PSME4, like PSME1, 2, and 3, encodes proteasome activator complex subunit 4 also named proteasome activator 200 kDa (PA200). PA200 activates proteasomal cleavage of peptides in an energy-independent manner. After exposure of cells to ionizing radiation, PA200 forms nuclear foci and enhances proteasome activity independent of the stage of cell cycle arrest. PA200 also may be involved in spermatogenesis. The antibody is expected to recognize all the 4 isoforms of PSME4 but appears to mainly detect isoform 2 of 140-kDa.

-25 ~ -15℃保存，收到货之后有效期1年，避免反复冻融。