The tissue form of chicken type VI collagen

Abstract
We have purified intact type VI collagen from chicken gizzard. The protein was found to consist of a 130 kDa, a 140 kDa and a 180–200 kDa subunit. The 130 kDa and 140 kDa subunits were obtained in equimolar amounts and identified as the α2 (VI) and the α1 (VI) chains, respectively. The third subunit was usually obtained in the form of 3–4 closely related polypeptides, which may represent different processing or modification products of the α3 (VI) chain