Table 2.

The vibrational frequencies of major functional groups in free AST, free DNA and DNA-AST complexes.

Free AST, Free DNA and complexes	Observed changes in the vibrational frequency of the functional groups and bases (cm−1)
	OH	C=O	NH	PO−2	Gua	Thy	Ade	Cyt
Free AST	3465–3426	1653	-	-	-	-	-	-
Free DNA	3469–3430	1707, 1649	3469–3430	1237, 1098	1707	1649	1602	1484
DNA-AST	3469–3435	1714, 1647	3469–3435	1236, 1094	1714	1647	1604	1488