The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity

Autor: Julia Romanova, Maria Filimonova
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: The Scientific World Journal, Vol 2012 (2012)
Druh dokumentu: article
ISSN: 1537-744X
DOI: 10.1100/2012/454176
Popis: Examination of the effects of mononucleotides on Sma nuc endonuclease originated from Gram negative bacterium Serratia marcescens displayed that any mononucleotide produced by Sma nuc during hydrolysis of DNA or RNA may regulate the enzyme activity affecting the RNase activity without pronounced influence on the activity towards DNA. The type of carbohydrate residue in mononucleotides does not affect the regulation. In contrast, the effects depend on the type of bases in nucleotides. AMP or dAMP was classified as a competitive inhibitor of partial type. GMP, UMP, and CMP were found to be uncompetitive inhibitors that suggest a specific site(s) for the nucleotide(s) binding in Sma nuc endonuclease.
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