CRYSTAL STRUCTURE OF THE GLYCOPEPTIDE N-METHYLTRANSFERASE MTFA COMPLEXED WITH (S)-ADENOSYL-L-HOMOCYSTEINE (SAH) 3G2P TRANSFERASE, SAM-DEPENDENT METHYLTRANSFERASE, GLYCOPEPTIDE ANTIBIOTICS BIOSYNTHESIS, STRUCTURAL GENOMICS, MONTREAL-KINGSTON BACTERIAL STRUCTURAL GENOMICS INITIATIVE, BSGI