Storage protein composition in seeds of the wild type and glup6 mutant lines. A and B, Seed protein extracts were separated on SDS-PAGE gels (A) and then subjected to immunoblot analysis with anti-glutelin acidic subunit (B). C, The floury endosperm of glup6 mutant lines. Lane 1, the wild type; lane 2, EM939; lane 3, EM1327; lane 4, EM1484. EM939, EM1327, and EM1484 are glup6 allelic mutant lines. [See online article for color version of this figure.]