Browse through the Pfam families on this page.

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L-fibroin PF05849.6 Fibroin light chain (L-fibroin)

L1R_F9L PF02442.12 Lipid membrane protein of large eukaryotic DNA viruses

L27 PF02828.11 L27 domain

L27_1 PF09058.5 L27_1

L27_2 PF09045.5 L27_2

L27_N PF09060.5 L27_N

L31 PF09784.4 Mitochondrial ribosomal protein L31

L51_S25_CI-B8 PF05047.11 Mitochondrial ribosomal protein L51 / S25 / CI-B8 domain

L6_membrane PF05805.7 L6 membrane protein

L71 PF02448.10 L71 family

La PF05383.12 La domain

LA-virus_coat PF09220.5 L-A virus, major coat protein

LAB_N PF07578.6 Lipid A Biosynthesis N-terminal domain

LacAB_rpiB PF02502.13 Ribose/Galactose Isomerase

LacI PF00356.16 Bacterial regulatory proteins, lacI family

Lact-deh-memb PF09330.6 D-lactate dehydrogenase, membrane binding

Lactamase_B PF00753.22 Metallo-beta-lactamase superfamily

Lactamase_B_2 PF12706.2 Beta-lactamase superfamily domain

Lactamase_B_3 PF13483.1 Beta-lactamase superfamily domain

Lactamase_B_4 PF13691.1 tRNase Z endonuclease

Lactamase_B_5 PF14597.1 Metallo-beta-lactamase superfamily

Lactate_perm PF02652.9 L-lactate permease

Lactococcin PF04369.8 Lactococcin-like family

Lactococcin_972 PF09683.5 Bacteriocin (Lactococcin_972)

Lactonase PF10282.4 Lactonase, 7-bladed beta-propeller

Lact_bio_phlase PF09508.5 Lacto-N-biose phosphorylase

LacY_symp PF01306.14 LacY proton/sugar symporter

Lac_bphage_repr PF06543.7 Lactococcus bacteriophage repressor

LAG1-DNAbind PF09271.6 LAG1, DNA binding

LAGLIDADG_1 PF00961.14 LAGLIDADG endonuclease

LAGLIDADG_2 PF03161.8 LAGLIDADG DNA endonuclease family

LAGLIDADG_3 PF14528.1 LAGLIDADG-like domain

LAGLIDADG_WhiA PF14527.1 WhiA LAGLIDADG-like domain

LamB PF02264.10 LamB porin

Lambda_Bor PF06291.6 Bor protein

Lambda_CIII PF02061.11 Lambda Phage CIII

Lambda_Kil PF06301.6 Bacteriophage lambda Kil protein

Lambda_tail_I PF06805.7 Bacteriophage lambda tail assembly protein I

LamB_YcsF PF03746.11 LamB/YcsF family

Laminin_B PF00052.13 Laminin B (Domain IV)

Laminin_EGF PF00053.19 Laminin EGF-like (Domains III and V)

Laminin_G_1 PF00054.18 Laminin G domain

Laminin_G_2 PF02210.19 Laminin G domain

Laminin_G_3 PF13385.1 Concanavalin A-like lectin/glucanases superfamily

Laminin_I PF06008.9 Laminin Domain I

Laminin_II PF06009.7 Laminin Domain II

Laminin_N PF00055.12 Laminin N-terminal (Domain VI)

Lamp PF01299.12 Lysosome-associated membrane glycoprotein (Lamp)

Lamprin PF06403.6 Lamprin

LAMTOR PF15454.1 Late endosomal/lysosomal adaptor and MAPK and MTOR activator

LAM_C PF12544.3 Lysine-2,3-aminomutase

LANC_like PF05147.8 Lanthionine synthetase C-like protein

Lantibiotic_a PF14867.1 Lantibiotic alpha

Lant_dehyd_C PF04738.8 Lantibiotic dehydratase, C terminus

Lant_dehyd_N PF04737.8 Lantibiotic dehydratase, N terminus

LAP1C PF05609.7 Lamina-associated polypeptide 1C (LAP1C)

