BZIP

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It has been suggested that this article or section be merged with Leucine zipper. ()

This article is about the protein domain. For the comression algorithm, see Bzip2.

bZIP transcription factor

CREB (top) is a transcription factor capable of binding DNA via the bZIP domain (bottom) and regulating gene expression.
Identifiers
Symbol	bZIP_1
Pfam	PF00170
InterPro	IPR011616
PROSITE	PDOC00036
SCOP	1ysa
Available PDB structures: 1dh3A:285-339 1t2kD:336-395 1s9kE:257-308 1junB:276-313 1jnmA:254-313 1a02J:257-308 1swiB:249-278 1ce9A:251-279 1uo0A:249-279 1rb5B:249-279 1unwB:249-279 1vzlB:249-279 1untA:249-279 1zimC:249-279 1w5jD:249-279 1zijA:249-279 1rb6A:249-279 2ztaA:249-279 1uo5B:249-279 1rb1C:249-279 1gclC:249-279 1w5gB:249-279 1w5iA:249-279 1uo1A:249-279 1unuB:249-279 1gcmA:249-279 1rb4C:249-279 1uo2B:249-279 1ysaD:226-279 1unzB:249-279 1w5kD:249-279 1ij1A:249-279 1zta :247-279 1ij0A:249-279 1uo3A:249-279 1w5hA:249-279 1ij2A:249-279 1dgcA:227-279 1w5lB:249-279 1unyA:249-279 2b1fB:251-279 2bniB:249-279 1zilA:249-278 1ziiA:249-279 1unvB:249-279 1zikB:249-278 1unxA:249-279 1ij3B:249-279 1uo4A:249-279 1kqlB:255-279 2dgcA:229-277 1piqA:249-279 2b22A:251-279 1lvxA:265-294 1gd2H:74-137 1ci6A:280-339

The Basic Leucine Zipper Domain (bZIP domain) is found in many DNA binding eukaryotic proteins. One part of the domain contains a region that mediates sequence specific DNA binding properties and the leucine zipper that is required for the dimerization of two DNA binding regions. The DNA binding region comprises a number of basic aminoacids such as arginine and lysine. Proteins containig this domain are transcription factors.

1 bZIP transcription factors
2 bZIP domain containing proteins
3 Human proteins containing this domain
4 External links
5 References

bZIP transcription factors

bZIP transcription factors are found in all organisms. A recent evolutionary study revealed that 4 bZIP genes were encoded by the genome of the most recent common ancestor of all plants ¹.

bZIP domain containing proteins

AP-1 fos/jun heterodimer that forms a transcription factor
Jun-B transcription factor
CREB cAMP response element transcription factor
OPAQUE2 (O2) transcription factor of the 22-kD zein gene that encodes a class of storage proteins in the endosperm of maize (Zea Mays) kernels

Human proteins containing this domain

ATF1; ATF2; ATF4; ATF5; ATF6; ATF7; BACH1; BACH2; BATF; BATF2; CREB1; CREB3; CREB3L1; CREB3L2; CREB3L3; CREB3L4; CREB5; CREBL1; CREM; E4BP4; FOSL1; FOSL2; JUN; JUNB; JUND; NFE2; NFE2L2; NFE2L3; SNFT; CREM

External links

References

^ Corrêa LGG, Riaño-Pachón DM, Schrago CG, dos Santos RV, Mueller-Roeber B, Vincentz M. (2008). "The role of bZIP transcription factors in green plant evolution: adaptive features emerging from four founder genes". PLos ONE 3 (8): e2944. doi:10.1371/journal.pone.0002944. PMID 18698409.

v • d • e Protein domains

BZIP - DED - Kringle - PH - SH2 - SH3 - zinc finger - FYVE - PX - ENTH - BAR - PDZ - CARD - SUN - TRIO - C1 - LIM - C2

v • d • e

Transcription factors and intracellular receptors

(1) Basic domains

(1.1) Basic leucine zipper (bZIP)	Activating transcription factor (AATF, 1, 2, 3, 4, 5, 6, 7) • AP-1 (c-Fos, FOSB, FOSL1, FOSL2, c-Jun, JUNB, JUND) • BACH (1, 2) • BATF • BLZF1 • C/EBP (α, β, γ, δ, ε, ζ) • CREB (1, 3, L1) • CREM • DBP • DDIT3 • GABPA • HLF • MAF (B, F, G, K) • NFE (2, L1, L2) • NRL • NRF1 • XBP1

(1.2) Basic helix-loop-helix (bHLH)	ATOH1 • AhR • AHRR • ARNT • ASCL1 • BHLHB2 • BMAL (ARNTL, ARNTL2) • CLOCK • EPAS1 • HAND (1, 2) • HES (5, 6) • HEY (1, 2, L) • HES1 • HIF (1A, 3A) • ID (1, 2, 3, 4) • LYL1 • MXD4 • MYCL1 • MYCN • Myogenic regulatory factors (MyoD, Myogenin, MYF5, MYF6) • Neurogenins • NeuroD (1, 2) • NPAS (1, 2, 3) • OLIG (1, 2) • Scleraxis • TAL1 • Twist • USF1

(1.3) bHLH-ZIP	AP-4 • MAX • MITF • MNT • MLX • MXI1 • Myc • SREBP (1, 2)

(1.4) NF-1	NFIC

(1.5) RF-X	NFX1

(1.6) Basic helix-span-helix (bHSH)	AP-2 (α, β, γ, δ, ε)

