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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative

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Evolutionary classification of protein domain structures

alpha arraysalpha-helix arrays with mainly perpendicular helices

alpha bundlesalpha-helix bundles with mainly parallel helices

X: Bromodomain-like
H: Bromodomain
T: Bromodomain
F: Bromodomain

PF00439

Representatives:

e5i29A1[A:1500-1638] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcription initiation factor TFIID subunit 1 ; ligands: 67B,CA ; X-RAY DIFFRACTION 1.210Å

e1e6iA1[A:329-439] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL ACTIVATOR GCN5 ; X-RAY DIFFRACTION 1.87Å

e8cv7B1[B:346-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Isoform 3 of Bromodomain-containing protein 2 ; ligands: ACE ; X-RAY DIFFRACTION 1.60Å

e8px8A1[A:346-455] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: EDO,I0U,MES ; X-RAY DIFFRACTION 1.60Å

e8cv6A1[A:343-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BRD4 protein ; ligands: ACE ; X-RAY DIFFRACTION 1.7Å

e8sb6B1[B:76-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 1.78Å

e8sb6C1[C:76-181] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 1.78Å

e8dnqB1[B:72-187] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: GOL ; X-RAY DIFFRACTION 1.84Å

e8bptB1[B:162-300] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 1.60Å

e8ewvD1[D:60-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: X5K ; X-RAY DIFFRACTION 3.4Å

e8ewvH1[H:60-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: X5K ; X-RAY DIFFRACTION 3.4Å

e8ewvL1[L:60-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: X5K ; X-RAY DIFFRACTION 3.4Å

e8ewvP1[P:60-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: X5K ; X-RAY DIFFRACTION 3.4Å

e8ewvT1[T:60-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: X5K ; X-RAY DIFFRACTION 3.4Å

e8ewvX1[X:60-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: X5K ; X-RAY DIFFRACTION 3.4Å

e8cv4B1[B:349-463] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BRD4 protein ; ligands: ACE ; X-RAY DIFFRACTION 1.93Å

e8ahcA1[A:22-134] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: M2O ; X-RAY DIFFRACTION 1.504Å

e8pxnB1[B:43-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ZTT ; X-RAY DIFFRACTION 1.95Å

e8ibqA1[A:43-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: OWO ; X-RAY DIFFRACTION 1.45Å

e8p9gA1[A:42-166] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: EDO,X9K ; X-RAY DIFFRACTION 1.10Å

e8p9hA1[A:42-166] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: EDO,X9C ; X-RAY DIFFRACTION 1.19Å

e8p9iA1[A:42-165] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: EDO,X8T ; X-RAY DIFFRACTION 1.23Å

e8p9iB1[B:42-166] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: EDO,X8T ; X-RAY DIFFRACTION 1.23Å

e8p9jA1[A:42-166] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: EDO,X8O ; X-RAY DIFFRACTION 1.42Å

e8p9kA1[A:42-166] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: EDO,X9U ; X-RAY DIFFRACTION 1.25Å

e8p9lA1[A:42-166] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: EDO,XA3 ; X-RAY DIFFRACTION 1.29Å

e8piqA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: DMS,EDO,ZHO ; X-RAY DIFFRACTION 1.117Å

e8pxmB1[B:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: EDO,ZTY ; X-RAY DIFFRACTION 2.38Å

e8pxnA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: EDO,ZTT ; X-RAY DIFFRACTION 1.95Å

e8pxnC1[C:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: ZTT ; X-RAY DIFFRACTION 1.95Å

e8pxnD1[D:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: EDO,ZTT ; X-RAY DIFFRACTION 1.95Å

e8g1pH1[H:1377-1490] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: FWZ,GOL ; X-RAY DIFFRACTION 2.7Å

e2yemA1[A:349-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: WSH ; X-RAY DIFFRACTION 2.30Å

e3iu5A1[A:41-154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN POLYBROMO-1 ; X-RAY DIFFRACTION 1.63Å

e3oniA1[A:346-455] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN CONTAINING 2, ISOFORM CRA_A ; ligands: EDO,JQ1,NI ; X-RAY DIFFRACTION 1.61Å

e2ydwA1[A:76-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: WSH ; X-RAY DIFFRACTION 1.9Å

e2wp2A1[A:18-136] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; X-RAY DIFFRACTION 2.37Å

