PDZ binding kinase (PBK), also known as TOPK (T-LAK cell-originated protein kinase), is a serine/threonine kinase related to the dual specific mitogen-activated protein kinase kinase (MAPKK) family, and has all the characteristic protein kinase subdomains and a C-terminal PDZ-binding T/SXV motif. PBK is expressed in the testis restrictedly expressed in outer cell layer of seminiferous tubules, as well as placenta. PBK may be enrolled in the activation of lymphoid cells and support testicular functions, with a suggested role in the process of spermatogenesis.This mitotic kinase phosphorylates MAP kinase p38 and seems to be active in mitosis. When phosphorylated, PBK forms a protein-protein interaction with tumor suppressor p53 (TP53), leading to TP53 destabilization and attenuation of G2/M checkpoint during doxorubicin-induced DNA damage. The expression level of PBK is thus upregulated in a variety of neoplasms including hematological malignancies.
Product Name:
PDK/PDZ binding kinase/TOPK Recombinant Protein (RPES3240)
Product Code:
RPES3240
Size:
20µg
Species:
Human
Expressed Host:
Baculovirus-Insect Cells
Synonyms:
CT84,HEL164,Nori-3,SPK,TOPK
Accession:
NP_060962.2
Sequence:
Met 1-Val 322
Fusion tag:
C-His
Endotoxin:
<1.0 EU per µg as determined by the LAL method.
Protein Construction:
A DNA sequence encoding the full length of human PBK (NP_060962.2) (Met 1-Val 322) was fused with a polyhistidine tag at the C-terminus.
Purity:
> 80 % as determined by reducing SDS-PAGE.
Mol Mass:
37 kDa
AP Mol Mass:
37 kDa
Formulation:
Lyophilized from sterile PBS, pH 7.4
Shipping:
This product is provided as lyophilized powder which is shipped with ice packs.
Stability and Storage:
Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
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