LAP2alpha PF11560.3 Lamina-associated polypeptide 2 alpha

Laps PF10169.4 Learning-associated protein

Lar_restr_allev PF14354.1 Restriction alleviation protein Lar

Las1 PF04031.8 Las1-like

LAT PF15234.1 Linker for activation of T-cells

Latarcin PF10279.4 Latarcin precursor

Latexin PF06907.7 Latexin

Late_protein_L1 PF00500.13 L1 (late) protein

Late_protein_L2 PF00513.13 Late Protein L2

Latrophilin PF02354.11 Latrophilin Cytoplasmic C-terminal region

Latrotoxin_C PF15658.1 Latrotoxin C-terminal domain

Lbh PF15317.1 Cardiac transcription factor regulator, Developmental protein

LBP_BPI_CETP PF01273.20 LBP / BPI / CETP family, N-terminal domain

LBP_BPI_CETP_C PF02886.12 LBP / BPI / CETP family, C-terminal domain

LBR_tudor PF09465.5 Lamin-B receptor of TUDOR domain

LCAT PF02450.10 Lecithin:cholesterol acyltransferase

LCCL PF03815.14 LCCL domain

LCD1 PF09798.4 DNA damage checkpoint protein

LCE PF14672.1 Late cornified envelope

LCM PF04072.9 Leucine carboxyl methyltransferase

LcnG-beta PF11632.3 Lactococcin G-beta

LcrG PF07216.7 LcrG protein

LcrR PF09621.5 Type III secretion system regulator (LcrR)

LcrV PF04792.7 V antigen (LcrV) protein

LDB19 PF13002.2 Arrestin_N terminal like

Ldh_1_C PF02866.13 lactate/malate dehydrogenase, alpha/beta C-terminal domain

Ldh_1_N PF00056.18 lactate/malate dehydrogenase, NAD binding domain

Ldh_2 PF02615.9 Malate/L-lactate dehydrogenase

Ldl_recept_a PF00057.13 Low-density lipoprotein receptor domain class A

Ldl_recept_b PF00058.12 Low-density lipoprotein receptor repeat class B

LdpA_C PF12617.3 Iron-Sulfur binding protein C terminal

Ldr_toxin PF13940.1 Toxin Ldr, type I toxin-antitoxin system

Leader_CPA1 PF08252.6 arg-2/CPA1 leader peptide

Leader_Erm PF08253.6 Erm Leader peptide

Leader_Thr PF08254.6 Threonine leader peptide

Leader_Trp PF08255.6 Trp-operon Leader Peptide

LEAP-2 PF07359.6 Liver-expressed antimicrobial peptide 2 precursor (LEAP-2)

LEA_1 PF03760.10 Late embryogenesis abundant (LEA) group 1

LEA_2 PF03168.8 Late embryogenesis abundant protein

LEA_3 PF03242.8 Late embryogenesis abundant protein

LEA_4 PF02987.11 Late embryogenesis abundant protein

LEA_5 PF00477.12 Small hydrophilic plant seed protein

LEA_6 PF10714.4 Late embryogenesis abundant protein 18

Lebercilin PF15619.1 Ciliary protein causing Leber congenital amaurosis disease

Lectin_C PF00059.16 Lectin C-type domain

Lectin_leg-like PF03388.8 Legume-like lectin family

Lectin_legB PF00139.14 Legume lectin domain

Lectin_N PF03954.9 Hepatic lectin, N-terminal domain

LEDGF PF11467.3 Lens epithelium-derived growth factor (LEDGF)

LEF-4 PF05098.7 Late expression factor 4 (LEF-4)

LEF-8 PF04941.7 Late expression factor 8 (LEF-8)

LEF-9 PF05094.7 Late expression factor 9 (LEF-9)

Legionella_OMP PF05150.7 Legionella pneumophila major outer membrane protein precursor

