Table 1. Some characteristics of the major proteoglycans identified by Brown et al. [1] in commercial preparations of decorin or biglycan.

Characteristic	PG
	Biglycan	Decorin	Fibromodulin	Aggrecan
SLRP (Yes/No)	Yes	Yes	Yes	No
Mol. weight of core protein* (kDa)	41.7	38.8	43.2	250.4
Types and number of GAG chains	CS/DS (1 chain)	CS/DS (2 chains)	KS (4 chains)	CS/KS (multiple chains)

*Predicted molecular weights are based on the human proteins; CS, chondroitin sulphate; DS, dermatan sulphate; KS, keratan sulphate.