The huge structural diversity of polysaccharides leads to their central roles in food storage and utilization, structure, cell–cell signalling, cell-wall expansion and turnover and viral invasion. Glycosyl hydrolases, enzymes hydrolysing the glycosidic bond in di-, oligoand poly-saccharides, are found in all living organisms. The first X-ray structural determination of an enzyme was of a glycos...

Four platelet proteins are secreted by platelets during the release reaction: platelet factor 4 (PF4).1 $-thromboglobulin ( 9TG). platelet-derived growth factor (PDGF). and fibrinogen. The characteristics of release of these proteins and 14Cserotonin (14C-5HT) were studied and compared with secretion of acid hydrolases as described by others.’ Distinct differences were found between the release...

Four platelet proteins are secreted by platelets during the release reaction: platelet factor 4 (PF4).1 $-thromboglobulin ( 9TG). platelet-derived growth factor (PDGF). and fibrinogen. The characteristics of release of these proteins and 14Cserotonin (14C-5HT) were studied and compared with secretion of acid hydrolases as described by others.’ Distinct differences were found between the release...