ISDA: 1BC8

Deposition Date 1998-05-05

Release Date 1998-12-01

Last Version Date 2024-02-07

Entry Detail

PDB ID:

1BC8

Keywords:

TRANSCRIPTION/DNA

Title:

STRUCTURES OF SAP-1 BOUND TO DNA SEQUENCES FROM THE E74 AND C-FOS PROMOTERS PROVIDE INSIGHTS INTO HOW ETS PROTEINS DISCRIMINATE BETWEEN RELATED DNA TARGETS

Biological Source:

Source Organism(s):

Homo sapiens (Taxon ID: 9606)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.93 Å

R-Value Free:

0.27

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 1 21 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:PROTEIN (SAP-1 ETS DOMAIN)
Gene (Uniprot):ELK4
Chain IDs:C
Chain Length:93
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P28324 Pfam ID:PF00178

Ligand Molecules

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.

Mo, Y, Vaessen, B, Johnston, K, Marmorstein, R.Show

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

Abstact

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