Improved ε-poly-l-lysine production of an S-(2-aminoethyl)-l-cysteine resistant mutant of Streptomyces albulus : Jun Hiraki1,2∗, Masakazu Hatakeyama1, Hiroshi Morita1, and Yoshikazu Izumi2 (Yokohama Research Center, Chisso Corporation, 5-1 Okawa, Kanazawa-ku, Yokohama 236–86051 and Department of Biotechnology, Faculty of Engineering, Tottori University, Koyama, Tottori 680–09452) Seibutsu-kogaku 76: 487–493. 1998