<molecular biology, protein> A small proteoglycan, 90-140 kD, of the extracellular matrix, so called because it decorates collagen fibres.

The core protein has a mass of approximately 42 kD and is very similar to the core protein of biglycan and fibromodulin. All three have highly conserved sequences containing 10 internal homologous repeats of approximately 25 amino acids with leucine rich motifs.

Decorin has one glycosaminoglycan chain, either chondroitin sulphate or dermatan sulphate and N linked oligosaccharides.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)