An unexpected sequence homology between link proteins of the proteoglycan complex and immunoglobulin-like proteins.
The N-terminal sequence (residues 1-101) of trypsin-link protein from cartilage proteoglycan complex is reported: it presents structural homologies with the poly-Ig receptor and immunoglobulin domains.
D000595:Amino Acid Sequence; D000818:Animals; D002356:Cartilage / Q000032:analysis; D002417:Cattle; D016326:Extracellular Matrix Proteins; D006801:Humans; D007136:Immunoglobulins / Q000235:genetics*; D011108:Polymers; D011506:Proteins / Q000235:genetics*; D011509:Proteoglycans / Q000235:genetics*; D011971:Receptors, Immunologic / Q000235:genetics; D012689:Sequence Homology, Nucleic Acid; D000099249:Proteoglycan Link Protein
D016326:Extracellular Matrix Proteins; D007136:Immunoglobulins; D011108:Polymers; D011506:Proteins; D011509:Proteoglycans; D011971:Receptors, Immunologic; D000099249:Proteoglycan Link Protein