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Numbers A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
AccessionPfam codeDescription
PF07679I-setImmunoglobulin I-set domain
PF06776IalBInvasion associated locus B (IalB) protein
PF04568IATPMitochondrial ATPase inhibitor, IATP
PF01749IBBImportin beta binding domain
PF10416IBDTranscription-initiator DNA-binding domain IBD
PF03810IBN_NImportin-beta N-terminal domain
PF11422IBP39Initiator binding protein 39 kDa
PF01485IBRIBR domain
PF13956Ibs_toxinToxin Ibs, type I toxin-antitoxin system
PF03617IBV_3AIBV 3A protein
PF03622IBV_3BIBV 3B protein
PF03620IBV_3CIBV 3C protein
PF04629ICA69Islet cell autoantigen ICA69, C-terminal domain
PF03921ICAM_NIntercellular adhesion molecule (ICAM), N-terminal domain
PF10480ICAP-1_inte_bdgBeta-1 integrin binding protein
PF06384ICATBeta-catenin-interacting protein ICAT
PF08426ICE2ICE2
PF05315ICEAICEA Protein
PF05862IceA2Helicobacter pylori IceA2 protein
PF00818Ice_nucleationIce nucleation protein repeat
PF00463ICLIsocitrate lyase family
PF01614IclRBacterial transcriptional regulator
PF06761IcmF-relatedIntracellular multiplication and human macrophage-killing
PF11393IcmLMacrophage killing protein with similarity to conjugation protein
PF04140ICMTIsoprenylcysteine carboxyl methyltransferase (ICMT) family
PF08858IDEALIDEAL domain
PF03971IDHMonomeric isocitrate dehydrogenase
PF01231IDOIndoleamine 2,3-dioxygenase
PF05760IERImmediate early response protein (IER)
PF11987IF-2Translation-initiation factor 2
PF01008IF-2BInitiation factor 2 subunit family
PF08364IF2_assocBacterial translation initiation factor IF-2 associated region
PF04760IF2_NTranslation initiation factor IF-2, N-terminal region
PF00707IF3_CTranslation initiation factor IF-3, C-terminal domain
PF05198IF3_NTranslation initiation factor IF-3, N-terminal domain
PF01652IF4EEukaryotic initiation factor 4E
PF06140Ifi-6-16Interferon-induced 6-16 family
PF00714IFN-gammaInterferon gamma
PF07140IFNGR1Interferon gamma receptor (IFNGR1)
PF07334IFP_35_NInterferon-induced 35 kDa protein (IFP 35) N-terminus
PF14754IFR3_antagPapain-like auto-proteinase
PF05004IFRDInterferon-related developmental regulator (IFRD)
PF04836IFRD_CInterferon-related protein conserved region
PF14931IFT20Intraflagellar transport complex B, subunit 20
PF15305IFT43Intraflagellar transport protein 43
PF12317IFT46_B_CIntraflagellar transport complex B protein 46 C terminal
PF10498IFT57Intra-flagellar transport protein 57
PF00047igImmunoglobulin domain
PF07095IgaAIntracellular growth attenuator protein IgaA
PF08365IGF2_CInsulin-like growth factor II E-peptide
PF00219IGFBPInsulin-like growth factor binding protein
PF14653IGFLInsulin growth factor-like family
PF01378IgG_binding_BB domain
PF11550IglCIntracellular growth locus C protein
PF00475IGPDImidazoleglycerol-phosphate dehydratase
PF00218IGPSIndole-3-glycerol phosphate synthase
PF09597IGRIGR protein motif
PF13895Ig_2Immunoglobulin domain
PF13927Ig_3Immunoglobulin domain
PF15097Ig_J_chainImmunoglobulin J chain
PF10430Ig_Tie2_1Tie-2 Ig-like domain 1
PF05049IIGPInterferon-inducible GTPase (IIGP)
