An incoming nucleotide imposes an anti to syn conformational change on the templating purine in the human DNA polymerase-iota active site.
Nair, D.T., Johnson, R.E., Prakash, L., Prakash, S., Aggarwal, A.K.(2006) Structure 14: 749-755
- PubMed: 16615915 
- DOI: 10.1016/j.str.2006.01.010
- Primary Citation of Related Structures:  
2FLL, 2FLN, 2FLP - PubMed Abstract: 
Substrate-induced conformational change of the protein is the linchpin of enzymatic reactions. Replicative DNA polymerases, for example, convert from an open to a closed conformation in response to dNTP binding. Human DNA polymerase-iota (hPoliota), a member of the Y family of DNA polymerases, differs strikingly from other polymerases in its much higher proficiency and fidelity for nucleotide incorporation opposite template purines than opposite template pyrimidines ...