Usf1, a suppressor of the circadian Clock mutant, reveals the nature of the DNA-binding of the CLOCK:BMAL1 complex in mice oleh Kazuhiro Shimomura, Vivek Kumar, Nobuya Koike, Tae-Kyung Kim, Jason Chong, Ethan D Buhr, Andrew R Whiteley, Sharon S Low, Chiaki Omura, Deborah Fenner, Joseph R Owens, Marc Richards, Seung-Hee Yoo, Hee-Kyung Hong, Martha H Vitaterna, Joseph Bass, Mathew T Pletcher, Tim Wiltshire, John Hogenesch, Phillip L Lowrey, Joseph S Takahashi