Collagenous proteins, types, table

Several collagen types do not form fibrils in tissues (Table 48—2). They are characterized by interruptions of the triple hehx with stretches of protein lacking Gly-X-Y repeat sequences. These non-Gly-X-Y sequences result in areas of globular structure interspersed in the triple hehcal structure. 

The principal proteins of hyaline cartilage (the major type of cartilage) are Usted in Table 48—11. Type II collagen is the principal protein (Figure 48—13), and a number of other minor types of collagen are also present. In... 

Collagen is the major insoluble fibrous protein in the extracellular matrix and in connective tissue 80-90% of the collagen in the body consists of types 1, It and 111 (Table 12.2). The collagen superfamily consists of at least 20 collagen types, with as many as 38 distinct polypeptide chains and more than 15 additional proteins that have collagen-like domains. 

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