Purity ~80% (SDS-PAGE). HSFY1 is a member of the heat shock factor (HSF) family of transcriptional activators for heat shock proteins. This gene is a candidate gene for azoospermia, since it localizes to a region of chromosome Y that is sometimes deleted in infertile males. The genome has two identical copies of this gene within a palindromic region; this record represents the more centromeric copy. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Source: Recombinant corresponding to aa1-401 from human HSFY1 protein, fused to His-tag at N-terminus, expressed in E.coli. Molecular Weight: ~47.5kD (424aa) Applications: Suitable for use in SDS-PAGE.