GeneTex
United States (US)

Chk1 (active) recombinant protein

Cat No. GTX65049

Application ELISA, Functional Assay, Apuri, Blocking
Reactivity Human
Species Human
APPLICATION

Application Note

369 nmol phosphate incorporated into CHKtide per minute per mg protein at 30ºC for 15 minutes using a final concentration of 50 uM ATP (0.83 uCi/assay).

Calculated MW

82.0 kDa. ( Note )
PROPERTIES

Form

Liquid

Buffer

50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, 0.1 mM EDTA, 0.1 mM PMSF, 30% glycerol.

Storage

Store at -80ºC. Product is stable for at least 6-12 months.

Concentration

0.1mg/ml(Please refer to the vial label for the specific concentration.)

Antigen Species

Human

Expression System

Baculovirus (Sf9 insect cells)

Purification


Purity was assessed by SDS-PAGE (≥90%) and by HPLC.

Note

For laboratory use only. Not for any clinical, therapeutic, or diagnostic use in humans or animals. Not for animal or human consumption.
TARGET

Synonyms

CHK, CHK1, Serine/threonine-protein kinase Chk1, Serine/threonineprotein kinase Chk1

Background

CHK1 is a 56 kd serine/threonine protein kinase that was originally identified in fission yeast to play a role in activation of the DNA damage checkpoint in the G2 phase of the cell cycle (1). CHK1 appears to function downstream of several of the known fission yeast checkpoint gene products, including that encoded by rad3+, a gene with sequence similarity to the ATM gene mutated in patients with ataxia telangiectasia (2). In vitro, CHK1 binds to and phosphorylates the dual-specificity protein phosphatases Cdc25A, Cdc25B, and Cdc25C, which control cell cycle transitions by dephosphorylating cyclin-dependent kinases (3). CHK1 phosphorylates Cdc25C on serine-216 which creates a binding site for 14-3-3 protein and inhibits function of the phosphatase. Thus, in response to DNA damage, CHK1 phosphorylates and inhibits Cdc25C, thereby preventing the activation of the Cdc2-cyclin B complex and mitotic entry.

Research Area

Package List Price ($)
$ 349