e3s92A1[A:307-416] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 3 ; ligands: EDO,JQ1 ; X-RAY DIFFRACTION 1.36Å

e3mb3A1[A:1316-1431] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PH-INTERACTING PROTEIN ; ligands: MB3 ; X-RAY DIFFRACTION 2.25Å

e3mb4A1[A:620-734] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein polybromo-1 ; ligands: CL,EDO,MB3 ; X-RAY DIFFRACTION 1.66Å

e3q2fA1[A:1856-1970] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN ADJACENT TO ZINC FINGER DOMAIN PROTEIN 2B ; ligands: EDO,OAM ; X-RAY DIFFRACTION 2.06Å

e3q2eA1[A:1317-1423] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN AND WD REPEAT-CONTAINING PROTEIN 1 ; ligands: ACT ; X-RAY DIFFRACTION 1.74Å

e3qzvA1[A:65-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

NUCLEOSOME-REMODELING FACTOR SUBUNIT BPTF ; X-RAY DIFFRACTION 2.0Å

e2wp1A1[A:259-382] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; X-RAY DIFFRACTION 2.10Å

e4a9eA1[A:75-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: 3PF,EDO,SO4 ; X-RAY DIFFRACTION 1.91Å

e4a9mA1[A:75-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN CONTAINING 2 ; ligands: P9M,SO4 ; X-RAY DIFFRACTION 2.06Å

e4alhA1[A:75-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN CONTAINING 2 ; ligands: A9P,EDO,SO4 ; X-RAY DIFFRACTION 1.97Å

e3uvdA1[A:1447-1568] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTION ACTIVATOR BRG1 ; ligands: MB3 ; X-RAY DIFFRACTION 1.85Å

e3uv2A1[A:2793-2911] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain of human nucleosome-remodeling factor subunit BPTF ; ligands: 7PE ; X-RAY DIFFRACTION 1.580Å

e2g4aA1[A:1-108] Image Pymol Jmol Links: PDB, SCOP, CATH

Bromodomain-containing protein 2 ; SOLUTION NMR

e2rfjA1[A:20-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; X-RAY DIFFRACTION 2.05Å

e2ouoA1[A:349-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: EDO ; X-RAY DIFFRACTION 1.740Å

e1x0jA1[A:73-186] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: DTT ; X-RAY DIFFRACTION 1.8Å

e2nxbA1[A:34-144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 3 ; ligands: EDO,NA ; X-RAY DIFFRACTION 1.400Å

e2e7nA1[A:1-117] Image Pymol Jmol Links: PDB, SCOP, CATH

Bromodomain-containing protein 3 ; SOLUTION NMR

e2grcA1[A:1449-1569] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable global transcription activator SNF2L4 ; X-RAY DIFFRACTION 1.5Å

e3g0jA1[A:615-731] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN POLYBROMO-1 ; ligands: EDO ; X-RAY DIFFRACTION 1.78Å

e3g0lA1[A:1856-1970] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN ADJACENT TO ZINC FINGER DOMAIN PROTEIN 2B ; ligands: EDO ; X-RAY DIFFRACTION 2.03Å

e2nxbB1[B:23-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 3 ; ligands: EDO ; X-RAY DIFFRACTION 1.400Å

e2f6jC1[C:65-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN PHD FINGER TRANSCRIPTION FACTOR ; X-RAY DIFFRACTION 2.0Å

e2f6nA1[A:65-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain PHD finger transcription factor ; X-RAY DIFFRACTION 2.00Å

e2f6nB1[B:65-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain PHD finger transcription factor ; X-RAY DIFFRACTION 2.00Å

e2fsaC1[C:65-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN PHD FINGER TRANSCRIPTION FACTOR ; X-RAY DIFFRACTION 1.9Å

e1x0jB1[B:73-184] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: DTT ; X-RAY DIFFRACTION 1.8Å

e1x0jC1[C:76-182] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: DTT,MES ; X-RAY DIFFRACTION 1.8Å

e2f6jB1[B:65-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN PHD FINGER TRANSCRIPTION FACTOR ; X-RAY DIFFRACTION 2.0Å

e2fsaA1[A:65-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN PHD FINGER TRANSCRIPTION FACTOR ; X-RAY DIFFRACTION 1.9Å

e2fsaB1[B:65-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN PHD FINGER TRANSCRIPTION FACTOR ; X-RAY DIFFRACTION 1.9Å

