CD72 molecule | |||||||
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Identifiers | |||||||
Symbol | CD72 | ||||||
NCBI gene | 971 | ||||||
HGNC | 1696 | ||||||
OMIM | 107272 | ||||||
RefSeq | NM_001782 | ||||||
UniProt | P21854 | ||||||
Other data | |||||||
Locus | Chr. 9p | ||||||
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CD72 (Cluster ofDifferentiation72), also known inmurine biology asLyb-2, is a protein active in theimmune system of animals. It consists of two identical halves, each of about 39-43kD, and is a C-typelectin. Its primarily locus of expression isB-cells (from the pro-B through the mature B-cell stage), where it appears to mediate aspects of B-cell -T-cell interaction. It is a ligand forCD5.[1]
CD72 is a regulatory protein on B lymphocytes. The cytoplasmic tail of CD72 contains two potential immunoreceptor tyrosine-based inhibitory motifs, one of which has been shown to recruit the tyrosine phosphatase SHP- 1. These features suggest a negative regulatory role for CD72. CD72 is a nonredundant regulator of B-cell development and a negative regulator of B-cell responsiveness.[2]
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