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1cqt

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{{STRUCTURE_1cqt| PDB=1cqt | SCENE= }}
{{STRUCTURE_1cqt| PDB=1cqt | SCENE= }}
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'''CRYSTAL STRUCTURE OF A TERNARY COMPLEX CONTAINING AN OCA-B PEPTIDE, THE OCT-1 POU DOMAIN, AND AN OCTAMER ELEMENT'''
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===CRYSTAL STRUCTURE OF A TERNARY COMPLEX CONTAINING AN OCA-B PEPTIDE, THE OCT-1 POU DOMAIN, AND AN OCTAMER ELEMENT===
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==Overview==
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We have determined the crystal structure, at 3.2 A, of a ternary complex containing an OCA-B peptide, the Oct-1 POU domain, and an octamer DNA site. The OCA-B peptide binds in the major groove near the center of the octamer site, and its polypeptide backbone forms a pair of hydrogen bonds with the adenine base at position 5 of the octamer DNA. Numerous protein-protein contacts between the OCA-B peptide and the POU domain are also involved in the ternary complex. In particular, the hydrophobic surface from a short alpha-helix of OCA-B helps to stabilize the complex by binding to a hydrophobic pocket on the POU-specific domain. The structure of this ternary complex is consistent with previous biochemical studies and shows how peptide-DNA and peptide-protein contacts from OCA-B provide structural and functional specificity in the regulation of immunoglobulin transcription.
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(as it appears on PubMed at http://www.pubmed.gov), where 10541551 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10541551}}
==About this Structure==
==About this Structure==
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[[Category: Protein-dna complex]]
[[Category: Protein-dna complex]]
[[Category: Protein-dna interface]]
[[Category: Protein-dna interface]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:01:03 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 21:09:44 2008''

Revision as of 18:09, 30 June 2008

Image:1cqt.png

Template:STRUCTURE 1cqt

CRYSTAL STRUCTURE OF A TERNARY COMPLEX CONTAINING AN OCA-B PEPTIDE, THE OCT-1 POU DOMAIN, AND AN OCTAMER ELEMENT

Template:ABSTRACT PUBMED 10541551

About this Structure

1CQT is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structure of an OCA-B peptide bound to an Oct-1 POU domain/octamer DNA complex: specific recognition of a protein-DNA interface., Chasman D, Cepek K, Sharp PA, Pabo CO, Genes Dev. 1999 Oct 15;13(20):2650-7. PMID:10541551

Page seeded by OCA on Mon Jun 30 21:09:44 2008

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