e2i8nA1[A:1-108] Image Pymol Jmol Links: PDB, SCOP, CATH

Bromodomain-containing protein 4 ; SOLUTION NMR

e2e3kA1[A:348-455] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; X-RAY DIFFRACTION 2.3Å

e2e3kC1[C:348-455] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; X-RAY DIFFRACTION 2.3Å

e2oo1A1[A:307-416] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 3 ; ligands: 7PE,EDO,NA ; X-RAY DIFFRACTION 1.700Å

e2oo1B1[B:307-416] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 3 ; ligands: EDO ; X-RAY DIFFRACTION 1.700Å

e2oo1C1[C:307-416] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 3 ; ligands: 7PE,EDO ; X-RAY DIFFRACTION 1.700Å

e2oo1D1[D:307-416] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 3 ; ligands: 7PE,EDO,NA ; X-RAY DIFFRACTION 1.700Å

e2e7oA1[A:1-112] Image Pymol Jmol Links: PDB, SCOP, CATH

Bromodomain adjacent to zinc finger domain 2B ; SOLUTION NMR

e2h60A1[A:11-115] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable global transcription activator SNF2L4 ; SOLUTION NMR

e2yynA1[A:16-128] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.5Å

e2yynB1[B:16-129] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.5Å

e2yynC1[C:16-128] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.5Å

e2yynD1[D:16-128] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.5Å

e2dvqA1[A:73-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2dvrA1[A:7-120] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2dvsA1[A:7-120] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2rfjB1[B:20-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; X-RAY DIFFRACTION 2.05Å

e2rfjC1[C:30-133] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; X-RAY DIFFRACTION 2.05Å

e2dwwA1[A:1-114] Image Pymol Jmol Links: PDB, SCOP, CATH

Bromodomain-containing protein 4 ; ligands: CL ; X-RAY DIFFRACTION 1.770Å

e2dvqB1[B:73-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2dvqC1[C:76-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2dvrB1[B:7-118] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2dvrC1[C:10-116] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2dvsB1[B:7-118] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2dvsC1[C:10-116] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

bromodomain-containing protein 2 ; X-RAY DIFFRACTION 2.040Å

e2yqdA1[A:1-120] Image Pymol Jmol Links: PDB, SCOP, CATH

POLYBROMO-1 ; SOLUTION NMR

e3g0jB1[B:621-731] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN POLYBROMO-1 ; ligands: EDO,NO3 ; X-RAY DIFFRACTION 1.78Å

e2ri7A1[A:65-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Nucleosome-remodeling factor subunit BPTF ; ligands: GOL,IPA ; X-RAY DIFFRACTION 1.45Å

e2wp1B1[B:265-377] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; X-RAY DIFFRACTION 2.10Å

e2wp2B1[B:27-136] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; X-RAY DIFFRACTION 2.37Å

e3mb4B1[B:619-734] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein polybromo-1 ; ligands: CL,EDO,MB3 ; X-RAY DIFFRACTION 1.66Å

e3jvlA1[A:345-460] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: BME,EDO ; X-RAY DIFFRACTION 1.2Å

e3jvmA1[A:345-460] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: BME,EDO ; X-RAY DIFFRACTION 1.2Å

e3qztA1[A:66-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

NUCLEOSOME-REMODELING FACTOR SUBUNIT BPTF ; ligands: GOL ; X-RAY DIFFRACTION 1.5Å

e3tlpB1[B:481-597] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN POLYBROMO-1 ; ligands: NI ; X-RAY DIFFRACTION 2.13Å

e3o37A1[A:890-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.0Å

e3o37C1[C:890-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.0Å

e3o37D1[D:891-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.0Å

e3aqaA1[A:73-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: BYH,MES ; X-RAY DIFFRACTION 2.3Å

e2yekA1[A:74-187] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: EAM ; X-RAY DIFFRACTION 1.98Å

e3qzsA1[A:64-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

NUCLEOSOME-REMODELING FACTOR SUBUNIT BPTF ; X-RAY DIFFRACTION 1.8Å

e3qzsB1[B:64-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

NUCLEOSOME-REMODELING FACTOR SUBUNIT BPTF ; X-RAY DIFFRACTION 1.8Å

e2yemB1[B:349-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: WSH ; X-RAY DIFFRACTION 2.30Å

