1YVL | pdb_00001yvl

Structure of Unphosphorylated STAT1

PDB DOI:&nbsphttps://doi.org/10.2210/pdb1YVL/pdb

Classification:&nbspSIGNALING PROTEIN
Organism(s):&nbspHomo sapiens
Expression System:&nbspEscherichia coli
Mutation(s):&nbspNo&nbsp

Deposited:&nbsp2005-02-16&nbspReleased:&nbsp2005-03-22&nbsp
Deposition Author(s):&nbspMao, X., Ren, Z., Parker, G.N., Sondermann, H., Pastorello, M.A., Wang, W., McMurray, J.S., Demeler, B., Darnell Jr., J.E., Chen, X.

Experimental Data Snapshot

Method:&nbspX-RAY DIFFRACTION
Resolution:&nbsp3.00 Å
R-Value Free:&nbsp
0.281 (Depositor), 0.292 (DCC)&nbsp
R-Value Work:&nbsp
0.240 (Depositor), 0.248 (DCC)&nbsp

wwPDB Validation&nbsp 3D Report&nbspFull Report

This is version 1.3 of the entry. See complete&nbsphistory.&nbsp

Literature

Structural bases of unphosphorylated STAT1 association and receptor binding.

Mao, X.,&nbspRen, Z.,&nbspParker, G.N.,&nbspSondermann, H.,&nbspPastorello, M.A.,&nbspWang, W.,&nbspMcMurray, J.S.,&nbspDemeler, B.,&nbspDarnell, J.E.,&nbspChen, X.

(2005) Mol Cell&nbsp17: 761-771

PubMed:&nbsp15780933&nbspSearch on PubMed
DOI:&nbsphttps://doi.org/10.1016/j.molcel.2005.02.021
Primary Citation of Related Structures: &nbsp
1YVL

PubMed Abstract:&nbsp
The crystal structure has been determined at 3.0 A resolution for an unphosphorylated STAT1 (1-683) complexed with a phosphopeptide derived from the alpha chain of interferon gamma (IFNgamma) receptor. Two dimer interfaces are seen, one between the N domains (NDs) (amino acid residues 1-123) and the other between the core fragments (CFs) (residues 132-683). Analyses of the wild-type (wt) and mutant STAT1 proteins by static light scattering, analytical ultracentrifugation, and coimmunoprecipitation suggest that STAT1 is predominantly dimeric prior to activation, and the dimer is mediated by the ND interactions. The connecting region between the ND and the CF is flexible and allows two interconvertable orientations of the CFs, termed "antiparallel" or "parallel," as determined by SH2 domain orientations. Functional implications of these dimer conformations are discussed. Also revealed in this structure is the detailed interaction between STAT1 SH2 domain and its docking site on IFNgamma receptor.

Organizational Affiliation

Department of Biochemistry and Molecular Biology, M.D. Anderson Cancer Center , The University of Texas, Houston, Texas 77030, USA.

Macromolecule Content&nbsp

Total Structure Weight: 161.96 kDa&nbsp
Atom Count: 10,863&nbsp
Modeled Residue Count: 1,315&nbsp
Deposited Residue Count: 1,376&nbsp
Unique protein chains: 2

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Signal transducer and activator of transcription 1-alpha/beta	A, B	683	Homo sapiens	Mutation(s): 0&nbsp Gene Names:&nbspSTAT1
UniProt & NIH Common Fund Data Resources
Find proteins for&nbspP42224&nbsp(Homo sapiens) Explore&nbspP42224&nbsp Go to UniProtKB: &nbspP42224
PHAROS: &nbspP42224 GTEx: &nbspENSG00000115415&nbsp
Entity Groups &nbsp
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P42224
Sequence Annotations Expand
Reference Sequence

Find similar proteins by: Sequence | 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
5-residue peptide	C, D	5	N/A	Mutation(s): 0&nbsp
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands&nbsp1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
AU Query on AU Download Ideal Coordinates CCD File&nbsp SDF format, chain E [auth A] SDF format, chain F [auth B] MOL2 format, chain E [auth A] MOL2 format, chain F [auth B] mmCIF format, chain E [auth A] mmCIF format, chain F [auth B]	E [auth A], F [auth B]	GOLD ION Au ZBKIUFWVEIBQRT-UHFFFAOYSA-N		Interactions Focus chain E [auth A] Focus chain F [auth B] Interactions & Density Focus chain E [auth A] Focus chain F [auth B]

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PTR Query on PTR	C, D	L-PEPTIDE LINKING	C₉ H₁₂ N O₆ P		TYR

Experimental Data & Validation

Experimental Data

Method:&nbspX-RAY DIFFRACTION
Resolution:&nbsp3.00 Å
R-Value Free:&nbsp 0.281 (Depositor), 0.292 (DCC)&nbsp
R-Value Work:&nbsp 0.240 (Depositor), 0.248 (DCC)&nbsp

Space Group:&nbspP 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 102.553	α = 90
b = 102.553	β = 90
c = 646.481	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
SOLVE	phasing
CNS	refinement
HKL-2000	data reduction

Structure Validation

View&nbspFull Validation Report

Entry History&nbsp

Deposition Data

Released Date:&nbsp2005-03-22&nbsp

Deposition Author(s):&nbsp

Revision History (Full details and data files)

Version 1.0: 2005-03-22
Type: Initial release
Version 1.1: 2008-04-30
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance
Version 1.3: 2024-10-30
Changes: Data collection, Database references, Derived calculations, Structure summary