ISDA: 1BF5

Deposition Date 1998-05-27

Release Date 1998-08-12

Last Version Date 2024-11-20

Entry Detail

PDB ID:

1BF5

Keywords:

GENE REGULATION/DNA

Title:

TYROSINE PHOSPHORYLATED STAT-1/DNA COMPLEX

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli BL21

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.90 Å

R-Value Free:

0.29

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

C 2 2 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 1-ALPHA/BETA
Gene (Uniprot):STAT1
Mutagens:PHOSPHORYLATED TYR 701
Chain IDs:C (auth: A)
Chain Length:575
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P42224 Pfam ID:PF01017, PF02864, PF21354, PF00017

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(*AP*CP*AP*GP*TP*TP*TP*CP*CP*CP*GP*TP*AP*AP*AP*TP*G P*C)-3')
Chain IDs:A (auth: B)
Chain Length:18
Number of Molecules:1
Biological Source:Homo sapiens

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
PTR	C	TYR	O-PHOSPHOTYROSINE

Ligand Molecules

Primary Citation

Crystal structure of a tyrosine phosphorylated STAT-1 dimer bound to DNA.

Chen, X, Vinkemeier, U, Zhao, Y, Jeruzalmi, D, Darnell Jr, J.E, Kuriyan, J.Show

Cell(Cambridge,Mass.) 93 827 839 (1998)

PMID: 9630226 DOI: 10.1016/S0092-8674(00)81443-9

Abstact

The crystal structure of the DNA complex of a STAT-1 homodimer has been determined at 2.9 A resolution. STAT-1 utilizes a DNA-binding domain with an immunoglobulin fold, similar to that of NFkappaB and the p53 tumor suppressor protein. The STAT-1 dimer forms a contiguous C-shaped clamp around DNA that is stabilized by reciprocal and highly specific interactions between the SH2 domain of one monomer and the C-terminal segment, phosphorylated on tyrosine, of the other. The phosphotyrosine-binding site of the SH2 domain in each monomer is coupled structurally to the DNA-binding domain, suggesting a potential role for the SH2-phosphotyrosine interaction in the stabilization of DNA interacting elements.

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Protein

Chemical

Disease

Primary Citation of related structures

Abstact

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