Amino acid substitutions of conserved residues in the carboxyl-terminal domain of the alpha 1(X) chain of type X collagen occur in two unrelated families with metaphyseal chondrodysplasia type Schmid.

Abstract excerpt

Type X collagen is a homotrimeric, short-chain, nonfibrillar extracellular-matrix component that is specifically and transiently synthesized by hypertrophic chondrocytes at the sites of endochondral ossification. The precise function of type X collagen is not known, but its specific pattern of expression suggests that mutations within the encoding gene (COL10A1) that alter the structure or synthesis of the...

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