The protein encoded by this gene is a type I membrane protein and member of the immunoglobulin superfamily. It is thought to be involved in the process of myelination. It is a lectin that binds to sialylated glycoconjugates and mediates certain myelin-neuron cell-cell interactions. Two alternatively spliced transcripts encoding different isoforms have been described for this gene.
1B236; Brain neuron cytoplasmic protein 3; GMA; Myelin-associated glycoprotein; S-MAG; S-MAG (C-term.); sialic acid binding Ig-like lectin 4A; Sialic acid-binding Ig-like lectin 4a; sialic acid-binding immunoglobulin-like lectin 4A; SIGLEC-4A; SIGLEC4A
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