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Sample enzyme activity data. See certificate of analysis for lot specific activity data.
Brk, active
Description:
Brk, active
Trade Name:
Upstate (Millipore)
Qty/Pk:
10 µg
Product Overview:
N-terminal, His6-tagged, recombinant, full-length, human BRK
Key Applications:
Kinase Assay
Usage Statement:
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Entrez Gene Summary:
The protein encoded by this gene is a cytoplasmic nonreceptor protein kinase which may function as an intracellular signal transducer in epithelial tissues. Overexpression of this gene in mammary epithelial cells leads to sensitization of the cells to epidermal growth factor and results in a partially transformed phenotype. Expression of this gene has been detected at low levels in some breast tumors but not in normal breast tissue. The encoded protein has been shown to undergo autophosphorylation.
UniProt Summary:
FUNCTION: SwissProt: Q13882 # Phosphorylates KHDRBS1, KHDRBS2, KHDRBS3 and STAP2/BKS. May function as an intracellular signal transducer in epithelial tissues. Overexpression in mammary cells leads to mitogenically sensitization to EGF, and results in a partially transformed phenotype. Its presence in the nucleus appears to be linked to suppression of tumor progression.
SIZE: 451 amino acids; 51834 Da
SUBUNIT: Interacts with GAP-A.p65 (By similarity). Interacts with KHDRBS1.
SUBCELLULAR LOCATION: Cytoplasm. Nucleus. Note=Colocalizes with KHDRBS1, KHDRBS2 or KHDRBS3, within the nucleus. In secretory epithelial cells from prostate adenocarcinoma, nuclear localization is higher in low-grade and lower in high-grade regions of the tumors.
TISSUE SPECIFICITY: Epithelia-specific. Very high level in colon and high levels in small intestine and prostate, and low levels in some fetal tissues. Expressed at low level in some breast tumors, but not in normal breast. Also found in melanocytes. Not expressed in heart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas.
PTM: Autophosphorylated. The phosphorylation of Tyr-447 may lead to the autoinhibition of the enzyme.
SIMILARITY: SwissProt: Q13882 ## Belongs to the protein kinase superfamily. Tyr protein kinase family. BRK/PTK6/SIK subfamily. & Contains 1 protein kinase domain. & Contains 1 SH2 domain. & Contains 1 SH3 domain.
SIZE: 451 amino acids; 51834 Da
SUBUNIT: Interacts with GAP-A.p65 (By similarity). Interacts with KHDRBS1.
SUBCELLULAR LOCATION: Cytoplasm. Nucleus. Note=Colocalizes with KHDRBS1, KHDRBS2 or KHDRBS3, within the nucleus. In secretory epithelial cells from prostate adenocarcinoma, nuclear localization is higher in low-grade and lower in high-grade regions of the tumors.
TISSUE SPECIFICITY: Epithelia-specific. Very high level in colon and high levels in small intestine and prostate, and low levels in some fetal tissues. Expressed at low level in some breast tumors, but not in normal breast. Also found in melanocytes. Not expressed in heart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas.
PTM: Autophosphorylated. The phosphorylation of Tyr-447 may lead to the autoinhibition of the enzyme.
SIMILARITY: SwissProt: Q13882 ## Belongs to the protein kinase superfamily. Tyr protein kinase family. BRK/PTK6/SIK subfamily. & Contains 1 protein kinase domain. & Contains 1 SH2 domain. & Contains 1 SH3 domain.
Species:
Human
Molecular Weight:
55.3kDa
Quality Assurance:
routinely evaluated by phosphorylation of Poly (Glu4-Tyr)
Brand Family:
Upstate
Source:
expressed by baculovirus in Sf21 insect cells
Protein Target:
BRK
UniProt Number:
Specific Activity:
For Specific Activity data, refer to the Certificate of Analysis for individual lots of this enzyme.
Storage Conditions:
6 months at -70°C
Target Sub-Family:
TK
Promotional Text:
This enzyme is part of KinaseProfiler™, a custom inhibitor selectivity discovery service.
Protein/Isoform Description:
Brk (PTK6) is a Tyr Kinase over-expressed in breast cancer; Brk over-expression correlates with over-expression of Her-2. Brk is activated by EGF. Activated Brk phosphorylates Paxillin, which causes activation of the small G-Protein Rac1, resulting in cytoskeletal changes that promote cell motility and invasion.
Gene Symbol:
- PTK6
- FLJ42088
- BRK
Protein or Enzyme Type:
Kinases
Product Name:
Brk, active
Entrez Gene Number:
Purification Method:
Ni2+/NTA-agarose