The fission yeast homeodomain protein Yox1p binds to MBF and confines MBF-dependent cell-cycle transcription to G1-S via negative feedback.
Aligianni S, Lackner DH, Klier S, Rustici G, Wilhelm BT, Marguerat S, Codlin S, Brazma A, de Bruin RA, Bähler J. PLoS Genet. 2009 Aug; 5(8):e1000626. Epub 2009 Aug 28.