Recombinant Proteins

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CRK Human

V-crk Sarcoma Virus CT10 Oncogene Human Recombinant

Recombinant human CRK, expressed in E. coli, is a non-glycosylated polypeptide chain with a His tag at the N-terminus. This 224 amino acid protein (1-204 a.a.) has a molecular weight of 25kDa. Purification is achieved through proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT25448
Source
Escherichia Coli.
Appearance
A sterile, colorless solution.

CRKL Human

V-crk Sarcoma Virus CT10 Oncogene Homolog (Avian)-Like Human Recombinant

CRKL Human Recombinant, a single, non-glycosylated polypeptide chain, is produced in E. coli with a 20 amino acid His tag fused at its N-terminus. This recombinant protein comprises 323 amino acids (1-303 a.a.) and exhibits a molecular mass of 35.9kDa. However, its apparent size on SDS-PAGE might be higher. The purification of CRKL is achieved through proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT25541
Source
Escherichia Coli.
Appearance
The product is a sterile-filtered solution, appearing colorless.
Definition and Classification

V-crk Sarcoma Virus CT10 is a transforming oncoprotein derived from the avian sarcoma virus CT10. It is a fusion of the viral “gag” protein with the SH2 and SH3 domains of the cellular Crk protein . The name “Crk” stands for “CT10 Regulator of Kinase,” highlighting its role in kinase regulation .

Biological Properties

Key Biological Properties: V-crk Sarcoma Virus CT10 encodes a SH2 and SH3 domain-containing adaptor protein . These domains are crucial for its function in signal transduction.

Expression Patterns: The expression of CRKL (v-crk avian sarcoma virus CT10 oncogene homolog-like) is upregulated in multiple types of human cancers, including leukemia .

Tissue Distribution: CRKL is expressed in various tissues, with significant upregulation observed in cancerous tissues .

Biological Functions

Primary Biological Functions: V-crk Sarcoma Virus CT10 plays a critical role in cell signaling by acting as an adaptor protein. It integrates signals from various sources, including growth factors, extracellular matrix molecules, and bacterial pathogens .

Role in Immune Responses: CRKL is involved in immune cell functions, particularly in the activation and inhibitory signaling of T, B, and natural killer (NK) cells .

Pathogen Recognition: CRKL’s role in immune responses suggests its involvement in pathogen recognition and subsequent immune activation .

Modes of Action

Mechanisms with Other Molecules and Cells: V-crk Sarcoma Virus CT10 forms complexes with other proteins through its SH2 and SH3 domains. These complexes are essential for its role in signal transduction .

Binding Partners: CRKL interacts with various proteins, including BCR-ABL and TEL-ABL, leading to the activation of downstream signaling pathways .

Downstream Signaling Cascades: CRKL activates several signaling pathways, including the RAS and JUN kinase pathways, which are crucial for cell proliferation and survival .

Regulatory Mechanisms

Transcriptional Regulation: The expression of CRKL is regulated at the transcriptional level by factors such as ETV6, which can bind to the promoter region of CRKL .

Post-Translational Modifications: CRKL undergoes tyrosine phosphorylation, which is essential for its activation and function in signal transduction .

Applications

Biomedical Research: CRKL is a valuable target in cancer research due to its role in cell signaling and transformation .

Diagnostic Tools: The expression levels of CRKL can serve as biomarkers for certain cancers, aiding in diagnosis and prognosis .

Therapeutic Strategies: Targeting CRKL and its associated pathways offers potential therapeutic strategies for treating cancers and other diseases involving dysregulated signaling .

Role in the Life Cycle

Development: CRKL is involved in various developmental processes, including cell growth and differentiation .

Aging and Disease: Dysregulation of CRKL is associated with aging-related diseases and cancers, highlighting its role in disease progression .

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