There are 1148 domains in the SMART database.

Signalling
14_3_3 4.1m acidPPc ADF ANK ARF ArfGap ARM
B41 B561 B_lectin BAG BH4 BIR BTK C1
C2 Calx_beta CARD CASc CH CheW CNH cNMP
CULLIN CYCc Cyt-b5 DAGKa DAGKc DAX DEATH DED
DEP DSPc DYNc EAL EFh EH ENTH FBOX
FCH FF FH2 FHA FIST FYVE G_alpha GAF
GAS2 GED GGDEF GGL GoLoco GRAM GS GuKc
HAMP HATPase_c HECTc HisKA HPT Hr1 ILWEQ IPPc
IQ ITAM KISc L27 LIM LMWPc MA MeTrc
MIR MYSc MyTH4 PAC PAS PASTA PBD PDZ
PH PI3K_C2 PI3K_p85B PI3K_rbd PI3Ka PI3Kc PIPKc PLAc
PLCXc PLCYc PLDc PP2Ac PP2Cc PTB PTBI PTPc
PTPc_DSPc PTPc_motif PX PXA RA RAB RAN RanBD
RAS RasGAP RasGEF RasGEFN RBD REC RGS RHO
RHOD RhoGAP RhoGEF RIIa RING RIO S_TK_X S_TKc
SAM SAR SEC14 Sec7 SH2 SH3 small_GTPase SOCS
SPEC SPRY START STAT_int STYKc t_SNARE TarH TBC
TIR TRASH TyrKc UBA UBCc UBQ UBX VHP
VHS VPS9 WD40 WH1 WH2 WW ZnF_A20 ZnF_AN1
ZnF_RBZ ZnF_UBP ZnF_ZZ ZU5
Nuclear
35EXOc 53EXOc A1pp ADEAMc AlkA_N ANTAR AP2 AP2Ec
APC2 AraC_E_bind ARID AT_hook AWS AXH B3 BAF
BAH BASIC BBC BBOX BCL BEN BHD_1 BHD_2
BHD_3 BING4CT BOP1NT BP28CT BRCT BRIGHT BRK BRLZ
Bro-N BROMO Brr6_like_C_C BSD BTP C1_4 CarD_TRCF CAT_RBD
CBF Cdc6_C CDT1 CENPB CG-1 CHK CHROMO Cir_N
CKS Copper-fist CPDc CPSF73-100_C CRM1_C CSP CTD Cu_FIST
CUT D5_N DDE_Tnp_IS1595 DDT DEXDc DM DMAP_binding DP
DSHCT DSRM DSX_dimer DUF1087 DUF1693 DUF1744 DUF4210 DUF4217
DWA DWB DZF eIF5C ELK ELM2 Elp3 ENDO3c
Endonuclease_NS ERCC4 ETS EXOIII Fapy_DNA_glyco FBD FCD FES
FH Fmp27_GFWDK Fmp27_SW Fmp27_WPPW Ftsk_gamma Fungal_trans FYRC FYRN
G_patch GAGA_bind GIYc H15 H2A H2B H2TH H3
H4 HALZ HDAC_interact HELICc HhH1 HhH2 HLH HMG
HMG17 HNHc HNS HOLI HOX HRDC HSA HSF
HTH_ARAC HTH_ARSR HTH_ASNC HTH_CRP HTH_DEOR HTH_DTXR HTH_GNTR HTH_ICLR
HTH_LACI HTH_LUXR HTH_MARR HTH_MERR HTH_XRE IBN_N IENR1 IENR2
IPT IRF IRO JmjC JmjN KASH KAT11 KH
KOW KRAB Ku78 LEM LIGANc LNS2 LytTR MA3
MADF MADS MBD MBT MCM MutH MutL_C MUTSac
MUTSd NEUZ NGN NOSIC NurA ORANGE ParB PAX
PAZ PHD Piwi Plus3 POL3Bc POLAc POLBc POLIIIAc
POLXc POP4 PostSET POU POX PRE_C2HC PreSET PriCT_1
Prim-Pol PRY PSP PUA PUG PUR Resolvase Rho_N
RIBOc RPOL4c RPOL8c RPOL9 RPOLA_N RPOLCX RPOLD RPR
RQC RRM RWD S4 SAND SANT SAP SCAN
SET SFM Skp1 Sm SMC_hinge SMR SPK SpoVT_AbrB
SPT2 SRA STE TAF TBOX TDU TEA Telo_bind
Telomerase_RBD TFIIE TFS2M TFS2N THAP TIFY TOP1Ac TOP1Bc
TOP2c TOP4c TOPEUc TOPRIM Trans_reg_C TRCF Ubox UDG
UME UTRA XPGI XPGN YccV-like YL1_C YqgFc Zalpha
zf-AD ZnF_BED ZnF_C2C2 ZnF_C2H2 ZnF_C2HC ZnF_C3H1 ZnF_C4 ZnF_CHCC
ZnF_DBF ZnF_GATA ZnF_NFX ZnF_PMZ ZnF_Rad18 ZnF_U1
Extracellular