LEH PF07858.7 Limonene-1,2-epoxide hydrolase catalytic domain

LELP1 PF15042.1 Late cornified envelope-like proline-rich protein 1

LEM PF03020.10 LEM domain

LemA PF04011.7 LemA family

Lem_TRP PF08262.6 Leucophaea maderae tachykinin-related peptide

Lentiviral_Tat PF02998.9 Lentiviral Tat protein

Lentivirus_VIF PF05851.6 Lentivirus virion infectivity factor (VIF)

Lenti_VIF_2 PF07401.7 Bovine Lentivirus VIF protein

Leo1 PF04004.8 Leo1-like protein

LEP503 PF15221.1 Lens epithelial cell protein LEP503

LepA_C PF06421.7 GTP-binding protein LepA C-terminus

Leptin PF02024.10 Leptin

Lep_receptor_Ig PF06328.6 Ig-like C2-type domain

LETM1 PF07766.8 LETM1-like protein

LeuA_dimer PF08502.5 LeuA allosteric (dimerisation) domain

Leucyl-specific PF14795.1 Leucine-tRNA synthetase-specific domain

Leuk-A4-hydro_C PF09127.6 Leukotriene A4 hydrolase, C-terminal

Leukemia_assc_2 PF15197.1 Leukemia-associated protein 2

Leukocidin PF07968.7 Leukocidin/Hemolysin toxin family

Leu_leader PF08054.6 Leucine operon leader peptide

Leu_Phe_trans PF03588.9 Leucyl/phenylalanyl-tRNA protein transferase

Leu_zip PF15294.1 Leucine zipper

Levi_coat PF01819.12 Levivirus coat protein

LexA_DNA_bind PF01726.11 LexA DNA binding domain

Lge1 PF11488.3 Transcriptional regulatory protein LGE1

LGFP PF08310.6 LGFP repeat

Lgl_C PF08596.5 Lethal giant larvae(Lgl) like, C-terminal

LGT PF01790.13 Prolipoprotein diacylglyceryl transferase

LHC PF00556.15 Antenna complex alpha/beta subunit

LHH PF14411.1 A nuclease of the HNH/ENDO VII superfamily with conserved LHH

LicD PF04991.8 LicD family

LIF_OSM PF01291.12 LIF / OSM family

LigA PF07746.6 Aromatic-ring-opening dioxygenase LigAB, LigA subunit

Ligase_CoA PF00549.14 CoA-ligase

LigB PF02900.13 Catalytic LigB subunit of aromatic ring-opening dioxygenase

LigD_N PF13298.1 DNA polymerase Ligase (LigD)

LigT_PEase PF02834.11 LigT like Phosphoesterase

Lig_chan PF00060.21 Ligand-gated ion channel

Lig_chan-Glu_bd PF10613.4 Ligated ion channel L-glutamate- and glycine-binding site

LIM PF00412.17 LIM domain

LIME1 PF15332.1 Lck-interacting transmembrane adapter 1

Limkain-b1 PF11608.3 Limkain b1

LIM_bind PF01803.11 LIM-domain binding protein

Lin-8 PF03353.10 Ras-mediated vulval-induction antagonist

Lin0512_fam PF09585.5 Conserved hypothetical protein (Lin0512_fam)

LIN37 PF15306.1 LIN37

LINES_C PF14695.1 Lines C-terminus

LINES_N PF14694.1 Lines N-terminus

Linker_histone PF00538.14 linker histone H1 and H5 family

Linocin_M18 PF04454.7 Encapsulating protein for peroxidase

LIP PF03583.9 Secretory lipase

Lipase PF00151.14 Lipase

Lipase3_N PF03893.11 Lipase 3 N-terminal region

Lipase_2 PF01674.13 Lipase (class 2)

Lipase_3 PF01764.20 Lipase (class 3)

