title: Short-chain basement membrane collagen. Further characterization and its biosynthesis by F-9 embryonal carcinoma cells.
abstract: The paper describes further characterization of the 55-kDa short-chain collagen from lens capsule. Lens capsules were extracted with 5.5 M guanidine.HCl and the extracted material was fractionated on agarose A-5M followed by high-pressure liquid chromatography (HPLC). By amino acid composition, the major fraction obtained from HPLC was found to be different than type-IV collagen fragments. The 55-kDa short-chain collagen on pepsin digestion produced a 45-kDa pepsin-resistant fragment. The undifferentiated embryonal carcinoma (F-9) cells were found to synthesize increased amounts of 55-kDa short-chain collagen. The identity of this biosynthesized molecule with 55-kDa short-chain collagen from lens capsules was established by immunoprecipitation experiments. The results indicated a close similarity or identical nature of the short-chain collagens from these two sources.
authors.affiliation: Veterans Administration Lakeside Medical Center, Chicago, IL.
authors.forename: S N
authors.initials: SN
authors.lastname: Dixit
mesh_terms: D000818:Animals; D001482:Base Composition; D001485:Basement Membrane / Q000032:analysis; D002851:Chromatography, High Pressure Liquid; D003094:Collagen / Q000032:analysis* / Q000302:isolation & purification; D004591:Electrophoresis, Polyacrylamide Gel; D007903:Lens Capsule, Crystalline / Q000032:analysis*; D007908:Lens, Crystalline / Q000032:analysis*; D012756:Sheep; D014407:Tumor Cells, Cultured / Q000378:metabolism
chemical_list: D003094:Collagen