PF04762IKI3IKI3 family
PF12179IKKbetaNEMObindI-kappa-kinase-beta NEMO binding domain
PF00340IL1Interleukin-1 / 18
PF00726IL10Interleukin 10
PF07400IL11Interleukin 11
PF03039IL12Interleukin-12 alpha subunit
PF10420IL12p40_CCytokine interleukin-12p40 C-terminus
PF03487IL13Interleukin-13
PF02372IL15Interleukin 15
PF06083IL17Interleukin-17
PF15037IL17_R_NInterleukin-17 receptor extracellular region
PF02394IL1_propepInterleukin-1 propeptide
PF00715IL2Interleukin 2
PF14565IL22Interleukin 22 IL-10-related T-cell-derived-inducible factor
PF15177IL28AInterleukin-28A
PF02059IL3Interleukin-3
PF15209IL31Interleukin 31
PF15225IL32Interleukin 32
PF15095IL33Interleukin 33
PF15036IL34Interleukin 34
PF00727IL4Interleukin 4
PF09238IL4Ra_NInterleukin-4 receptor alpha chain, N-terminal
PF02025IL5Interleukin 5
PF00489IL6Interleukin-6/G-CSF/MGF family
PF09240IL6Ra-bindInterleukin-6 receptor alpha chain, binding
PF01415IL7Interleukin 7/9 family
PF00048IL8Small cytokines (intecrine/chemokine), interleukin-8 like
PF01787Ilar_coatIlarvirus coat protein
PF10311Ilm1Increased loss of mitochondrial DNA protein 1
PF08049IlvB_leaderIlvB leader peptide
PF01450IlvCAcetohydroxy acid isomeroreductase, catalytic domain
PF00920ILVD_EDDDehydratase family
PF08046IlvGEDA_leaderIlvGEDA operon leader peptide
PF07991IlvNAcetohydroxy acid isomeroreductase, catalytic domain
PF09779Ima1_NIma1 N-terminal domain
PF14331ImcF-related_NImcF-related N-terminal domain
PF12314IMCpInner membrane complex protein
PF08397IMDIRSp53/MIM homology domain
PF05046Img2Mitochondrial large subunit ribosomal protein (Img2)
PF15655Imm-NTF2NTF2 fold immunity protein
PF15631Imm-NTF2-2NTF2 fold immunity protein
PF14430Imm1Immunity protein Imm1
PF15562Imm10Immunity protein 10
PF15563Imm11Immunity protein 11
PF15589Imm12Immunity protein 12
PF15564Imm13Immunity protein 13
PF15428Imm14Immunity protein 14
PF15590Imm15Immunity protein 15
PF15565Imm16Immunity protein 16
PF15591Imm17Immunity protein 17
PF15566Imm18Immunity protein 18
PF15567Imm19Immunity protein 19
PF14426Imm2Immunity protein Imm2
PF15568Imm20Immunity protein 20
PF15569Imm21Immunity protein 21
PF15592Imm22Immunity protein 22
PF15593Imm23Immunity protein 23
PF15570Imm24Immunity protein 24
PF15571Imm25Immunity protein 25
PF15572Imm26Immunity protein 26
PF15573Imm27Immunity protein 27
PF15574Imm28Immunity protein 28
PF15575Imm29Immunity protein 29
PF14425Imm3Immunity protein Imm3
PF15594Imm30Immunity protein 30
PF15595Imm31Immunity protein 31
PF15579Imm32Immunity protein 32
PF15580Imm33Immunity protein 33
PF15596Imm34Immunity protein 34
PF15581Imm35Immunity protein 35
PF15597Imm36Immunity protein 36
PF15598Imm37Immunity protein 37
PF15599Imm38Immunity protein 38
PF15600Imm39Immunity protein 39
PF15582Imm40Immunity protein 40
PF15583Imm41Immunity protein 41
PF15601Imm42Immunity protein 42
PF15602Imm43Immunity protein 43
PF15584Imm44Immunity protein 44
PF15603Imm45Immunity protein 45
PF15585Imm46Immunity protein 46
PF15586Imm47Immunity protein 47
PF15587Imm48Immunity protein 48
PF15660Imm49Immunity protein 49
PF14423Imm5Immunity protein Imm5
PF14434Imm6Immunity protein Imm6