Lipase_bact_N PF12262.3 Bacterial virulence factor lipase N-terminal

Lipase_chap PF03280.9 Proteobacterial lipase chaperone protein

Lipase_GDSL PF00657.17 GDSL-like Lipase/Acylhydrolase

Lipase_GDSL_2 PF13472.1 GDSL-like Lipase/Acylhydrolase family

Lipase_GDSL_3 PF14606.1 GDSL-like Lipase/Acylhydrolase family

Lipid_bd PF12888.2 Lipid-binding putative hydrolase

Lipid_DES PF08557.5 Sphingolipid Delta4-desaturase (DES)

Lipin_N PF04571.9 lipin, N-terminal conserved region

Lipl32 PF12103.3 Surface lipoprotein of Spirochaetales order

Lipocalin PF00061.18 Lipocalin / cytosolic fatty-acid binding protein family

Lipocalin_2 PF08212.7 Lipocalin-like domain

Lipocalin_3 PF12702.2 Lipocalin-like

Lipocalin_4 PF13648.1 Lipocalin-like domain

Lipocalin_5 PF13924.1 Lipocalin-like domain

Lipocalin_6 PF13944.1 Lipocalin-like domain

Lipocalin_7 PF14651.1 Lipocalin / cytosolic fatty-acid binding protein family

Lipoprotein_1 PF00820.14 Borrelia lipoprotein

Lipoprotein_10 PF03202.8 Putative mycoplasma lipoprotein, C-terminal region

Lipoprotein_11 PF03260.8 Lepidopteran low molecular weight (30 kD) lipoprotein

Lipoprotein_15 PF03640.10 Secreted repeat of unknown function

Lipoprotein_16 PF03923.8 Uncharacterized lipoprotein

Lipoprotein_17 PF04200.7 Lipoprotein associated domain

Lipoprotein_18 PF06804.6 NlpB/DapX lipoprotein

Lipoprotein_19 PF13617.1 YnbE-like lipoprotein

Lipoprotein_2 PF00921.12 Borrelia lipoprotein

Lipoprotein_20 PF13942.1 YfhG lipoprotein

Lipoprotein_21 PF14041.1 LppP/LprE lipoprotein

Lipoprotein_3 PF00938.12 Lipoprotein

Lipoprotein_5 PF01298.13 Transferrin binding protein-like solute binding protein

Lipoprotein_6 PF01441.14 Lipoprotein

Lipoprotein_7 PF01540.11 Adhesin lipoprotein

Lipoprotein_8 PF02030.10 Hypothetical lipoprotein (MG045 family)

Lipoprotein_9 PF03180.9 NLPA lipoprotein

Lipoprotein_Ltp PF07553.6 Host cell surface-exposed lipoprotein

Lipoprotein_X PF03305.8 Mycoplasma MG185/MG260 protein

Lipoprot_C PF08794.5 Lipoprotein GNA1870 C terminal like

Lipoxygenase PF00305.14 Lipoxygenase

Lip_A_acyltrans PF03279.8 Bacterial lipid A biosynthesis acyltransferase

Lip_prot_lig_C PF10437.4 Bacterial lipoate protein ligase C-terminus

Lir1 PF07207.6 Light regulated protein Lir1

LisH PF08513.6 LisH

LIX1 PF14954.1 Limb expression 1

LKAAEAR PF15478.1 Family of unknown function with LKAAEAR motif

LktC PF06261.6 Actinobacillus actinomycetemcomitans leukotoxin activator LktC

LLC1 PF14945.1 Normal lung function maintenance, Low in Lung Cancer 1 protein

LLGL PF08366.8 LLGL2

LMBR1 PF04791.11 LMBR1-like membrane protein

LMF1 PF06762.9 Lipase maturation factor

LmjF365940-deam PF14421.1 A distinct subfamily of CDD/CDA-like deaminases

LMP PF04778.7 LMP repeated region

LMSTEN PF07988.7 LMSTEN motif

LMWPc PF01451.16 Low molecular weight phosphotyrosine protein phosphatase

LMWSLP_N PF12211.3 Low molecular weight S layer protein N terminal

LNP1 PF15419.1 Leukemia NUP98 fusion partner 1

LNS2 PF08235.8 LNS2 (Lipin/Ned1/Smp2)

