1OCT image
Deposition Date 1994-05-09
Release Date 1994-08-31
Last Version Date 2024-02-14
Entry Detail
PDB ID:
1OCT
Keywords:
TRANSCRIPTION/DNA
Title:
CRYSTAL STRUCTURE OF THE OCT-1 POU DOMAIN BOUND TO AN OCTAMER SITE: DNA RECOGNITION WITH TETHERED DNA-BINDING MODULES
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.00 Å
R-Value Work:
0.23
R-Value Observed:
0.23
Space Group:
C 2 2 21
1OCT validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:PROTEIN (OCT-1 POU DOMAIN)
Gene (Uniprot):POU2F1
Chain IDs:C
Chain Length:156
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P14859 Pfam ID:PF00157, PF00046
Ligand Molecules
NA
Primary Citation
Crystal structure of the Oct-1 POU domain bound to an octamer site: DNA recognition with tethered DNA-binding modules.
Cell(Cambridge,Mass.) 77 21 32 (1994)
PMID: 8156594 DOI: 10.1016/0092-8674(94)90231-3

Abstact

The structure of an Oct-1 POU domain-octamer DNA complex has been solved at 3.0 A resolution. The POU-specific domain contacts the 5' half of this site (ATGCAAAT), and as predicted from nuclear magnetic resonance studies, the structure, docking, and contacts are remarkably similar to those of the lambda and 434 repressors. The POU homeodomain contacts the 3' half of this site (ATGCAAAT), and the docking is similar to that of the engrailed, MAT alpha 2, and Antennapedia homeodomains. The linker region is not visible and there are no protein-protein contacts between the domains, but overlapping phosphate contacts near the center of the octamer site may favor cooperative binding. This novel arrangement raises important questions about cooperativity in protein-DNA recognition.

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Disease

Primary Citation of related structures
1OCT