hydrolase activity | catalytic activity | serine hydrolase activity | protein binding | serine-type endopeptidase activity | serine-type peptidase activity | endopeptidase activity | peptidase activity
positive regulation of immune response | adaptive immune response | proteolysis | complement activation | regulation of immune system process | response to metal ion | defense response | cellular process | regulation of proteolysis | response to inorganic substance | regulation of immune response | regulation of metabolic process | response to stimulus | positive regulation of immune system process | response to stress | regulation of humoral immune response | regulation of protein processing | response to iron ion | cell-cell signaling | adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains | nitrogen compound metabolic process | leukocyte mediated immunity | regulation of acute inflammatory response | regulation of gene expression | regulation of nitrogen compound metabolic process | protein activation cascade | regulation of complement activation | cell communication | humoral immune response | regulation of protein metabolic process | activation of immune response | protein metabolic process | complement activation, classical pathway | metabolic process | immune response | organic substance metabolic process | serine-type endopeptidase activity | serine-type peptidase activity | humoral immune response mediated by circulating immunoglobulin | signaling | endopeptidase activity | B cell mediated immunity | innate immune response | immunoglobulin mediated immune response | immune system process | peptidase activity | regulation of inflammatory response | macromolecule metabolic process
protein-containing complex | collagen trimer | extracellular region | extracellular space | complement component C1 complex