4FSS

Crystal structure of a RAS p21 protein activator (RASA1) from Homo sapiens at 2.25 A resolution

• PDB DOI: https://doi.org/10.2210/pdb4FSS/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-06-27 Released: 2012-07-18 
• Deposition Author(s): Joint Center for Structural Genomics (JCSG), Partnership for T-Cell Biology (TCELL)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.237 
• R-Value Work: 0.213 
• R-Value Observed: 0.214 

Literature

Crystal structure of a RAS p21 protein activator (RASA1) from Homo sapiens at 2.25 A resolution

Joint Center for Structural Genomics (JCSG), Partnership for T-Cell Biology (TCELL)

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 22.38 kDa 
• Atom Count: 1,601 
• Modelled Residue Count: 182 
• Deposited Residue Count: 186 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ras GTPase-activating protein 1	A, B, C	62	Homo sapiens	Mutation(s): 0  Gene Names: BC033015, RASA, RASA1
UniProt & NIH Common Fund Data Resources
Find proteins for P20936 (Homo sapiens) Explore P20936  Go to UniProtKB:  P20936
PHAROS:  P20936 GTEx:  ENSG00000145715

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	D [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
GOL	H [auth C]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CL	E [auth A], F [auth B], G [auth C]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B, C	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.237 
• R-Value Work: 0.213 
• R-Value Observed: 0.214 
• Space Group: P 6₁ 2 2
• Diffraction Data: https://doi.org/10.18430/M34FSS

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 82.22	α = 90
b = 82.22	β = 90
c = 157.212	γ = 120

Software Package:

Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SHELX	phasing
SHARP	phasing
XSCALE	data scaling
BUSTER-TNT	refinement
XDS	data reduction
SHELXD	phasing
BUSTER	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-07-18 
Deposition Author(s): Joint Center for Structural Genomics (JCSG), Partnership for T-Cell Biology (TCELL)

Revision History  

• Version 1.0: 2012-07-18
  Type: Initial release
  
• Version 1.1: 2015-10-21
  Changes: Database references, Structure summary
• Version 1.2: 2017-11-15
  Changes: Refinement description
• Version 1.3: 2023-02-01
  Changes: Database references, Derived calculations