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Rabbit Anti-CD150/SLAM antibody
SLAM, a novel glycoprotein of 37kDa, designated SLAM (Signaling Lymphocyte Activation Molecule) or CDw150, belongs to the immunoglobulin gene superfamily and is involved in T cell stimulation. SLAM is constitutively expressed on peripheral blood memory T cells, T cell clones, immature thymocytes, and a proportion of B cells, and is rapidly induced on naive T cells after activation. Activated B cells express the membrane bound form of SLAM and the soluble and cytoplasmic isoforms of SLAM, and the expression levels of membrane bound SLAM on B cells are rapidly regulated after activation in vitro. It is suggested that signalling through homophilic SLAM-SLAM binding during B to B and B to T cell interactions enhances the expansion and differentiation of activated B cells. Reports suggest that the extracellular domain of CD150 is the receptor for the measles virus and acts as a co-activator on T cells and B cells.
Function:
High-affinity self-ligand important in bidirectional T-cell to B-cell stimulation. SLAM-induced signal-transduction events in T-lymphocytes are different from those in B-cells. Two modes of SLAM signaling are likely to exist: one in which the inhibitor SH2D1A acts as a negative regulator and another in which protein-tyrosine phosphatase 2C (PTPN11)-dependent signal transduction operates.
Subunit:
nteracts (via cytoplasmic domain) with SH2D1A, and withPTPN11. Interacts with INPP5D/SHIP1. Binds to Measles virus Hprotein and acts as a receptor for this virus.
Subcellular Location:
Cell membrane; Single-pass type I membrane protein. Note=Present on the surface of B-cells and T-cells.
Tissue Specificity:
Constitutively expressed on peripheral blood memory T-cells, T-cell clones, immature thymocytes and a proportion of B-cells, and is rapidly induced on naive T-cells after activation.
Post-translational modifications:
Phosphorylated by FYN.
Similarity:
Contains 1 Ig-like C2-type (immunoglobulin-like) domain.
Contains 1 Ig-like SLVtype (immunoglobulin-like) domain.
SWISS:
Q13291
Gene ID:
6504
Database links:
Entrez Gene: 6504 Human
Entrez Gene: 27218 Mouse
Entrez Gene: 498286 Rat
Omim: 603492 Human
SwissProt: Q13291 Human
SwissProt: Q9QUM4 Mouse
Unigene: 523660 Human
Unigene: 103648 Mouse
Unigene: 215687 Rat
CD150（SLAM）为70kD的表面糖蛋白属于免疫球蛋白基因超家族。SLAM有直接诱导CD4阳性T细胞克隆与活化前T细胞的作用。CD150抗原还可以增强抗原特异性增生与通过T细胞携带的CD4抗原产生细胞因子，特别是对干扰素-γ具有极强的上调节作用。SLAM与自身配体具有极高亲和性，由SLAM同源亲和细胞间的相互作用能够刺激T淋巴细胞产生自身因子。CD150抗原还是风疹病毒细胞受体并且通过白介素10下调节。
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