In enzymology, an arginine N-succinyltransferase () is an enzyme that catalyzes the chemical reaction succinyl-CoA + L-arginine CoA + N2-succinyl-L-arginine Thus, the two substrates of this enzyme are succinyl-CoA and L-arginine, whereas its two products are CoA and N2-succinyl-L-arginine. This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups. The systematic name of this enzyme class is succinyl-CoA:L-arginine N2-succinyltransferase. Other names in common use include arginine succinyltransferase, AstA, arginine and ornithine N2-succinyltransferase, AOST, AST, and succinyl-CoA:L-arginine 2-N-succinyltransferase. This enzyme participates in arginine and proline metabolism. Structural studies As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code . References Further reading EC 2.3.1 Enzymes of known structure