e3aqaB1[B:73-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; X-RAY DIFFRACTION 2.3Å

e3aqaC1[C:76-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; X-RAY DIFFRACTION 2.3Å

e2ydwB1[B:77-181] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: SO4,WSH ; X-RAY DIFFRACTION 1.9Å

e2ydwC1[C:76-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: WSH ; X-RAY DIFFRACTION 1.9Å

e2yekB1[B:76-182] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: EAM ; X-RAY DIFFRACTION 1.98Å

e2yekC1[C:76-181] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: EAM,SO4 ; X-RAY DIFFRACTION 1.98Å

e3s91A1[A:36-142] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 3 ; ligands: IPA,JQ1 ; X-RAY DIFFRACTION 2.06Å

e3tlpA1[A:478-596] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN POLYBROMO-1 ; ligands: NI ; X-RAY DIFFRACTION 2.13Å

e3o33A1[A:882-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTION INTERMEDIARY FACTOR 1-ALPHA ; X-RAY DIFFRACTION 2.0Å

e3jvjA1[A:40-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO,GOL ; X-RAY DIFFRACTION 1.55Å

e2l5eA1[A:21-147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 3 ; SOLUTION NMR

e3svfA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: WDR ; X-RAY DIFFRACTION 1.98Å

e3k2jA1[A:342-462] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN POLYBROMO-1 ; ligands: CL ; X-RAY DIFFRACTION 2.2Å

e3u5mA2[A:944-1087] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

E3 UBIQUITIN-PROTEIN LIGASE TRIM33 ; ligands: CA ; X-RAY DIFFRACTION 3.08Å

e4a9lA1[A:42-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO,NO3,P9L ; X-RAY DIFFRACTION 1.6Å

e3uvwA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO ; X-RAY DIFFRACTION 1.37Å

e3uvxA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: EDO,FMT,NA ; X-RAY DIFFRACTION 1.91Å

e3uw9A1[A:43-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; X-RAY DIFFRACTION 2.300Å

e4e96A1[A:42-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 0NS,DMS,EDO,NA ; X-RAY DIFFRACTION 1.92Å

e4flpA1[A:27-134] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; ligands: JQ1 ; X-RAY DIFFRACTION 2.23Å

e4f3iA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 0S6,EDO ; X-RAY DIFFRACTION 1.4Å

e4gpjA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 0Q1,EDO,NA ; X-RAY DIFFRACTION 1.600Å

e4hbvA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 15E,EDO ; X-RAY DIFFRACTION 1.63Å

e2lspB1[B:333-460] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; SOLUTION NMR

e4algA1[A:15-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: 1GH,ACT,GOL ; X-RAY DIFFRACTION 1.60Å

e3fkmX1[X:331-455] Image Pymol Jmol Links: PDB, SCOP, CATH

e2datA1[A:1-123] Image Pymol Jmol Links: PDB, SCOP, CATH

Possible global transcription activator SNF2L2 ; SOLUTION NMR

e2ossA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: EDO ; X-RAY DIFFRACTION 1.350Å

e4j0rA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 1H2,EDO,IOD ; X-RAY DIFFRACTION 1.72Å

e4ir3A1[A:1856-1971] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain adjacent to zinc finger domain protein 2B ; ligands: 1FK,EDO,GOL ; X-RAY DIFFRACTION 2.00Å

e2dvvA1[A:1-455] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; ligands: EPE ; X-RAY DIFFRACTION 1.8Å

e2e3kB1[B:1-455] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; X-RAY DIFFRACTION 2.3Å

e2e3kD1[D:2-455] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 2 ; X-RAY DIFFRACTION 2.3Å

e2yw5A1[A:18-155] Image Pymol Jmol Links: PDB, SCOP, CATH

Bromodomain-containing protein 3 ; SOLUTION NMR

e3jvkA1[A:39-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO ; X-RAY DIFFRACTION 1.8Å

e3mukA1[A:40-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO ; X-RAY DIFFRACTION 1.75Å

e3mulA1[A:40-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO ; X-RAY DIFFRACTION 1.65Å

e3k2jB1[B:342-462] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN POLYBROMO-1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.2Å

e3mxfA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: DMS,EDO,IOD,JQ1 ; X-RAY DIFFRACTION 1.6Å

