This domain is found in competence-induced protein A (CinA) present in Thermus thermophiles. CinA is important in the horizontal transfer of genes via competence and may also participate in the pyridine nucleotide cycle, which recycles products forme ...
This domain is found in competence-induced protein A (CinA) present in Thermus thermophiles. CinA is important in the horizontal transfer of genes via competence and may also participate in the pyridine nucleotide cycle, which recycles products formed by non-redox uses of NAD. This domain has a KH-type fold and contains the absolutely conserved Glu-187, which stabilizes the binding of Mg2+ and hence polarizes the P=O bond for hydrolysis. A major feature of the CinA in T. thermophiles structure is the asymmetry in the dimer, which is caused by contact between a KH-type domain on the opposite chain and the bound ADP-ribose. This has the effect of closing the active site, allowing additional recognition of ADP-ribose by residues from the KH-type domain [1].
