domain |
| HTH_43 | PF09904.4 | Winged helix-turn helix |
| HTH_44 | PF14641.1 | Helix-turn-helix DNA-binding domain of SPT6 |
| HTH_45 | PF14947.1 | Winged helix-turn-helix |
| HTH_5 | PF01022.15 | Bacterial regulatory protein, arsR family |
| HTH_6 | PF01418.12 | Helix-turn-helix domain, rpiR family |
| HTH_7 | PF02796.10 | Helix-turn-helix domain of resolvase |
| HTH_8 | PF02954.14 | Bacterial regulatory protein, Fis family |
| HTH_9 | PF08221.6 | RNA polymerase III subunit RPC82 helix-turn-helix domain |
| HTH_AraC | PF00165.18 | Bacterial regulatory helix-turn-helix proteins, AraC family |
| HTH_AsnC-type | PF13404.1 | AsnC-type helix-turn-helix domain |
| HTH_CodY | PF08222.6 | CodY helix-turn-helix domain |
| HTH_Crp_2 | PF13545.1 | Crp-like helix-turn-helix domain |
| HTH_DeoR | PF08220.7 | DeoR-like helix-turn-helix domain |
| HTH_IclR | PF09339.5 | IclR helix-turn-helix domain |
| HTH_Mga | PF08280.6 | M protein trans-acting positive regulator (MGA) HTH domain |
| HTH_OrfB_IS605 | PF12323.3 | Helix-turn-helix domain |
| HTH_psq | PF05225.11 | helix-turn-helix, Psq domain |
| HTH_Tnp_1 | PF01527.15 | Transposase |
| HTH_Tnp_1_2 | PF13022.1 | Helix-turn-helix of insertion element transposase |
| HTH_Tnp_4 | PF13613.1 | Helix-turn-helix of DDE superfamily endonuclease |
| HTH_Tnp_IS1 | PF12759.2 | InsA C-terminal domain |
| HTH_Tnp_IS630 | PF01710.11 | Transposase |
| HTH_Tnp_ISL3 | PF13542.1 | Helix-turn-helix domain of transposase family ISL3 |
| HTH_Tnp_Mu_1 | PF02316.11 | Mu DNA-binding domain |
| HTH_Tnp_Mu_2 | PF09039.6 | Mu DNA binding, I gamma subdomain |
| HTH_Tnp_Tc3_1 | PF11427.3 | Tc3 transposase |
| HTH_Tnp_Tc3_2 | PF01498.13 | Transposase |
| HTH_Tnp_Tc5 | PF03221.11 | Tc5 transposase DNA-binding domain |
| HTH_WhiA | PF02650.9 | WhiA C-terminal HTH domain |
| HtrL_YibB | PF09612.5 | Bacterial protein of unknown function (HtrL_YibB) |
| HTS | PF04204.11 | Homoserine O-succinyltransferase |
| HU-DNA_bdg | PF14848.1 | DNA-binding domain |
| Humanin | PF15040.1 | Humanin family |
| Hum_adeno_E3A | PF05393.6 | Human adenovirus early E3A glycoprotein |
| HUN | PF08729.5 | HPC2 and ubinuclein domain |
| HupE_UreJ | PF04955.7 | HupE / UreJ protein |
| HupE_UreJ_2 | PF13795.1 | HupE / UreJ protein |
| HupF_HypC | PF01455.13 | HupF/HypC family |
| HupH_C | PF04809.8 | HupH hydrogenase expression protein, C-terminal conserved region |
| Hus1 | PF04005.7 | Hus1-like protein |
| HutD | PF05962.6 | HutD |
| HutP | PF09021.6 | HutP |
| HVSL | PF09749.4 | Uncharacterised conserved protein |
| HWE_HK | PF07536.9 | HWE histidine kinase |
| HxlR | PF01638.12 | HxlR-like helix-turn-helix |
| HXXEE | PF13787.1 | Protein of unknown function with HXXEE motif |
| HxxPF_rpt | PF13745.1 | HxxPF-repeated domain |
| HXXSHH | PF07586.6 | Protein of unknown function (DUF1552) |
| HyaE | PF07449.6 | Hydrogenase-1 expression protein HyaE |
| Hyaluronidase_1 | PF07212.6 | Hyaluronidase protein (HylP) |
| HycA_repressor | PF11046.3 | Transcriptional repressor of hyc and hyp operons |
| Hyccin | PF09790.4 | Hyccin |
| HycH | PF07450.6 | Formate hydrogenlyase maturation protein HycH |
| HycI | PF01750.13 | Hydrogenase maturation protease |
| Hydantoinase_A | PF01968.13 | Hydantoinase/oxoprolinase |
| Hydantoinase_B | PF02538.9 | Hydantoinase B/oxoprolinase |
| Hydant_A_N | PF05378.8 | Hydantoinase/oxoprolinase N-terminal region |
| Hydrolase | PF00702.21 | haloacid dehalogenase-like hydrolase |
| Hydrolase_2 | PF07486.7 | Cell Wall Hydrolase |
| Hydrolase_3 | PF08282.7 | haloacid dehalogenase-like hydrolase |
| Hydrolase_4 | PF12146.3 | Putative lysophospholipase |
| Hydrolase_6 | PF13344.1 | Haloacid dehalogenase-like hydrolase |
| Hydrolase_like | PF13242.1 | HAD-hyrolase-like |
| Hydrolase_like2 | PF13246.1 | Putative hydrolase of sodium-potassium ATPase alpha subunit |
| Hydrophobin | PF01185.13 | Fungal hydrophobin |
| Hydrophobin_2 | PF06766.6 | Fungal hydrophobin |
| Hydrophob_seed | PF14547.1 | Hydrophobic seed protein |
| Hyd_WA | PF06462.7 | Propeller |
| HYLS1_C | PF15311.1 | Hydrolethalus syndrome protein 1 C-terminus |
| HypA | PF01155.14 | Hydrogenase expression/synthesis hypA family |
| HypD | PF01924.11 | Hydrogenase formation hypA family |
| Hyphal_reg_CWP | PF11765.3 | Hyphally regulated cell wall protein N-terminal |
| Hypoth_Ymh | PF09509.5 | Protein of unknown function (Hypoth_ymh) |
| HYR | PF02494.11 | HYR domain |
| H_kinase_N | PF12282.3 | Signal transduction histidine kinase |
| H_lectin | PF09458.5 | H-type lectin domain |
| H_PPase | PF03030.11 | Inorganic H+ pyrophosphatase |
| hDGE_amylase | PF14701.1 | glucanotransferase domain of human glycogen debranching enzyme |
| hEGF | PF12661.2 | Human growth factor-like EGF |
| hemP | PF10636.4 | Hemin uptake protein hemP |
| hGDE_central | PF14702.1 | central domain of human glycogen debranching enzyme |
| hGDE_N | PF14699.1 | N-terminal domain from the human glycogen debranching enzyme |
| hNIFK_binding | PF12196.3 | FHA Ki67 binding domain of hNIFK |
| hSac2 | PF12456.3 | Inositol phosphatase |
| hSH3 | PF14603.1 | Helically-extended SH3 domain |