A synthetic peptide corresponding to a sequence at the C-terminus of Human Apoptosis inhibitor 5(487-504aa KYSSNLGNFNYERSLQGK)(b), different from the related Mouse sequence by one amino acid.
Many growth factors and cytokines act as cellular survival factors by preventing programmed cell death(apoptosis). Apoptosis inhibitor 5(API5) is an antiapoptotic factor which may have a role in protein assembly. The API5 gene to chromosome 11p12 based on an alignment of the API5 sequence with the genomic sequence It is a critical determinant of E2F1-induced apoptosis, acting downstream of E2F to suppress E2F-dependent apoptosis without generally blocking E2F-dependent transcription.