3v4f Summary

pdbe.org/3v4f
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H-Ras PEG 400/CaCl2, ordered off

The structure was published by Holzapfel, G., Buhrman, G., and Mattos, C., in 2012 in a paper entitled "Shift in the Equilibrium between On and Off States of the Allosteric Switch in Ras-GppNHp Affected by Small Molecules and Bulk Solvent Composition." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 1.391 Å and deposited in 2011.

The experimental data on which the structure is based was also deposited.

The PDB entry contains the structure of GTPase HRas. This molecule has the UniProt identifier P20171 (RASH_RAT)search. The sample contained 166 residues which is < 90% of the natural sequence. Out of 166 residues 164 were observed and are deposited in the PDB.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule most likely forms homohexamers.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A GTPase HRas P20171 (1-166) (RASH_RAT)search Rattus norvegicussearch < 90% 166 100%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
P20171 (1 - 166) GTPase HRas Rattus norvegicus

Chain Sequence family (Pfam)
A (P20171) PF00071: Ras familysearch

Chain ID Biological process (GO) Molecular function (GO) Cellular component (GO)
A (P20171) signal transductionsearch GTP catabolic processsearch small GTPase mediated signal transductionsearch GTP bindingsearch membranesearch

Chain InterPro annotation
A Small GTPase superfamilysearch Small GTP-binding protein domainsearch Small GTPase superfamily, Ras typesearch P-loop containing nucleoside triphosphate hydrolasesearch