e3o33C1[C:882-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTION INTERMEDIARY FACTOR 1-ALPHA ; X-RAY DIFFRACTION 2.0Å

e3o34A1[A:882-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTION INTERMEDIARY FACTOR 1-ALPHA ; X-RAY DIFFRACTION 1.9Å

e3o35B1[B:882-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTION INTERMEDIARY FACTOR 1-ALPHA ; X-RAY DIFFRACTION 1.76Å

e3o36A1[A:882-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTION INTERMEDIARY FACTOR 1-ALPHA ; X-RAY DIFFRACTION 1.7Å

e3o36B1[B:882-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTION INTERMEDIARY FACTOR 1-ALPHA ; X-RAY DIFFRACTION 1.7Å

e3o37B1[B:882-1006] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcription intermediary factor 1-alpha ; X-RAY DIFFRACTION 2.0Å

e3p5oA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EAM,EDO ; X-RAY DIFFRACTION 1.6Å

e2yelA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HUMAN BRD4 ; ligands: EDO,WSH ; X-RAY DIFFRACTION 1.65Å

e3svgA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO,ODR ; X-RAY DIFFRACTION 1.68Å

e3zyuA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 1GH,EDO ; X-RAY DIFFRACTION 1.5Å

e3zyuB1[B:42-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 1GH,EDO ; X-RAY DIFFRACTION 1.5Å

e3u5jA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 08H,EDO ; X-RAY DIFFRACTION 1.6Å

e3u5kA1[A:42-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 08J ; X-RAY DIFFRACTION 1.8Å

e3u5kB1[B:43-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 08J ; X-RAY DIFFRACTION 1.8Å

e3u5kC1[C:43-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 08J ; X-RAY DIFFRACTION 1.8Å

e3u5kD1[D:42-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 08J ; X-RAY DIFFRACTION 1.8Å

e3u5lA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 08K,EDO ; X-RAY DIFFRACTION 1.39Å

e4hxkA1[A:43-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1AJ ; X-RAY DIFFRACTION 1.610Å

e3u5mF1[F:940-1058] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

E3 UBIQUITIN-PROTEIN LIGASE TRIM33 ; ligands: CA ; X-RAY DIFFRACTION 3.08Å

e3u5mH1[H:940-1058] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

E3 UBIQUITIN-PROTEIN LIGASE TRIM33 ; ligands: CA ; X-RAY DIFFRACTION 3.08Å

e4hxmA1[A:43-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1A8 ; X-RAY DIFFRACTION 1.420Å

e4hxsA1[A:43-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1A3 ; X-RAY DIFFRACTION 1.430Å

e4hbyA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 13F,EDO ; X-RAY DIFFRACTION 1.59Å

e3uvyA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; X-RAY DIFFRACTION 2.02Å

e4hbxA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 14X ; X-RAY DIFFRACTION 1.62Å

e3uw9C1[C:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: ALY ; X-RAY DIFFRACTION 2.300Å

e4hxoA1[A:43-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1A6 ; X-RAY DIFFRACTION 1.760Å

e4hxlA1[A:43-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1A9 ; X-RAY DIFFRACTION 1.520Å

e4hxrA1[A:43-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1A4 ; X-RAY DIFFRACTION 1.530Å

e4j0sA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 1H3,EDO ; X-RAY DIFFRACTION 1.84Å

e4hxpA1[A:43-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1A5 ; X-RAY DIFFRACTION 1.730Å

e4hxnA1[A:43-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1A7 ; X-RAY DIFFRACTION 1.490Å

e3uw9B1[B:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; X-RAY DIFFRACTION 2.300Å

e3uw9D1[D:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; X-RAY DIFFRACTION 2.300Å

e4hbwA1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 14Z,EDO,K ; X-RAY DIFFRACTION 1.69Å

e4flpB1[B:19-124] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; ligands: JQ1,K ; X-RAY DIFFRACTION 2.23Å

e4ir6A1[A:1856-1971] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain adjacent to zinc finger domain protein 2B ; ligands: EDO,IR6 ; X-RAY DIFFRACTION 1.80Å

e4ir4A1[A:1856-1971] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain adjacent to zinc finger domain protein 2B ; ligands: EDO,IR4 ; X-RAY DIFFRACTION 2.05Å

e4ir5A1[A:1856-1971] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain adjacent to zinc finger domain protein 2B ; ligands: EDO,IR5 ; X-RAY DIFFRACTION 1.70Å

