Human p70S6Kb1, also known as ribosomal protein S6 kinase, 70 kDa, polypeptide 1 (RPS6KB1), GenBank Accession No. NM_003161, amino acid 1-421 with N-terminal GST tag, MW=74 kDa, expressed in a Baculovirus infected Sf9 cell expression system.
host species: Sf9 cells
Host species: Sf9 cells
Specific activity: 2 pmol/min/ug
Background
p70S6K is responsible for the phosphorylation of 40S ribosomal protein S6 and is ubiquitously expressed in human adult tissues. p70S6K is activated by serum stimulation and this activation is inhibited by wortmannin and rapamycin. p70S6k activity undergoes changes in the cell cycle and increases 20-fold in G1 cells released from G0. p70S6K activation requires sequential phosphorylations at proline-directed residues in the putative autoinhibitory pseudosubstrate domain, as well as threonine 389 a site phosphorylated by phosphoinositide-dependent kinase 1 (PDK-1).
Immunogen Region
1-421
Tag
N-terminal GST-tag
Formulation
25 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.05% Tween-20, 30% glycerol, and 3 mM DTT.
Species
Human
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling
Notes
Enzyme reaction is conducted in a buffer containing 50 mM HEPES (pH 7.5), 10 mM MgCl2, 1 mM EGTA, 200 uM ATP, 0.01% Brij-35 and 2 uM substrate (SER/THR 7, Invitrogen) at room temperature for 1 hour.
Avoid freeze/thaw cycles.
GenBank
NM_003161
Mw(kda)
74 kDa
Synonyms
RPS6KB1, p70S6K, Ribosomal S6 kinase, S6K, STK14A
Uniprot
P23443
Shipping Temperature
-80°C (dry ice)
Format
Aqueous buffer solution
Storage
At least 6 months at -80°C.
Reference
1. Di Paolo S. et al., Am. J. Kidney Dis. 49 (3), 462-470 (2007). 2. Fang C.X. et al., J. Exp. Neurol. 203 (1), 196-204 (2007).