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R9894

Sigma-Aldrich

Ras human

Wild type, recombinant, expressed in E. coli, buffered aqueous glycerol solution

Synonym(s):

H-Ras, rH-RAS, WT

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About This Item

MDL number:
UNSPSC Code:
12352202
NACRES:
NA.32

recombinant

expressed in E. coli

Assay

≥80% (SDS-PAGE)

form

buffered aqueous glycerol solution

mol wt

28 kDa

UniProt accession no.

shipped in

dry ice

storage temp.

−70°C

Gene Information

General description

Ras proto-oncogene is a guanine-nucleotide binding protein that couples tyrosine kinase receptor signals to mitogen activated protein (MAP) kinase cascade. It has an important role in cell growth. The Ras gene is localized on human chromosome 11p15.5. Ras is a substrate for farnesyltransferase (FTase) and when farnesylated, it is anchored to the membrane.

Application

Human Ras has been used as a negative control in tubulin overlay assay.

Biochem/physiol Actions

Ras proteins, p21, are guanyl nucleotide binding proteins that play an important role in cellular signal transduction. Ras proteins are regulatory proteins that bind GTP in their active state. A Ras intrinsic GTPase activity hydrolyzes guanosine-5′-triphosphate (GTP) to guanosine diphosphate (GDP) thus inactivating Ras, while activation of Ras requires exchange of the bound GDP with GTP. Inhibition of Ras activity by stimulation of its GTPase activity is enhanced by GTPase activating proteins. Membrane localization of Ras is crucial for its cellular activity. Inhibition of Ras farnesylation is a target for anti-cancer drug development, since abnormally active Ras is present in more than 50% of human cancers.

Packaging

Package size based on protein content

Physical form

Solution in 50% glycerol containing 50 mM Tris (pH 8.0), 5 mM MgCl2, 45 mM NaCl, 1 mM DTT

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Real-time in vitro measurement of intrinsic and Ras GAP-mediated GTP hydrolysi
Shutes A, et al.
Test (2006)
Human Mucin Gene MUC5B, the 10.7-kb Large Central Exon Encodes Various Alternate Subdomains Resulting in a Super-repeat
Jean-Luc D
The Journal of Biological Chemistry (1997)
Slow conformational dynamics of the guanine nucleotide-binding protein Ras complexed with the GTP analogue GTPgammaS.
Spoerner M
FEBS Journal (2007)
Real-time in vitro measurement of intrinsic and Ras GAP-mediated GTP hydrolysi
Shutes A, et al.
Methods in Enzymology (2006)
Inactivation of Ras GTPase-activating proteins promotes unrestrained activity of wild-type Ras in human liver cancer
Calvisi DF, et al.
Journal of Hepatology, 54(2), 311-311 (2011)

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