Isolation of citroylformic acid-gamma-lactone from a commerical batch of oxaloacetic acid: inhibition of apotyrosine aminotransferase conversion to holoenzyme by this substance.
D015107:4-Butyrolactone / Q000031:analogs & derivatives; D000818:Animals; D001051:Apoenzymes / Q000037:antagonists & inhibitors*; D001059:Apoproteins / Q000037:antagonists & inhibitors*; D002951:Citrates / Q000302:isolation & purification* / Q000494:pharmacology; D004789:Enzyme Activation / Q000187:drug effects; D007783:Lactones / Q000302:isolation & purification / Q000494:pharmacology; D008099:Liver / Q000201:enzymology; D010071:Oxaloacetates / Q000032:analysis / Q000592:standards; D051381:Rats; D013329:Structure-Activity Relationship; D014444:Tyrosine Transaminase / Q000037:antagonists & inhibitors*
D001051:Apoenzymes; D001059:Apoproteins; D002951:Citrates; D007783:Lactones; D010071:Oxaloacetates; C016309:citroylformic acid-gamma-lactone; D014444:Tyrosine Transaminase; D015107:4-Butyrolactone