TABLE 4 : Amino acid positions mentioned in 48and adjacent amino acid positions that occur in at least 50% of the 44
PURase homologues from the LED (superfamily 13). Position numbers refer
to PudA from Delftia acidovorans , i.e., Uniprot identifier
Q9WX47. Similar amino acid residues occurring in less than 50% of the
sequences are indicated in brackets for comparison. Positions of a
putative substrate binding region are listed as supporting information
for comparison (Table S5 ).