regulates regulates glycoprotein metabolic process regulation of protein metabolic process biological regulation regulation of glycoprotein metabolic process Any process that modulates the frequency, rate or extent of glycoprotein metabolic process. GO:1903018 2014-05-14T18:44:19Z biological_process human serum amyloid P component (SAP) P02743 inhibits viral neuraminidase, NA (exo-alpha-sialidase activity) and thus the metabolism of glycoproteins, demonstrated in Figure 4A PMID:23544079, (IDA), the negative regulation term would be applied to this protein regulation of glycoprotein metabolism