1BC7 image
Deposition Date 1998-05-05
Release Date 1999-01-21
Last Version Date 2024-04-03
Entry Detail
PDB ID:
1BC7
Keywords:
TRANSCRIPTION/DNA
Title:
SERUM RESPONSE FACTOR ACCESSORY PROTEIN 1A (SAP-1)/DNA COMPLEX
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.01 Å
R-Value Free:
0.28
R-Value Work:
0.22
Space Group:
P 1 21 1
1BC7 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:PROTEIN (ETS-DOMAIN PROTEIN)
Gene (Uniprot):ELK4
Chain IDs:C
Chain Length:93
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P28324 Pfam ID:PF00178
Primary Citation
Structures of SAP-1 bound to DNA targets from the E74 and c-fos promoters: insights into DNA sequence discrimination by Ets proteins.
Mol.Cell 2 201 212 (1998)
PMID: 9734357 DOI: 10.1016/S1097-2765(00)80130-6

Abstact

SAP-1 is a member of the Ets transcription factors and cooperates with SRF protein to activate transcription of the c-fos protooncogene. The crystal structures of the conserved ETS domain of SAP-1 bound to DNA sequences from the E74 and c-fos promoters reveal that a set of conserved residues contact a GGA core DNA sequence. Discrimination for sequences outside this core is mediated by DNA contacts from conserved and nonconserved protein residues and sequence-dependent DNA structural properties characteristic of A-form DNA structure. Comparison with the related PU.1/DNA and GABPalpha/beta/DNA complexes provides general insights into DNA discrimination between Ets proteins. Modeling studies of a SAP-1/SRF/DNA complex suggest that SRF may modulate SAP-1 binding to DNA by interacting with its ETS domain.

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Primary Citation of related structures
1BC7