Preparation and Storage
Background: Siglec-5/CD170
Siglecs are I-type (Ig-type) lectins belonging to the Ig superfamily. They are characterized by an N-terminal, Ig-like V-type domain that mediates sialic acid binding, followed by varying numbers of Ig-like C2-type domains (2 to 17), a single transmembrane region, and a cytoplasmic tail. The siglecs can be broadly classified into two subgroups: Siglecs-1, -2, and -4, and a Siglec-3/CD33-related subgroup (Siglecs-3, and -5 through -13 in primates) defined by sequence similarity and clustered gene localization. They are widely expressed on hematopoietic cells, often in a cell-type-specific manner, and Siglec-4/MAG is a myelin component in Schwann cells and oligodendrocytes. Their ligands, sialic acids, are negatively charged monosaccharides found on cell-surface glycoproteins and glycolipids. Although Siglec functions continue to be defined, most have intracellular immunoreceptor tyrosine-based inhibitory motifs (ITIM), implicating them in the suppression of immunoreceptor signaling. They may also participate in cell/cell interactions or act as receptors for the entry of viral or bacterial pathogens.
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Long Name:
Sialic Acid Binding Ig-like Lectin 5
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Entrez Gene IDs:
8778 (Human)
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Alternate Names:
CD170 antigen; CD170; CD33 antigen-like 2; CD33L2; CD33L2OB binding protein-2; OBBP2; OB-BP2OB-binding protein 2; OBBP2sialic acid-binding Ig-like lectin 5; Obesity-binding protein 2; sialic acid binding Ig-like lectin 5; sialic acid-binding immunoglobulin-like lectin 5; Siglec5; Siglec-5