LOH1CR12 PF10158.4 Tumour suppressor protein

LolA PF03548.10 Outer membrane lipoprotein carrier protein LolA

LolB PF03550.9 Outer membrane lipoprotein LolB

LON PF02190.11 ATP-dependent protease La (LON) domain

Longin PF13774.1 Regulated-SNARE-like domain

Lon_2 PF13337.1 Putative ATP-dependent Lon protease

Lon_C PF05362.8 Lon protease (S16) C-terminal proteolytic domain

LPAM_1 PF08139.7 Prokaryotic membrane lipoprotein lipid attachment site

LPAM_2 PF13627.1 Prokaryotic lipoprotein-attachment site

LPP PF04728.8 Lipoprotein leucine-zipper

Lpp-LpqN PF10738.4 Probable lipoprotein LpqN

LPP20 PF02169.11 LPP20 lipoprotein

LppC PF04348.8 LppC putative lipoprotein

LptC PF06835.8 Lipopolysaccharide-assembly, LptC-related

LptE PF04390.7 Lipopolysaccharide-assembly

LpxB PF02684.10 Lipid-A-disaccharide synthetase

LpxC PF03331.8 UDP-3-O-acyl N-acetylglycosamine deacetylase

LpxD PF04613.9 UDP-3-O-[3-hydroxymyristoyl] glucosamine N-acyltransferase, LpxD

LpxK PF02606.9 Tetraacyldisaccharide-1-P 4'-kinase

LRAT PF04970.8 Lecithin retinol acyltransferase

LrgA PF03788.9 LrgA family

LrgB PF04172.11 LrgB-like family

LRR19-TM PF15176.1 Leucine-rich repeat family 19 TM domain

LRRC37AB_C PF14914.1 LRRC37A/B like protein 1 C-terminal domain

LRRCT PF01463.19 Leucine rich repeat C-terminal domain

LRRNT PF01462.13 Leucine rich repeat N-terminal domain

LRRNT_2 PF08263.7 Leucine rich repeat N-terminal domain

LRR_1 PF00560.28 Leucine Rich Repeat

LRR_2 PF07723.8 Leucine Rich Repeat

LRR_3 PF07725.7 Leucine Rich Repeat

LRR_4 PF12799.2 Leucine Rich repeats (2 copies)

LRR_5 PF13306.1 Leucine rich repeats (6 copies)

LRR_6 PF13516.1 Leucine Rich repeat

LRR_7 PF13504.1 Leucine rich repeat

LRR_8 PF13855.1 Leucine rich repeat

LRR_9 PF14580.1 Leucine-rich repeat

LRR_adjacent PF08191.6 LRR adjacent

LRS4 PF10422.4 Monopolin complex subunit LRS4

LRV PF01816.12 Leucine rich repeat variant

LRV_FeS PF05484.6 LRV protein FeS4 cluster

LSM PF01423.17 LSM domain

LSM14 PF12701.2 Scd6-like Sm domain

LsmAD PF06741.8 LsmAD domain

Lsm_C PF14894.1 Lsm C-terminal

Lsm_interact PF05391.6 Lsm interaction motif

LSPR PF06049.7 Coagulation Factor V LSPD Repeat

LSR PF05624.9 Lipolysis stimulated receptor (LSR)

Lsr2 PF11774.3 Lsr2

LssY_C PF14067.1 LssY C-terminus

LST1 PF05083.8 LST-1 protein

LT-IIB PF06453.6 Type II heat-labile enterotoxin , B subunit (LT-IIB)

LTD PF00932.14 Lamin Tail Domain

LTP_2 PF14368.1 Probable lipid transfer

LtrA PF06772.6 Bacterial low temperature requirement A protein (LtrA)

