- Identification and chromosomal assignment of USP1, a novel gene encoding a human ubiquitin-specific protease. Fujiwara, T., Saito, A., Suzuki, M., Shinomiya, H., Suzuki, T., Takahashi, E., Tanigami, A., Ichiyama, A., Chung, C.H., Nakamura, Y., Tanaka, K. Genomics (1998)