Characterization of recombinant amino-terminal NC4 domain of human collagen IX - Interaction with glycosaminoglycans and cartilage oligomeric matrix protein
The N-terminal NC4 domain of collagen IX is a globular structure projecting away from the surface of the cartilage collagen fibril. Several interactions have been suggested for this domain, reflecting its location and its characteristic high isoelectric point. In an attempt to characterize the NC4 domain in more detail, we set up a prokaryotic expression system to produce the domain. The purified