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1dh3

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Revision as of 07:03, 24 December 2014

CRYSTAL STRUCTURE OF A CREB BZIP-CRE COMPLEX REVEALS THE BASIS FOR CREB FAIMLY SELECTIVE DIMERIZATION AND DNA BINDING

Structural highlights

1dh3 is a 4 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[CREB1_MOUSE] Phosphorylation-dependent transcription factor that stimulates transcription upon binding to the DNA cAMP response element (CRE), a sequence present in many viral and cellular promoters. Transcription activation is enhanced by the TORC coactivators which act independently of Ser-133 phosphorylation. Involved in different cellular processes including the synchronization of circadian rhythmicity and the differentiation of adipose cells.^[1] ^[2]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The cAMP responsive element-binding protein (CREB) is central to second messenger regulated transcription. To elucidate the structural mechanisms of DNA binding and selective dimerization of CREB, we determined to 3.0 A resolution, the structure of the CREB bZIP (residues 283-341) bound to a 21-base pair deoxynucleotide that encompasses the canonical 8-base pair somatostatin cAMP response element (SSCRE). The CREB dimer is stabilized in part by ionic interactions from Arg(314) to Glu(319') and Glu(328) to Lys(333') as well as a hydrogen bond network that links the carboxamide side chains of Gln(322')-Asn(321)-Asn(321')-Gln(322). Critical to family selective dimerization are intersubunit hydrogen bonds between basic region residue Tyr(307) and leucine zipper residue Glu(312), which are conserved in all CREB/CREM/ATF-1 family members. Strikingly, the structure reveals a hexahydrated Mg(2+) ion bound in the cavity between the basic region and SSCRE that makes a water-mediated DNA contact. DNA binding studies demonstrate that Mg(2+) ions enhance CREB bZIP:SSCRE binding by more than 25-fold and suggest a possible physiological role for this ion in somatostatin cAMP response element and potentially other CRE-mediated gene expression.

The structure of a CREB bZIP.somatostatin CRE complex reveals the basis for selective dimerization and divalent cation-enhanced DNA binding.,Schumacher MA, Goodman RH, Brennan RG J Biol Chem. 2000 Nov 10;275(45):35242-7. PMID:10952992^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Gau D, Lemberger T, von Gall C, Kretz O, Le Minh N, Gass P, Schmid W, Schibler U, Korf HW, Schutz G. Phosphorylation of CREB Ser142 regulates light-induced phase shifts of the circadian clock. Neuron. 2002 Apr 11;34(2):245-53. PMID:11970866
↑ Ma X, Zhang H, Yuan L, Jing H, Thacker P, Li D. CREBL2, interacting with CREB, induces adipogenesis in 3T3-L1 adipocytes. Biochem J. 2011 Oct 1;439(1):27-38. doi: 10.1042/BJ20101475. PMID:21728997 doi:http://dx.doi.org/10.1042/BJ20101475
↑ Schumacher MA, Goodman RH, Brennan RG. The structure of a CREB bZIP.somatostatin CRE complex reveals the basis for selective dimerization and divalent cation-enhanced DNA binding. J Biol Chem. 2000 Nov 10;275(45):35242-7. PMID:10952992 doi:10.1074/jbc.M007293200

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1dh3"

@@ Line 6: / Line 6: @@
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1dh3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dh3 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dh3 RCSB], [http://www.ebi.ac.uk/pdbsum/1dh3 PDBsum]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/CREB1_MOUSE CREB1_MOUSE]] Phosphorylation-dependent transcription factor that stimulates transcription upon binding to the DNA cAMP response element (CRE), a sequence present in many viral and cellular promoters. Transcription activation is enhanced by the TORC coactivators which act independently of Ser-133 phosphorylation. Involved in different cellular processes including the synchronization of circadian rhythmicity and the differentiation of adipose cells.<ref>PMID:11970866</ref> <ref>PMID:21728997</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]

1dh3

From Proteopedia

Revision as of 07:03, 24 December 2014

CRYSTAL STRUCTURE OF A CREB BZIP-CRE COMPLEX REVEALS THE BASIS FOR CREB FAIMLY SELECTIVE DIMERIZATION AND DNA BINDING

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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