MF(ALPHA)1

Saccharomyces cerevisiae

Alpha-factor mating pheromone made by alpha cells; interacts with mating type a cells to induce cell cycle arrest and other responses leading to mating; also encoded by MF(ALPHA)2, although MF(ALPHA)1 produces most alpha-factor; binds copper(II) ions

Mf

Drosophila melanogaster

Myofilin (Mf) encodes a structural protein of muscular thick filaments, which may be needed for filament assembly. Alternative splicing of the gene, controlled by the product of salm, produces isoforms of varying size in thoracic muscles.

MF(ALPHA)2

Saccharomyces cerevisiae

Mating pheromone alpha-factor, made by alpha cells; interacts with mating type a cells to induce cell cycle arrest and other responses leading to mating; also encoded by MF(ALPHA)1, which is more highly expressed; binds copper(II) ions

Mdfi

Homo sapiens

This protein is a transcription factor that negatively regulates other myogenic family proteins. Studies of the mouse homolog, I-mf, show that it interferes with myogenic factor function by masking nuclear localization signals and preventing DNA binding. Knockout mouse studies show defects in the formation of vertebrae and ribs that also involve cartilage formation in these structures. [provided by RefSeq, Jul 2008]