LTV PF04180.9 Low temperature viability protein

LTXXQ PF07813.7 LTXXQ motif family protein

LUC7 PF03194.10 LUC7 N_terminus

Luciferase_3H PF10284.4 Luciferase helical bundle domain

Luciferase_cat PF10285.4 Luciferase catalytic domain

Luciferase_N PF05295.6 Luciferase/LBP N-terminal domain

Lumazine_bd PF12870.2 Lumazine-binding domain

Lumazine_bd_2 PF12893.2 Putative lumazine-binding

Lum_binding PF00677.12 Lumazine binding domain

Lung_7-TM_R PF06814.8 Lung seven transmembrane receptor

LURAP PF14854.1 Leucine rich adaptor protein

Lustrin_cystein PF14625.1 Lustrin, cysteine-rich repeated domain

Luteo_coat PF00894.13 Luteovirus coat protein

Luteo_P1-P2 PF08467.5 Luteovirus RNA polymerase P1-P2/replicase

Luteo_PO PF04662.8 Luteovirus P0 protein

Luteo_Vpg PF01659.11 Luteovirus putative VPg genome linked protein

LuxC PF05893.9 Acyl-CoA reductase (LuxC)

LuxE PF04443.7 Acyl-protein synthetase, LuxE

LuxQ-periplasm PF09308.5 LuxQ, periplasmic

LuxS PF02664.10 S-Ribosylhomocysteinase (LuxS)

LVIVD PF08309.6 LVIVD repeat

LXG PF04740.7 LXG domain of WXG superfamily

Ly-6_related PF06579.7 Caenorhabditis elegans ly-6-related protein

Ly49 PF08391.5 Ly49-like protein, N-terminal region

Lyase_1 PF00206.15 Lyase

Lyase_8 PF02278.13 Polysaccharide lyase family 8, super-sandwich domain

Lyase_8_C PF02884.12 Polysaccharide lyase family 8, C-terminal beta-sandwich domain

Lyase_8_N PF08124.6 Polysaccharide lyase family 8, N terminal alpha-helical domain

Lyase_aromatic PF00221.14 Aromatic amino acid lyase

Lyase_catalyt PF09093.6 Lyase, catalytic

Lyase_N PF09092.6 Lyase, N terminal

Lycopene_cycl PF05834.7 Lycopene cyclase protein

Lys PF00062.15 C-type lysozyme/alpha-lactalbumin family

Lys-AminoMut_A PF09043.6 D-Lysine 5,6-aminomutase alpha subunit

LysE PF01810.13 LysE type translocator

Lysine_decarbox PF03641.9 Possible lysine decarboxylase

Lysis_col PF02402.11 Lysis protein

Lysis_S PF04971.7 Lysis protein S

LysM PF01476.15 LysM domain

Lysozyme_like PF13702.1 Lysozyme-like

LysR_substrate PF03466.15 LysR substrate binding domain

Lysyl_oxidase PF01186.12 Lysyl oxidase

LYTB PF02401.13 LytB protein

LytR_C PF13399.1 LytR cell envelope-related transcriptional attenuator

LytR_cpsA_psr PF03816.9 Cell envelope-related transcriptional attenuator domain

LytTR PF04397.10 LytTr DNA-binding domain

Lzipper-MIP1 PF14389.1 Leucine-zipper of ternary complex factor MIP1

LZ_Tnp_IS481 PF13011.1 leucine-zipper of insertion element IS481

LZ_Tnp_IS66 PF13007.2 Transposase C of IS166 homeodomain

L_biotic_typeA PF04604.8 Type-A lantibiotic

L_HGMIC_fpl PF10242.4 Lipoma HMGIC fusion partner-like protein

L_lactis_ph-MCP PF06673.6 Lactococcus lactis bacteriophage major capsid protein

L_lactis_RepB_C PF06430.7 Lactococcus lactis RepB C-terminus

L_lac_phage_MSP PF06488.6 Lactococcus lactis bacteriophage major structural protein

L_protein_N PF15518.1 L protein N-terminus

lci PF12197.3 Bacillus cereus group antimicrobial protein