4EFN

Crystal structure of H-Ras Q61L in complex with GppNHp (state 1)

• PDB DOI:  https://doi.org/10.2210/pdb4EFN/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2012-03-30 Released: 2012-05-16 
• Deposition Author(s): Muraoka, S., Shima, F., Araki, M., Inoue, T., Yoshimoto, A., Ijiri, Y., Seki, N., Tamura, A., Kumasaka, T., Yamamoto, M., Kataoka, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.237 
• R-Value Work: 0.183 
• R-Value Observed: 0.185 

Literature

Crystal structures of the state 1 conformations of the GTP-bound H-Ras protein and its oncogenic G12V and Q61L mutants

Muraoka, S., Shima, F., Araki, M., Inoue, T., Yoshimoto, A., Ijiri, Y., Seki, N., Tamura, A., Kumasaka, T., Yamamoto, M., Kataoka, T.

(2012) FEBS Lett 586: 1715-1718

• PubMed: 22584058 
• DOI: https://doi.org/10.1016/j.febslet.2012.04.058
• Primary Citation of Related Structures:  
  4EFL, 4EFM, 4EFN


• PubMed Abstract: 
  

GTP-bound Ras adopts two interconverting conformations, "inactive" state 1 and "active" state 2. However, the tertiary structure of wild-type (WT) state 1 remains unsolved. Here we solve the state 1 crystal structures of H-Ras WT together with its oncogenic G12V and Q61L mutants. They assume open structures characterized by impaired interactions of both Thr-35 in switch I and Gly-60 in switch II with the γ-phosphate of GTP and possess two surface pockets of mutually different shapes unseen in state 2, a potential target for selective inhibitor development. Furthermore, they provide a structural basis for the low GTPase activity of state 1.

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Organizational Affiliation: 

Division of Molecular Biology, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 19.82 kDa 
• Atom Count: 1,443 
• Modelled Residue Count: 166 
• Deposited Residue Count: 171 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GTPase HRas	A	171	Homo sapiens	Mutation(s): 1  Gene Names: HRAS, HRAS1 EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P01112 (Homo sapiens) Explore P01112  Go to UniProtKB:  P01112
PHAROS:  P01112

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GNP	B [auth A]	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER C10 H17 N6 O13 P3 UQABYHGXWYXDTK-UUOKFMHZSA-N
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.237 
• R-Value Work: 0.183 
• R-Value Observed: 0.185 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 34.782	α = 90
b = 82.006	β = 90
c = 121.251	γ = 90

Software Package:

Software Name	Purpose
BSS	data collection
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-05-16 
Deposition Author(s): Muraoka, S., Shima, F., Araki, M., Inoue, T., Yoshimoto, A., Ijiri, Y., Seki, N., Tamura, A., Kumasaka, T., Yamamoto, M., Kataoka, T.

Revision History  

• Version 1.0: 2012-05-16
  Type: Initial release
  
• Version 1.1: 2014-03-12
  Changes: Database references