e4kv4A1[A:4-114] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: DTT ; X-RAY DIFFRACTION 2.0Å

e4kv1A1[A:41-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; X-RAY DIFFRACTION 1.5Å

e4kv1B1[B:43-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; X-RAY DIFFRACTION 1.5Å

e4ldfA1[A:8-114] Image Pymol Jmol Links: PDB, SCOP, CATH

GCN5 like acetylase + bromodomain ; ligands: GOL ; X-RAY DIFFRACTION 2.000Å

e4ldfB1[B:9-114] Image Pymol Jmol Links: PDB, SCOP, CATH

GCN5 like acetylase + bromodomain ; ligands: GOL,UNX ; X-RAY DIFFRACTION 2.000Å

e4lr6A1[A:42-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1XA,FMT ; X-RAY DIFFRACTION 1.30Å

e4lrgA1[A:41-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing protein 4 ; ligands: 1XB ; X-RAY DIFFRACTION 2.210Å

e4lz2A1[A:1799-1898] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain adjacent to zinc finger domain protein 2A ; ligands: EDO ; X-RAY DIFFRACTION 1.76Å

e4kcxA1[A:29-134] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; ligands: 1QK,CL ; X-RAY DIFFRACTION 2.0Å

e4kcxB1[B:29-134] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN TESTIS-SPECIFIC PROTEIN ; ligands: 1QK,CL ; X-RAY DIFFRACTION 2.0Å

e4bw1A1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO,S5B ; X-RAY DIFFRACTION 1.4Å

e4bw2A1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: EDO,UTH ; X-RAY DIFFRACTION 1.92Å

e4bw3A1[A:42-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BROMODOMAIN-CONTAINING PROTEIN 4 ; ligands: 9BM,EDO ; X-RAY DIFFRACTION 1.5Å

Next

e3dwyA1[A:1084-1197] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CREB-binding protein ; ligands: EDO ; X-RAY DIFFRACTION 1.98Å

e3d7cA1[A:731-832] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GENERAL CONTROL OF AMINO ACID SYNTHESIS PROTEIN 5-LIKE 2 ; X-RAY DIFFRACTION 2.06Å

e1eqfA1[A:1359-1497] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RNA POLYMERASE II TRANSCRIPTION INITIATION FACTOR ; X-RAY DIFFRACTION 2.1Å

e1eqfA2[A:1498-1625] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RNA POLYMERASE II TRANSCRIPTION INITIATION FACTOR ; ligands: SO4 ; X-RAY DIFFRACTION 2.1Å

e5k29A1[A:5-123] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

uncharacterized protein BDF5 ; ligands: UNX ; X-RAY DIFFRACTION 2.100Å

e5n15A1[A:191-327] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Bromodomain-containing factor 1 ; ligands: EPE,IOD ; X-RAY DIFFRACTION 2.37Å

F: Unmapped domains

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.

alpha superhelicesrepeating alpha-helix hairpins form a superhelix

alpha duplicates or obligate multimersalpha duplicates or monomers associate together to form a compact domain

alpha complex topologyalpha domain with complex and unique topology that cannot be described as array or bundle or superhelix

beta barrelssingle beta-sheet folded upon itself to form a barrel

beta meanderssingle beta-sheet with mainly meander topology

beta sandwichestwo beta-sheets stacked together to form a sandwich

beta duplicates or obligate multimersbeta duplicates or monomers associate together to form a compact domain

beta complex topologybeta domains with complex and unique topology that cannot be described as barrel or sandwich or meander

a+b two layersone alpha-helix layer and one beta-sheet layer

a+b three layersone mainly antiparallel beta-sheet layer sandwiched between two alpha-helix layers

a+b four layerstwo beta-sheet layers sandwiched between two alpha-helix layers

a+b complex topologyalpha and beta domain with complex and unique topology that cannot be described in layers

a+b duplicates or obligate multimersalpha and beta duplicates or monomers associated together to form a compact domain

a/b barrelsrepeating beta-alpha units form a barrel

a/b three-layered sandwichesrepeating beta-alpha units form a sandwich with a mainly parallel beta-sheet layer stacked between two alpha-helix layers

mixed a+b and a/balpha and beta domain consists of both a+b and a/b regions

few secondary structure elementsstabilized by cofactors or disulfides

extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes