HCK Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	ICC/IF, WB
Recommend Dilution	WB 1:500 - 1:2000;IF 1:10 - 1:100
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Immunogen	Recombinant protein of human HCK
Formulation	Store at -20C or -80C. Avoid freeze / thaw cycles. Buffer: PBS with 0.02% sodium azide, 50% glycerol, pH7.3
Concentration	lot specific
Purification	Affinity purification
Conjugation	Unconjugated
Storage Condition	Store at -20°C as received.
Predicted Protein Size	57 kDa
Gene Name	HCK proto-oncogene, Src family tyrosine kinase
Database Link	NP_002101 Entrez Gene 3055 Human UniProt ID P08631
Background	Hck (hemopoietic cell kinase) is a protein tyrosine kinase of the Src family prominently expressed in the lymphoid and myeloid lineages of hemopoiesis. It participates in transducing a variety of extracellular signals, which ultimately affect cellular processes including proliferation, differentiation and migration.The well-defined modular structure of Hck comprises a relatively divergent, NH2-terminal "unique" domain, which is subject to post-translational lipid modifications thereby targeting Hck to the plasma membrane. Src homology 3 (SH3) and 2 (SH2) domains, and a tyrosine kinase catalytic domain follow the "unique" domain. The catalytic activity of Hck is regulated, both positively and negatively, by tyrosine phosphorylation of highly conserved tyrosine (Y) residues. Phosphorylation of a single conserved Tyr499 residue in the COOH terminus of Hck by the protein kinase Csk renders Hck inactive as a result of an intramolecular interaction between the phosphorylated tyrosine (pY) residue and its own SH2 domain. Disruption of this interaction, either as a result of dephosphorylation, or substitution of the COOH-terminal regulatory Y residue with phenylalanine (F; e.g., HckY499F), or COOH-terminal truncation mutations as observed in the virally transduced v-Src oncoprotein, results in constitutive activation of Hck. In contrast to phosphorylation of the COOH-terminal regulatory tyrosine residue, autophosphorylation of a tyrosine residue (Tyr388) within the kinase domain of Hck acts to positively regulate its catalytic activity. Thus, activation of Hck requires both disruption of the COOH-terminal regulatory tyrosine-SH2 domain interaction and autophosphorylation of the regulatory tyrosine residue within the kinase domain. The dysfunction or dysregulation of Hck may contribute to the pathogenesis of some human leukemias.
Synonyms	JTK9
Reference Data
Protein Families	Druggable Genome, Protein Kinase
Protein Pathways	Chemokine signaling pathway, Fc gamma R-mediated phagocytosis

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