pathway pertinent to protein folding, sorting, modification, translocation and degradation protein modification pathway PW:0000432 The protein modification pathway exerts a central role in the regulation of protein function and the pathways these functions impinge upon. It is also used to target proteins for degradation. In the more specialized aspect of protein modification in the secretory pathway, it involves the final modification of glycoproteins and glycosaminoglycans as well as processing of proteins to their mature forms. pathway protein modification process