3.4.21.B26 down decanoyl-Arg-Val-Lys-Arg-chloromethylketone decreases enzyme activity and expression 731111 3.4.21.B26 down decanoyl-Arg-Val-Lys-Arg-chloromethylketone decreases expression of PC5/6A 752449 3.4.21.B26 up the enzyme is up-regulated in the human endometrium specifically at the time of epithelial receptivity 732515