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EC Number
Posttranslational Modification
Commentary
Reference
3.4.22.B1
proteolytic modification
the enzyme has a C-terminal propeptide of 1000 Da that contains an endoplasmic reticulum retention signal, KDEL. The KDEL-tail functions to store SH-EP as a transient zymogen in the lumen of the ER, and the C-terminal propeptide is thought to be removed within the ER or immediately after exit from the ER
647652
3.4.22.B1
proteolytic modification
the enzyme is synthesized on membrane-bound ribosomes as an inactive 45000 Da precursor, which is cotranslationally processed to a 43000 Da intermediate through cleavage of the signal sequence. The 43000 Da intermediate of SH-EP is further processed to the 33000 Da mature enzyme via 39000 Da and 36000 Da intermediates
647651
3.4.22.B1
proteolytic modification
the N-terminal post-translational processing of SH-EP is mediated by at least two processing enzymes, designated VmPE-1 and VmPE-2
647650
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