PF15588Imm7Immunity protein 7
PF15560Imm8Immunity protein 8
PF15561Imm9Immunity protein 9
PF11480ImmE5Colicin-E5 Imm protein
PF14373Imm_superinfectSuperinfection immunity protein
PF10688Imp-YgjVBacterial inner membrane protein
PF06812ImpA-rel_NImpA-related N-terminal
PF00478IMPDHIMP dehydrogenase / GMP reductase domain
PF07024ImpEImpE protein
PF07826IMP_cyclohydIMP cyclohydrolase-like protein
PF00817IMSimpB/mucB/samB family
PF11799IMS_CimpB/mucB/samB family C-terminal domain
PF11798IMS_HHHIMS family HHH motif
PF15018InaF-motifTRP-interacting helix
PF04156IncAIncA protein
PF15142INCA1INCA1
PF03941INCENP_ARK-bindInner centromere protein, ARK binding region
PF12178INCENP_NChromosome passenger complex (CPC) protein INCENP N terminal
PF02387IncFII_repAIncFII RepA protein family
PF04227Indigoidine_AIndigoidine synthase A like protein
PF12998INGInhibitor of growth proteins N-terminal histone-binding
PF02974InhProtease inhibitor Inh
PF11417Inhibitor_G39PLoader and inhibitor of phage G40P
PF12559Inhibitor_I10Serine endopeptidase inhibitors
PF10465Inhibitor_I24PinA peptidase inhibitor
PF08246Inhibitor_I29Cathepsin propeptide inhibitor domain (I29)
PF10466Inhibitor_I34Saccharopepsin inhibitor I34
PF03995Inhibitor_I36Peptidase inhibitor family I36
PF09394Inhibitor_I42Chagasin family peptidase inhibitor I42
PF10467Inhibitor_I48Peptidase inhibitor clitocypin
PF11714Inhibitor_I53Thrombin inhibitor Madanin
PF11405Inhibitor_I67Bromelain inhibitor VI
PF10468Inhibitor_I68Carboxypeptidase inhibitor I68
PF13734Inhibitor_I69Spi protease inhibitor
PF12628Inhibitor_I71Falstatin, cysteine peptidase inhibitor
PF11720Inhibitor_I78Peptidase inhibitor I78 family
PF05922Inhibitor_I9Peptidase inhibitor I9
PF11555Inhibitor_Mig-6EGFR receptor inhibitor Mig-6
PF04179Init_tRNA_PTInitiator tRNA phosphoribosyl transferase
PF12782Innate_immunInvertebrate innate immunity transcript family
PF00876InnexinInnexin
PF14612Ino80_Iec3IEC3 subunit of the Ino80 complex, chromatin re-modelling
PF08193INO80_Ies4INO80 complex subunit Ies4
PF01658Inos-1-P_synthMyo-inositol-1-phosphate synthase
PF00459Inositol_PInositol monophosphatase family
PF12634Inp1Inheritance of peroxisomes protein 1
PF05770Ins134_P3_kinInositol 1, 3, 4-trisphosphate 5/6-kinase
PF08709Ins145_P3_recInositol 1,4,5-trisphosphate/ryanodine receptor
PF07281INSIGInsulin-induced protein (INSIG)
PF00049InsulinInsulin/IGF/Relaxin family
PF06757Ins_allergen_rpInsect allergen related repeat, nitrile-specifier detoxification
PF03488Ins_betaNematode insulin-related peptide beta type
PF06090Ins_P5_2-kinInositol-pentakisphosphate 2-kinase
PF12835Integrase_1Integrase
PF14657Integrase_AP2AP2-like DNA-binding integrase domain
PF02920Integrase_DNADNA binding domain of tn916 integrase
PF02022Integrase_ZnIntegrase Zinc binding domain
PF00357Integrin_alphaIntegrin alpha cytoplasmic region
PF08441Integrin_alpha2Integrin alpha
PF00362Integrin_betaIntegrin, beta chain
PF08725Integrin_b_cytIntegrin beta cytoplasmic domain
PF07965Integrin_B_tailIntegrin beta tail domain
PF14890Intein_splicingIntein splicing domain
PF09294Interfer-bindInterferon-alpha/beta receptor, fibronectin type III