(2) Zinc finger DNA-binding domains

(2.1) Nuclear receptor (Cys₄)	subfamily 1 (Thyroid hormone (α, β), CAR, FXR, LXR (α, β), PPAR (α, β/δ, γ), PXR, RAR (α, β, γ), ROR (α, β, γ), Rev-ErbA (α, β), VDR) subfamily 2 (COUP-TF (I, II), Ear-2, HNF4 (α, γ), PNR, RXR (α, β, γ), Testicular receptor (2, 4), TLX) subfamily 3 (Steroid hormone (Androgen, Estrogen (α, β), Glucocorticoid, Mineralocorticoid, Progesterone), Estrogen related (α, β, γ)) subfamily 4 NUR (NGFIB, NOR1, NURR1) • subfamily 5 (LRH-1, SF1) • subfamily 6 (GCNF) • subfamily 0 (DAX1, SHP)

(2.2) Other Cys₄	GATA (1, 2, 3, 4, 5, 6) • MTA (1, 2, 3) • TRPS1

(2.3) Cys₂His₂	General transcription factors (TFIIA, TFIIB, TFIID, TFIIE, TFIIF (1, 2), TFIIH (1, 2, 4, 2I, 3A, 3C1, 3C2)) ATBF1 • BCL (6, 11A, 11B) • CTCF • E4F1 • EGR (2, 3) • ERV3 • GFI1 • GLI-Krüppel family (1, 2, 3, S2, YY1) • HIC (1, 2) • HIVEP (1, 2, 3) • IKZF (1, 2, 3) • ILF (2, 3) • KLF (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 17 ) • MTF1 • MYT1 • OSR1 • SP (1, 2, 4, 7) • Zbtb7 (7A, 7B) • ZBTB (16, 17, 20, 32, 33, 40) • zinc finger (3, 7, 9, 10, 19, 22, 24, 33B, 34, 35, 41, 43, 44, 51, 74, 143, 146, 148, 165, 202, 217, 219, 238, 239, 259, 267, 268, 281, 295, 318, 330, 346, 350, 365, 366, 384, 423, 451, 452, 471, 593, 638, 649, 655)

(2.4) Cys₆	HIVEP1

(2.5) Alternating composition	AIRE • DIDO1 • GRLF1 • ING (1, 2, 4) • JARID (1A, 1B, 1C, 1D, 2) • JMJD1B

(3) Helix-turn-helix domains

(3.1) Homeo domain	ARX • CDX (1, 2) • CRX • CUTL1 • DLX (3, 4, 5) • EMX2 • EN (1, 2) • FHL (1, 2, 3) • HESX1 • HHEX • HLX • Homeobox (A1, A3, A4, A5, A7, A9, A10, A11, A13, B1, B2, B3, B4, B5, B6, B7, B8, B9, B13, C4, C5, C6, C8, C9, C10, C11, C13, D1, D3, D4, D8, D9, D10, D11, D12, D13) • HOPX • MEIS (1, 2) • MEOX2 • MNX1 • MSX (1, 2) • NANOG • NKX (2-1, 2-2, 2-3, 2-5, 3-1, 3-2) • PBX (1, 2, 3) • PHF (1, 3, 6, 8, 10, 16, 17, 20, 21A) • PITX (1, 2, 3) • POU domain (PIT-1, BRN-3: A, B, C, Octamer transcription factor: 1, 2, 3/4, 6, 7, 11) • OTX (1, 2) • PDX1

(3.2) Paired box	PAX (1, 2, 3, 4, 5, 6, 7, 8, 9)

(3.3) Fork head / winged helix	E2F (1, 2, 3, 4, 5) • FOX proteins (C1, C2, E1, G1, H1, K2, L2, M1, N3, O1A, O3A, O4, P1, P2, P3)

(3.4) Heat Shock Factors	HSF (1, 2, 4)

(3.5) Tryptophan clusters	ELF (4, 5) • EGF • ELK (1, 3, 4) • ERF • ERG • ETS (1, 2, SPIB) • ETV (1, 4, 5, 6) • FLI1 • Interferon regulatory factors (1, 2, 3, 4, 5, 6, 7, 8) • MYB • MYBL2

(3.6) TEA domain	transcriptional enhancer factor 1, 2

(4) β-Scaffold factors with minor groove contacts

(4.1) Rel homology region	NF-κB (NFKB1, NFKB2, REL, RELA, RELB) • NFAT (C1, C2, C3, C4, 5)

(4.2) STAT	STAT (1, 2, 3, 4, 5, 6)

(4.3) p53	p53 • TBX (1, 2, 3, 5, 19, 21, 22)

(4.4) MADS box	Mef2 (A, B, C, D) • SRF

(4.6) TATA binding proteins	TBP • TBPL1

(4.7) High mobility group	HMGB (1, 2, 3) • HNF (1A, 1B) • LEF1 • SOX (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 18, 21) • SRY • SSRP1 • TOX (1, 2, 3, 4)

(4.10) Cold-shock domain	CSDA, YBX1

(4.11) Runt	CBF (CBFA2T2, CBFA2T3, RUNX1, RUNX2, RUNX3, RUNX1T1)

(0) Other transcription factors

(0.2) HMGI(Y)	HMGA (1, 2) • HBP1

(0.3) Pocket domain	Rb • RBL1 • RBL2

(0.5) AP-2/EREBP-related factors	Apetala 2 • EREBP • B3

(0.6) Miscellaneous	ARID (1A, 1B, 2, 3A, 3B, 4A) • CAP • IFI (16, 35) • MLL (2, 3, T1) • MNDA • NFI (A, B, C, X) • NFY (A, B, C) • Rho/Sigma • R-SMAD

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