Chemical Properties
Also available: fractionated dermatan sulfates with Av. Mw 25,000 ± 2,500 and 50,000 ± 5,000 and different Anti-Xa and Anti-IIa activities. Please inquire
Definition
ChEBI: Dermatan sulfate polyanion is the conjugate base of dermatan sulfate, obtained by deprotonation of carboxy and sulfate groups. It is a monocarboxylic acid anion, an organosulfate oxoanion and a polyanionic polymer. It is a conjugate base of a dermatan sulfate.
Brand name
Orgaran (Organon).
General Description
Chondroitin, a glucosaminoglycan (GAG), is a polysaccharide chain of alternating units of N-acetylgalactosamine (GalNAc) and glucuronic acid (GlcA) that can be sulfated on the either or both GalNAc and GlcA units. Chondroitin and its sulfates are frequently attached to proteins to form proteoglycans. Chondroitin sulfate B (Dermatam sulfate) is a component of proteoglycans such as decorin, biglycan and versican. Chondroitin sulfate B is used to study β peptide (1-42) cytotoxicity.
Biochem/physiol Actions
As a large, negatively charged, hydrophilic molecule that is too inflexible to fold into a compact globular structure, chondroitin sulfate molecules form porous hydrated gels, providing mechanical support to tissue and allowing rapid diffusion of water-soluble molecules and migration of cells.
Purification Methods
Dermatan sulfate is purified by digestion with papain and hyaluronidase, and fractionation using aqueous EtOH. [Gifonelli & Roden Biochemical Preparations 12 1 1968.]
