Figure 1From: Purification and preliminary crystallization of alanine racemase from Streptococcus pneumoniaeClustalW multiple sequence alignment of alanine racemases from S. pneumoniae (SP), P. aeruginosa DadX (PA) and M. tuberculosis (MT). The conserved pyridoxal 5'-phosphate binding site is boxed. An asterisk (*) is used to indicate the two catalytic residues, K40 and Y263. Arrows indicate eight conserved amino acid residues constituting the entryway to the active site [11].Back to article page