Phospho-c-Cbl (Tyr774) (R4C5) rabbit mAb Antibody

SKU: orb1946069

Description

The c-Cbl (Casitas B-lineage Lymphoma) proto-oncogene is a ubiquitously expressed cytoplasmic adaptor protein that contains multiple functional domains, including an amino-terminal tyrosine kinase-binding (TKB) domain, a RING finger motif, and a proline-rich region. The TKB recognizes phosphorylated tyrosines on activated receptor tyrosine kinases (RTKs) and on other nonreceptor tyrosine kinases, while the RING finger motif recruits ubiquitin-conjugating enzymes. These two domains are primarily responsible for the ubiquitin ligase activity of c-Cbl and downregulation of RTKs (1). The proline-rich region contains 14-3-3 protein-binding and SH3 domain-binding motifs. c-Cbl is phosphorylated at Y700, Y731, and Y774 by Syk- and Src-family kinases after the stimulation of some integrins and a wide variety of receptors for immunoglobulins, antigens, hormones, growth factors, and cytokines. Phosphorylated Y774 interacts with the SH2 domain of Crk (1,2). The c-Cbl adapter protein is expressed in the cytoplasm in all tissues, with especially high levels of expression in hematopoietic cells (3,4). Through its many functional sites, c-Cbl plays key roles in the positive and negative regulation of vital cell functions, including T Cell Receptor-mediated cellular immune responses. In human cancer tissues, c-Cbl is frequently tyrosine-phosphorylated in a tumor-specific manner (5).

Images & Validation

• Tested Applications: FC, WB
• Dilution Range: 1µg/mL - 0.001µg/mL. It is recommended that the reagent be titrated for optimal performance for each application. See product image legends for additional information.
• Reactivity: Human, Mouse

Key Properties

• Host: Rabbit
• Clonality: Monoclonal
• Isotype: Rabbit IgG1k
• Clone No.: CblY774-R4C5
• Immunogen: A synthetic phospho-peptide corresponding to residues surrounding Tyr774 of human phospho c-Cbl
• Purification: Protein A+G
• Conjugation: Unconjugated

Storage & Handling

• Storage: Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
• Form/Appearance: Liquid
• Buffer/Preservatives: 1X PBS, 0.02% NaN3, 50% Glycerol, 0.1% rAlbumin
• Concentration: 0.5 mg/mL
• Expiration Date: 12 months from date of receipt.
• Disclaimer: For research use only

Alternative Names

E3 ubiquitin-protein ligase CBL, Casitas B-lineage lymphoma proto-oncogene, Proto-oncogene c-Cbl, RING finger protein 55, RING-type E3 ubiquitin transferase, Signal transduction protein CBL, CBL2, RNF55

Flow cytometric analysis of Daudi cells secondary antibody only negative control (blue) or untreated (red) or treated with IFNα + IL-4 + pervanadate (green) using Phospho-c-Cbl (Tyr774) antibody CblY774-R4C5 at 0.01 μg/mL. Cat. #orb1946069.

Western blot analysis of extracts from Ramos or Jurkat cells, imatinib or pervanadate treated using Phospho-c-Cbl (Tyr774) antibody c-CblY774-R4C5 at 0.1 ug/mL, Cat# orb1946069

Western blot analysis of Jurkat cell extract treated with imatinib or with pervanadate using 0.1 μg/mL Phospho-c-Cbl (Tyr774) antibody CblY774-R4C5 Cat. #orb1946069 or Company A antibody at 0.04 μg/mL (manufacturer's recommended concentration) developed using the same exposure.

Quick Database Links

UniProt

P22681