glycine hydroxymethyltransferase activity L-serine hydroxymethyltransferase activity serine transhydroxymethylase activity Reactome:REACT_77050 Reactome:REACT_105838 Reactome:REACT_110780 Reactome:REACT_114385 Reactome:REACT_81468 Reactome:REACT_80412 Reactome:REACT_89705 Reactome:REACT_112714 Reactome:REACT_86594 Reactome:REACT_88214 Reactome:REACT_93885 allothreonine aldolase activity Reactome:REACT_90410 Reactome:REACT_100551 Reactome:REACT_90130 Reactome:REACT_95373 Reactome:REACT_78152 Reactome:REACT_82542 Reactome:REACT_115121 Reactome:REACT_113467 Reactome:REACT_113302 Reactome:REACT_11108 Reactome:REACT_80167 Reactome:REACT_1345 Reactome:REACT_114305 Reactome:REACT_109080 Reactome:REACT_95737 Reactome:REACT_91337 Reactome:REACT_33927 Reactome:REACT_110666 serine hydroxymethyltransferase activity Reactome:REACT_91776 Reactome:REACT_103730 Reactome:REACT_104026 Reactome:REACT_108889 serine aldolase activity GO:0004372 MetaCyc:GLYOHMETRANS-RXN Reactome:REACT_114244 Reactome:REACT_31591 Reactome:REACT_34223 Reactome:REACT_95280 Reactome:REACT_88519 Reactome:REACT_11159 Reactome:REACT_33932 Reactome:REACT_110712 RHEA:15484 Reactome:REACT_30943 Reactome:REACT_111007 Reactome:REACT_101143 Catalysis of the reaction: 5,10-methylenetetrahydrofolate + glycine + H2O = tetrahydrofolate + L-serine. 5,10-methylenetetrahydrofolate:glycine hydroxymethyltransferase activity EC:2.1.2.1 Reactome:REACT_93345 Reactome:REACT_106938 Reactome:REACT_110497 serine hydroxymethylase activity Reactome:REACT_31482 Reactome:REACT_31564 Reactome:REACT_114576 Reactome:REACT_99194 Reactome:REACT_112625 Reactome:REACT_77924 Reactome:REACT_84260 Reactome:REACT_92924 Reactome:REACT_106100 molecular_function Reactome:REACT_97896 hydroxymethyl-, formyl- and related transferase activity