6Q21

MOLECULAR SWITCH FOR SIGNAL TRANSDUCTION: STRUCTURAL DIFFERENCES BETWEEN ACTIVE AND INACTIVE FORMS OF PROTOONCOGENIC RAS PROTEINS

Domain Annotation: SCOP Classification SCOP Database (version: 2.0) Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A	d6q21a_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	cH-p21 Ras protein	human (Homo sapiens ) [TaxId: 9606 ]
B	d6q21b_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	cH-p21 Ras protein	human (Homo sapiens ) [TaxId: 9606 ]
C	d6q21c_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	cH-p21 Ras protein	human (Homo sapiens ) [TaxId: 9606 ]
D	d6q21d_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	cH-p21 Ras protein	human (Homo sapiens ) [TaxId: 9606 ]

Domain Annotation: CATH CATH Database (version 4.2.0) Homepage

Chain	Domain	Class	Architecture	Topology	Homology
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases
D	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Identifier	Description	Comments	Source
A, B, C, D	PF00071	Ras family (Ras)	Ras family	Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop motif with GTP_EFTU, arf and myosin_head. See Pfam:PF00009 Pfam:PF00025, Pfam:PF00063. As regards Rab GTPases, these are important regulators of vesicle formation, motil ...	Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop motif with GTP_EFTU, arf and myosin_head. See Pfam:PF00009 Pfam:PF00025, Pfam:PF00063. As regards Rab GTPases, these are important regulators of vesicle formation, motility and fusion. They share a fold in common with all Ras GTPases: this is a six-stranded beta-sheet surrounded by five alpha-helices [1].	Domain

Gene Product Annotation Gene Product Annotation

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	C-H-RAS P21 PROTEIN CATALYTIC DOMAIN	catalytic activity GTPase activity pyrophosphatase activity hydrolase activity hydrolase activity, acting on acid anhydrides hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides nucleoside-triphosphatase activity binding protein binding protein C-terminus binding protein-containing complex binding	response to radiation response to abiotic stimulus cellular process response to ionizing radiation response to gamma radiation response to stimulus cellular response to stimulus cellular response to abiotic stimulus cellular response to radiation cellular response to ionizing radiation cellular response to gamma radiation cellular response to environmental stimulus cell population proliferation negative regulation of cell population proliferation regulation of cell population proliferation negative regulation of biological process negative regulation of cellular process regulation of biological process regulation of cellular process biological regulation metabolic process negative regulation of metabolic process gene expression regulation of gene expression negative regulation of macromolecule metabolic process negative regulation of gene expression regulation of metabolic process macromolecule metabolic process regulation of macromolecule metabolic process organic substance metabolic process negative regulation of GTPase activity negative regulation of catalytic activity regulation of GTPase activity negative regulation of molecular function regulation of catalytic activity regulation of hydrolase activity negative regulation of hydrolase activity regulation of molecular function positive regulation of cell population proliferation positive regulation of biological process positive regulation of cellular process epithelial cell proliferation regulation of epithelial cell proliferation positive regulation of epithelial cell proliferation positive regulation of catalytic activity positive regulation of GTPase activity positive regulation of molecular function positive regulation of hydrolase activity regulation of phospholipase activity positive regulation of phospholipase activity positive regulation of phospholipase C activity regulation of lipase activity positive regulation of lipase activity regulation of phospholipase C activity cellular component organization cellular component assembly cell projection organization cell projection assembly regulation of cell projection organization positive regulation of cell projection organization ruffle organization cellular component biogenesis regulation of cellular component biogenesis positive regulation of cellular component biogenesis regulation of cellular component organization positive regulation of cellular component organization regulation of cell projection assembly cellular component organization or biogenesis ruffle assembly plasma membrane bounded cell projection assembly regulation of plasma membrane bounded cell projection assembly positive regulation of plasma membrane bounded cell projection assembly regulation of plasma membrane bounded cell projection organization plasma membrane bounded cell projection organization regulation of ruffle assembly positive regulation of ruffle assembly	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol Golgi apparatus endomembrane system organelle membrane-bounded organelle intracellular organelle intracellular membrane-bounded organelle nucleus nucleoplasm membrane-enclosed lumen nuclear lumen organelle lumen intracellular organelle lumen perinuclear region of cytoplasm plasma membrane membrane cell periphery

RCSB PDB is funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.