A4_EXTRA A_amylase_inhib AAI Aamy Aamy_C ACR Aerolysin Agglutinin
AIP3 ALBUMIN AMA-1 Amb_all Amb_V_allergen Ami_2 Ami_3 AMOP
ANATO APPLE Asparaginase Autotransporter B_lectin Bet_v_1 BID_1 BID_2
BON BowB BPI1 BPI2 btg1 C1Q C345C C4
C6 CA Cache_2 CADG CALCITONIN CASH CBD_II CBD_IV
CCP CFEM CHASE CHASE2 CHRD ChtBD1 ChtBD2 ChtBD3
ChW CLa CLb CLECT CLIP CNX Col_cuticle_N COLFI
COLIPASE Connexin_CCC CRF CSF2 CT CUB Cutinase CW
CY CysPc DEFSN DISIN DM4_12 DM6 DNaseIc DoH
DSL EGF EGF_CA EGF_Lam EGF_like Elicitin END EPEND
EPH_lbd Excalibur FA58C FAS1 FBG fCBD FGF Fib_alpha
FIMAC Flo11 Flu_M1_C FN1 FN2 FN3 FOLN FRI
FTP FU G2F G5 GA Galanin GASTRIN GEL
GHA GHB GLA GLECT GLUCA Glyco_10 Glyco_18 Glyco_25
Glyco_32 GPS GRAN Haemagg_act HintC HintN HormR HX
HYDRO IB ICA69 IFabd IG IG_like IGc1 IGc2
IGv IL1 IL10 IL2 IL4_13 IL6 IL7 IlGF
INB Inhibitor_I29 Int_alpha Integrin_B_tail Jacalin JHBP KAZAL Kelch
Knot1 KR KU LamB LamG LamGL LamNT LCCL
LDLa LIF_OSM LINK LPD_N LRR LRR_BAC LRR_CC LRR_RI
LRR_SD22 LRR_TYP LRRCT LRRNT LU LY LysM LYZ1
LYZ2 MACPF MAM MANEC MATH MD MHC_II_alpha MHC_II_beta
ML NAT_PEP NEAT NGF NH NIDO NL NMU
NRF NTR NUC OLF OSTEO P4Hc PA2c PAH
PAN_AP PbH1 PBP5_C PBPb PBPe PD PDGF Pept_C1
PGA_cap PGRP PhBP PKD PLP PQQ PRP PSA
PSI PTH PTI PTN PTX RICIN RNAse_Pc s48_45
SAA SAPA SapB SCP SCPU SCY SEA SEL1
Sema SERPIN SF_P SH3b ShKT SO SR STI
STN TECPR TGFB THN TK TNF TNFR TR_FER
TR_THY Tryp_SPc TSP1 TSPc TSPN TY UTG VIT
VPS10 VWA VWC VWD WAP WIF WNT1 WR1
WSC X8 XTALbg Zn_dep_PLPC Zn_pept ZnMc ZP
Others
AAA AAA_PrkA AARP2CN ACTIN AD Ad_cyc_g-alpha Adenylsucc_synt AdoHcyase
AdoHcyase_NAD ADSL_C AFOR_N Agenet Agouti AgrB AgrD Agro_virD5
AGTRAP Aha1_N AHS1 AHS2 AIRC AKAP_110 Ala_racemase_C ALAD
AlaDh_PNT_C AlaDh_PNT_N AlcB Ald_Xan_dh_C Aldolase_II alkPPc Alpha-amyl_C2 Alpha-L-AF_C
Alpha-mann_mid Alpha_adaptinC2 Alpha_kinase Alpha_L_fucos Alpha_TIF Amelin Amelogenin AMP_N
AMPKBI ANX Arfaptin Arg_tRNA_synt_N Arrestin_C ASCH B12-binding_2 B2-adapt-app_C
B3_4 B5 Bac_DnaA_C Bac_rhodopsin BACK BAR BATS BCS1_N
Beach Beta-Casp Beta-TrCP_D BetaGal_dom2 Bgal_small_N BHL Biotin_carb_C BLUF
BMC BRICHOS Brix BRO1 BTAD BTB Btz BURP
c-SKI_SMAD_bind C8 Ca_chan_IQ CactinC_cactus CAD Cadherin_pro calpain_III CaM_binding
CaMBD CAMSAP_CKK Candida_ALS_N CAP10 CAP_GLY Carb_anhydrase CARP CAT
Catalase Cation_ATPase_N CBM49 CBM_10 CBM_2 CBM_25 CBM_3 CBM_X
CBS CDC37_C CDC37_M CDC37_N CDC48_2 CDC48_N Cg6151-P CGGC
CHAD CHB_HEX ChSh CHZ Citrate_ly_lig CK_II_beta CLH ClpB_D2-small
CM_2 CO_deh_flav_C CoA_binding CoA_trans CobW_C COG6 CorC_HlyC CP12
