preferred_name: UDP-N-acetyl-alpha-D-muramoyl-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine + L-alanyl-tRNA(Ala) = UDP-N-acetyl-alpha-D-muramoyl-L-alanyl-gamma-D-glutamyl-N(6)-(L-alanyl)-L-lysyl-D-alanyl-D-alanine + tRNA(Ala) + H(+)