The Rice Mutant esp 2 Greatly Accumulates the Glutelin Precursor and Deletes the Protein Disulfide Isomerase 1

Institute of Genetic Resources, Faculty of Agriculture, Kyushu University, Hakozaki, Fukuoka 812–8581, Japan (Y.T., H.S., T.K.); DuPont Agricultural Experimental Station, 402/4251, Wilmington, Delaware 19880–0402 (S.J.C.); Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164–6340 (T.W.O.); Department of Life Science, Yamaguchi Prefectural University, Sakurabatake, Yamaguchi 753–8502, Japan (M.O.)