Search Thermo Fisher Scientific
Search Thermo Fisher Scientific
The cystatin superfamily is a well-established family of cysteine protease inhibitors. All true cystatins inhibit cysteine peptidases of the papain family, such as cathepsins, while some also inhibit legumain family enzymes. The CRES (cystatin-related epididymal spermatogenic) protein defines a new subgroup in the family 2 cystatins of the cystatin superfamily. CRES proteins lack two of the three consensus sites necessary for the cystatin inhibition of C1 cysteine proteases. They are also preferentially expressed in postmeiotic germ cells, the proximal caput epididymidis, and anterior pituitary gonadotrophs. Therefore, CRES proteins may perform unique and tissue-specific functions in the reproductive and neuroendocrine systems. As a member of the CRES subfamily, Cystatin 8 is a 142 amino acid protein that is expressed in the proximal caput region of the epididymis, where it performs a specialized role during sperm development and maturation.
100 µL
100 µL
100 µL
100 µL
50 µg
100 µL
Searching for an antibody we don't offer? We make custom antibodies for specific targets, species and applications.
More than 18,000 custom antibodies created so far.
Talk to a specialist nowIf an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
Learn moreGet expert recommendations for common problems or connect directly with an on staff expert for technical assistance related to applications, equipment and general product use.
Contact tech support