4Q21	Oncogene Protein	date	Sep 25, 1991
title	Molecular Switch For Signal Transduction: Structural Differe Between Active And Inactive Forms Of Protooncogenic Ras Pro
authors	S.H.Kim
compound		source
Molecule: C-H-Ras P21 Protein Catalytic Domain Chain: A Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system_vector_type: Plasmid
symmetry	Space Group: I 4	R_factor 0.195 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 96.300 96.300 41.370 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.00 Å
ligand	GDP, MG	enzyme
note	4Q21 (Molecule of the Month:pdb148)
related structures	by homologous chain: 1P2T, 721P
Gene Ontology	Chain Function Process Component A
Primary reference	Molecular switch for signal transduction: structural differences between active and inactive forms of protooncogenic ras proteins., Milburn MV, Tong L, deVos AM, Brunger A, Yamaizumi Z, Nishimura S, Kim SH, Science 1990 Feb 23;247(4945):939-45. PMID:2406906

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (35 Kb) [Save to disk] Biological Unit Coordinates (4q21.pdb1.gz) 30 Kb LPC: Ligand-Protein Contacts for 4Q21 CSU: Contacts of Structural Units for 4Q21 Likely Quarternary Molecular Structure file(s) for 4Q21 Retrieve 4Q21 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 4Q21 from S2C, [Save to disk]

View 4Q21 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 4Q21

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 4Q21, from MSDmotif at EBI Genome occurence of 4Q21's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d4q21__, 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: [4q21] [4q21_A] SWISS-PROT database: [P01112] Domain organization of [RASH_HUMAN] by SWISSPFAM Domain found in 4Q21: [RAS ] by SMART

Other resources with information on 4Q21

Community annotation for 4Q21 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Domain movements in 4Q21 from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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