221P	Oncogene Protein	date	Jun 06, 1991
title	Three-Dimensional Structures Of H-Ras P21 Mutants: Molecular Their Inability To Function As Signal Switch Molecules
authors	U.Krengel, A.Scherer, W.Kabsch, A.Wittinghofer, E.F.Pai
compound		source
Molecule: H-Ras P21 Protein Chain: A Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
symmetry	Space Group: P 32 2 1	R_factor 0.183 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 40.300 40.300 162.200 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	GNP, MG	enzyme
related structures	by homologous chain: 1AGP, 1P2V
Gene Ontology	Chain Function Process Component A
Primary reference	Three-dimensional structures of H-ras p21 mutants: molecular basis for their inability to function as signal switch molecules., Krengel U, Schlichting L, Scherer A, Schumann R, Frech M, John J, Kabsch W, Pai EF, Wittinghofer A, Cell 1990 Aug 10;62(3):539-48. PMID:2199064

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (36 Kb) [Save to disk] Biological Unit Coordinates (221p.pdb1.gz) 63 Kb LPC: Ligand-Protein Contacts for 221P CSU: Contacts of Structural Units for 221P Likely Quarternary Molecular Structure file(s) for 221P Retrieve 221P in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 221P from S2C, [Save to disk]

View 221P in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 221P

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 221P, from MSDmotif at EBI Genome occurence of 221P's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d221p__, region [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [221p] [221p_A] SWISS-PROT database: [P01112] Domain organization of [RASH_HUMAN] by SWISSPFAM Domain found in 221P: [RAS ] by SMART

Other resources with information on 221P

Community annotation for 221P at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Domain movements in 221P from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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