CpcD Cpl-7 Cpn10 CPSase_L_D3 CPSase_sm_chain CPW_WPC CRA CRAL_TRIO_N
CRISPR_assoc CRS1_YhbY CTLH CTNS CUE Cullin_Nedd8 Cupin_1 CVNH
cwf21 CXC CxxC_CXXC_SSSS Cyanate_lyase CYCLIN CYTH D-ser_dehydrat Dabb
Dak1_2 Dak2 DALR_1 DALR_2 DBC1 DBP10CT DBR1 DCD
DCP2 DCX dDENN DDHD DDRGK DELLA DENN DeoC
DeoRC DHDPS DHHA2 DIL DIRP DKCLD DM10 DM11
DM13 DM14 DM15 DM16 DM3 DM5 DM7 DM8
DM9 DnaG_DnaB_bind DnaJ DPBB_1 Drf_FH3 Drf_GBD DRY_EERY DTW
DUF1041 DUF1086 DUF1220 DUF1237 DUF1338 DUF1518 DUF167 DUF1704
DUF1713 DUF1716 DUF1719 DUF1741 DUF1751 DUF1767 DUF1771 DUF1785
DUF1856 DUF1866 DUF1899 DUF1900 DUF1907 DUF1943 DUF1944 DUF3585
DUF3700 DUF4187 DUF4205 DUF4206 DUF4208 DUF862 DUSP DWNN
DysFC DysFN E2_bind EB_dh EF-1_beta_acid EF1_GNE EF1G EFG_C
EFG_IV efhand_Ca_insen EFP eIF1a eIF2B_5 eIF3_N eIF6 EKR
ELFV_dehydrog Elong-fact-P_C EMP24_GP25L Enolase_C Enolase_N ENT eRF1_1 ETF
EZ_HEAT FA FABD FANCL_C FBA FDF FDX-ACB Fe_hyd_SSU
FeoA FerA FerB FerI FERM_C Fibrillarin FIST_C FKS1_dom1
Flavin_Reduct Flavokinase FMN_bind Fn3_like FolB FoP_duplication Frataxin_Cyay FRG
FSA_C FTCD FTCD_N FTO_NTD FtsA G3P_acyltransf G8 G_gamma
Gal-bind_lectin GAL4 GARS_A GARS_C GATase_5 GatB_Yqey GCK GDNF
Germane GIDA_assoc_3 GIT Gln-synt_C GluR_Homer-bdg Gp_dh_N Grip GYF
GYR H-kinase_dim HA2 HABP4_PAI-RBP1 Haem_bd Haem_oxygenase_2 Haemolytic HAT
HDc HEPN HIRAN HTTM HWE_HK IBR IDEAL IG_FLMN
IGR IKKbetaNEMObind IMPDH Integrin_b_cyt IRF-3 IRS JAB_MPN Jag_N
Josephin KaiA KaiB KbaA KIND L51_S25_CI-B8 LA Lactamase_B
LeuA_dimer LH2 Lig_chan-Glu_bd LisH LITAF LON LRRcap Mad3_BUB1_I
Malic_M MbtH MGS MgtE_N MIF4G MIT MltA MoCF_biosynth
Molybdop_Fe4S4 MORN MR_MLE Mterf NADH-G_4Fe-4S_3 NADH_4Fe-4S NDK NEBU
Nfu_N NIL NPCBM OMPdecase OmpH P-II PA14 PAM
PAW PB1 PCRF PepX_C PepX_N PGAM PHB PhnA_Zn_Ribbon
PIG-X PINc PINT PKS_AT PKS_DH PKS_ER PKS_KR PKS_KS
PKS_MT PKS_PP PKS_TE PLEC PlsC PMEI PolyA PP2C_SIG
Prim_Zn_Ribbon Pro-kuma_activ Pro_CA PROF ProQ ProRS-C_1 Proteasome_A_N PSN
Pumilio PWI PWWP PYNP_C QLQ R3H rADc RAP
RelA_SpoT RES RINGv RL11 RNB Robl_LC7 RPEL RuBisCO_small
RUN S1 SAF SAM_PNT SATase_N Sec63 SecA_DEAD SecA_PP_bind
Semialdhyde_dh SEP SHR3_chaperone SMI1_KNR4 SNc SOCS_box Sorb SpoU_sub_bind
SprT SRP54 SRP54_N STI1 SWAP SWIB SynN T5orf172
TAFH TAP_C TGc THEG THUMP THY TilS_C Tim44
TLC TLDc TPK_B1_binding TPR Transket_pyr tRNA_SAD Tubulin Tubulin_C
TUDOR UAS UBA_e1_C uDENN UDPG_MGDP_dh_C UIM UreE_C UreE_N
V4R VKc VRR_NUC WGR WHEP-TRS WHy WRKY WSN
WWE YceI zf-C4_ClpX ZipA_C ZM ZnF_CDGSH ZnF_TAZ ZnF_TTF
ZnF_UBR1 Zpr1

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