Studies on the assembly of the rat lens capsule. Biosynthesis of a cross-linked collagenous component of high molecular weight.

ABSTRACT: 1. Intact rat lenses in tissue culture synthesize hydroxy[3H]proline-containing polypeptides of apparent mol.wt. approx. 180000, which become assembled into aggregates of higher molecular weight with time. 2. Both the 180000-mol.wt. species and the aggregates are components of the deoxycholate-insoluble base-membrane matrix. 3. Formation of the high-molecular-weight aggregate is accompanied by the biosynthesis of the reducible hydroxylysine-derived cross-link hydroxylysino-5-oxo-norleucine. 4. Hydroxylysino-5-oxonorleucine and dehydrohydroxylysinonorleucine are the major reducible cross-links present in intact foetal and 1-month-old calf lens capsules.

SUBMITTER: Heathcote JG 

PROVIDER: S-EPMC1162086 | biostudies-other | 1980 Aug

REPOSITORIES: biostudies-other