Mitochondrial acyltransferase which transfers an acyl group to the N-terminus of glycine and glutamine, although much less efficiently. Can conjugate a multitude of substrates to form a variety of N-acylglycines, thereby detoxify xenobiotics, such as benzoic acid or salicylic acid, and endogenous organic acids, such as isovaleric acid. an acyl-CoA + glycine = an N-acylglycine + CoA + H(+) benzoyl-CoA + glycine = CoA + H(+) + N-benzoylglycine Belongs to the glycine N-acyltransferase family. Intron retention.