Type V collagen is a quantitatively minor fibrillar collagen comprised of different chain
compositions in different tissues. The most widely distributed form, an α1 (V) 2 α2 (V)
heterotrimer, regulates the physical properties of type I/V heterotypic collagen fibrils via
partially processed NH 2-terminal globular sequences. A less characterized α1 (V) α2 (V) α3
(V) heterotrimer has a much more limited distribution of expression and unknown function
(s). We characterized the biosynthetic processing of pro-α1 (V) 2 pro-α2 (V) procollagen …