The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity

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 inf...

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Main Authors: Julia Romanova, Maria Filimonova
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1100/2012/454176
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author Julia Romanova
Maria Filimonova
author_facet Julia Romanova
Maria Filimonova
author_sort Julia Romanova
collection DOAJ
description 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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institution Kabale University
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spelling doaj-art-91e25511d74e4769b4a5669d265ab87b2025-02-03T05:43:45ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/454176454176The Effects of Addition of Mononucleotides on Sma nuc Endonuclease ActivityJulia Romanova0Maria Filimonova1Department of Microbiology, Kazan (Volga Region) Federal University, Kremliovskaya Street 18, Kazan 420008, Tatarstan, RussiaDepartment of Microbiology, Kazan (Volga Region) Federal University, Kremliovskaya Street 18, Kazan 420008, Tatarstan, RussiaExamination 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.http://dx.doi.org/10.1100/2012/454176
spellingShingle Julia Romanova
Maria Filimonova
The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity
The Scientific World Journal
title The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity
title_full The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity
title_fullStr The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity
title_full_unstemmed The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity
title_short The Effects of Addition of Mononucleotides on Sma nuc Endonuclease Activity
title_sort effects of addition of mononucleotides on sma nuc endonuclease activity
url http://dx.doi.org/10.1100/2012/454176
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