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. 2001 Apr 15;355(Pt 2):489–497. doi: 10.1042/0264-6021:3550489

Identification, characterization and leucocyte expression of Siglec-10, a novel human sialic acid-binding receptor.

J Munday 1, S Kerr 1, J Ni 1, A L Cornish 1, J Q Zhang 1, G Nicoll 1, H Floyd 1, M G Mattei 1, P Moore 1, D Liu 1, P R Crocker 1
PMCID: PMC1221762  PMID: 11284738

Abstract

Here we characterize Siglec-10 as a new member of the Siglec family of sialic acid-binding Ig-like lectins. A full-length cDNA was isolated from a human spleen library and the corresponding gene identified. Siglec-10 is predicted to contain five extracellular Ig-like domains and a cytoplasmic tail containing three putative tyrosine-based signalling motifs. Siglec-10 exhibited a high degree of sequence similarity to CD33-related Siglecs and mapped to the same region, on chromosome 19q13.3. The expressed protein was able to mediate sialic acid-dependent binding to human erythrocytes and soluble sialoglycoconjugates. Using specific antibodies, Siglec-10 was detected on subsets of human leucocytes including eosinophils, monocytes and a minor population of natural killer-like cells. The molecular properties and expression pattern suggest that Siglec-10 may function as an inhibitory receptor within the innate immune system.

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Selected References

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