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CD45 (LCA, leukocyte common antigen) is a receptor-type protein tyrosine phosphatase ubiquitously expressed in all nucleated hematopoietic cells, comprising approximately 10% of all surface proteins in lymphocytes. CD45 glycoprotein is crucial in lymphocyte development and antigen signaling, serving as an important regulator of Src-family kinases. CD45 protein exists as multiple isoforms as a result of alternative splicing; these isoforms differ in their extracellular domains, whereas they share identical transmembrane and cytoplasmic domains. These CD45 isoforms differ in their ability to translocate into the glycosphingolipid-enriched membrane domains and their expression depends on cell type and physiological state of the cell. Besides the role in immunoreceptor signaling, CD45 is important in promoting cell survival by modulating integrin-mediated signal transduction pathway and is also involved in DNA fragmentation during apoptosis. CD45RA is an isoform of the CD45 complex and has restricted expression between different subtypes of lymphoid cells.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
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蛋白别名: CD45; CD45 antigen; GP180; L-CA; Leukocyte common antigen; Ly-5; LY5; Lymphocyte antigen 5; lymphocyte common antigen; Receptor-type tyrosine-protein phosphatase C; RT7; T200; T200 glycoprotein
基因别名: B220; Cd45; CD45R; L-CA; loc; Ly-5; Lyt-4; Ptprc; T200
UniProt ID: (Mouse) P06800
Entrez Gene ID: (Mouse) 19264