KSR1 recombinant protein

KSR1, Active

Cat. Num. AAA517146

• Gene Names: KSR1; KSR; RSU2
• Applications: Western Blot
• Synonyms: KSR1; Active; KSR; RSU2; KSR1 recombinant protein

• Host: Sf9 insect cells
• Form/Format: Recombinant protein stored in 50mM Tris-HCl, pH7.5, 150mM NaCl, 10mM glutathione, 0.1mM EDTA, 0.25mM DTT, 0.1mM PMSF, 25% glycerol.

• Applicable Applications for KSR1 recombinant protein: Kinase Assay, Western Blot (WB)
• Tag: GST
• Species: Human
• Preparation and Storage: Store product at -70 degree C. For optimal storage, aliquot target into smaller quantities after centrifugation and store at recommended temperature. For most favorable performance, avoid repeated handling and multiple freeze/thaw cycles.

Activity

(Specific Activity: Sample Kinase Activity Plot. For specific information on a given lot, see related technical data sheet.)

SDS-Page

(Purity: Sample Purity Data. For specific information on a given lot, see related technical data sheet.)

Related Product Information for KSR1 recombinant protein

Recombinant human KSR1 (431-end) was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag. The protein accession number is Q8IVT5.
KSR1 or Kinase Suppressor of Ras 1 interacts with various kinases of the Raf/MEK/extracellular signal-regulated kinase pathway to enhance its activation. KSR1 is regulated in response to a specific mode of dimerization of its kinase domain, which is termed the side-to-side dimer, whereas KSR1 also participates in forming side-to-side heterodimers with RAF and this can trigger RAF activation. KSR1 has an essential protective role in the intestinal epithelial cell during inflammation through activation of cell survival pathways (1). KSR1 functions as a scaffold that enhances iNOS activity and is crucial for the pulmonary response to P. aeruginosa infection (2).

Product Categories/Family for KSR1 recombinant protein

Protein Kinases; Angiogenesis; Apoptosis/Autophagy; Cancer; Cardiovascular Disease; ERK/MAPK Pathway; Invasion/Metastasis; Neurobiology; Ser/Thr Kinases

References

1. Yan. et.al: Kinase suppressor of Ras-1 protects intestinal epithelium from cytokine-mediated apoptosis during inflammation. J. Clin. Invest. 114: 1272-1280, 2004.
2. Zhang. et.al: Kinase suppressor of Ras-1 protects against pulmonary Pseudomonas aeruginosa infections. Nature Med. 17: 341-346, 2011.

NCBI and Uniprot Product Information

• NCBI GI #: 75677325
• NCBI GeneID: 8844
• NCBI Accession #: NP_055053.1
• NCBI GenBank Nucleotide #: NM_014238.1
• UniProt Accession #: Q8IVT5; Q13476
• Molecular Weight: 102,032 Da
• NCBI Official Full Name: kinase suppressor of Ras 1
• NCBI Official Synonym Full Names: kinase suppressor of ras 1
• NCBI Official Symbol: KSR1
• NCBI Official Synonym Symbols: KSR; RSU2
• NCBI Protein Information: kinase suppressor of Ras 1
• UniProt Protein Name: Kinase suppressor of Ras 1
• Protein Family: Kinase suppressor of Ras
• UniProt Gene Name: KSR1
• UniProt Synonym Gene Names: KSR
• UniProt Entry Name: KSR1_HUMAN

Uniprot Description

KSR: a serine/threonine kinase of the Raf family with no demonstrated kinase activity. A location-regulated scaffolding protein connecting MEK to RAF. Promotes MEK and RAF phosphorylation and activity through assembly of an activated signaling complex. Interacts with RAF and MAPK/ERK, in a Ras-dependent manner. The binding of 14-3-3 proteins to phosphorylated KSR prevents the membrane localization. In unstimulated cells, the phosphorylated form is bound to a 14-3-3 protein and sequestered in the cytoplasm. Translocates from the cytoplasm to the cell periphery following TNF treatment. When Bad is available, ceramide signaling through the Ras/Raf cascade can lead to apoptosis. Three alternatively-spliced isoforms have been described.

Protein type: Protein kinase, TKL; Protein kinase, Ser/Thr (non-receptor); Kinase, protein; TKL group; RAF family

Chromosomal Location of Human Ortholog: 17q11.2

Cellular Component: endoplasmic reticulum membrane; membrane; endoplasmic reticulum

Molecular Function: protein serine/threonine kinase activity; MAP-kinase scaffold activity; protein binding; mitogen-activated protein kinase kinase binding; metal ion binding; ATP binding; protein kinase activity

Biological Process: positive regulation of MAPKKK cascade; Ras protein signal transduction; protein amino acid phosphorylation