- Identification of Schizosaccharomyces pombe gene psk1+, encoding a novel putative serine/threonine protein kinase, whose mutation conferred resistance to phenylarsine oxide. Mukai, H., Miyahara, M., Takanaga, H., Kitagawa, M., Shibata, H., Shimakawa, M., Ono, Y. Gene (1995)