PF00143InterferonInterferon alpha/beta domain
PF12354Internalin_NBacterial adhesion/invasion protein N terminal
PF09529Intg_mem_TP0381Integral membrane protein (intg_mem_TP0381)
PF07979Intimin_CIntimin C-type lectin domain
PF01348Intron_maturas2Type II intron maturase
PF14750INTS2Integrator complex subunit 2
PF14838INTS5_CIntegrator complex subunit 5 C-terminus
PF14837INTS5_NIntegrator complex subunit 5 N-terminus
PF15300INT_SG_DDX_CT_CINTS6/SAGE1/DDX26B/CT45 C-terminus
PF09134Invasin_D3Invasin, domain 3
PF03519Invas_SpaKInvasion protein B family
PF04741InvHInvH outer membrane lipoprotein
PF00904InvolucrinInvolucrin repeat
PF06994Involucrin2Involucrin
PF10583Involucrin_NInvolucrin of squamous epithelia N-terminus
PF00552IN_DBD_CIntegrase DNA binding domain
PF00520Ion_transIon transport protein
PF07885Ion_trans_2Ion channel
PF08412Ion_trans_NIon transport protein N-terminal
PF03278IpaB_EvcAIpaB/EvcA family
PF09599IpaC_SipCSalmonella-Shigella invasin protein C (IpaC_SipC)
PF06511IpaDInvasion plasmid antigen IpaD
PF05925IpgDEnterobacterial virulence protein IpgD
PF06415iPGM_NBPG-independent PGAM N-terminus (iPGM_N)
PF12333Ipi1_NRix1 complex component involved in 60S ribosome maturation
PF11634IPI_T4Nuclease inhibitor from bacteriophage T4
PF03770IPKInositol polyphosphate kinase
PF04979IPP-2Protein phosphatase inhibitor 2 (IPP-2)
PF01715IPPTIPP transferase
PF01745IPTIsopentenyl transferase
PF02121IP_transPhosphatidylinositol transfer protein
PF00612IQIQ calmodulin-binding motif
PF15157IQ-likeIQ-like
PF12185IR1-MNup358/RanBP2 E3 ligase domain
PF00605IRFInterferon regulatory factor transcription factor
PF11261IRF-2BP1_2Interferon regulatory factor 2-binding protein zinc finger
PF10401IRF-3Interferon-regulatory factor 3
PF01007IRKInward rectifier potassium channel
PF08466IRK_NInward rectifier potassium channel N-terminal
PF04120Iron_permeaseLow affinity iron permease
PF04362Iron_trafficBacterial Fe(2+) trafficking
PF10634Iron_transportFe2+ transport protein
PF02174IRSPTB domain (IRS-1 type)
PF06215ISAV_HAInfectious salmon anaemia virus haemagglutinin
PF11727ISG65-75Invariant surface glycoprotein
PF10281Ish1Putative stress-responsive nuclear envelope protein
PF02060ISK_ChannelSlow voltage-gated potassium channel
PF06437ISN1IMP-specific 5'-nucleotidase
PF00857IsochorismataseIsochorismatase family
PF00180Iso_dhIsocitrate/isopropylmalate dehydrogenase
PF04279IspAIntracellular septation protein A
PF01128IspD2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase
PF03398Ist1Regulator of Vps4 activity in the MVB pathway
PF01695IstB_IS21IstB-like ATP binding protein
PF08483IstB_IS21_ATPIstB-like ATP binding N-terminal
PF06246Isy1Isy1-like splicing family
PF02189ITAMImmunoreceptor tyrosine-based activation motif
PF10538ITAM_Cys-richImmunoreceptor tyrosine-based activation motif
PF06668ITI_HC_CInter-alpha-trypsin inhibitor heavy chain C-terminus
PF04183IucA_IucCIucA / IucC family
PF01156IU_nuc_hydroInosine-uridine preferring nucleoside hydrolase
PF08816IvyInhibitor of vertebrate lysozyme (Ivy)
PF15005IZUMOIzumo sperm-egg fusion
PF01608I_LWEQI/LWEQ domain