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Aminoglycoside antibiotic resistance through ribosomal RNA methylation


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  • Product Description

In antibiotic producing bacteria two 16S rRNA methyltransferase families (MT) provide resistance against self-intoxication: Kam MT (m1A1408) and Kgm MT (m7G1405). Both these MT have their homologues in pathogenic bacteria, Arm and Pam MT families, respectively. These MT act at nucleotides in antibiotic binding site and methyl group addition sterically blocks antibiotic binding. Studies on Sgm from M. zionensis provided some initial insights on Kgm MT using sequence conservation and homology modelling. Recent structures showed that resistance MT, irrespective of their origin, have the same protein fold. However, corresponding protein sequences do not reflect conservation of the structure indicating that particular protein fold can be achieved with sequences sharing as little as 30% identity. In the same time conservation of the protein structure indicates that structural constraints are important for efficient target nucleotide selection on the 16S rRNA. Future key issue will be to determine the molecular mechanism of target site selection and whether specific features of recognition can be exploited to combat the rise of resistance to clinically useful aminoglycoside antibiotics.

Product Specifications
SKU :COC22990
AuthorMiloje Savic
Number of Pages164
Publishing Year12/19/2010
Edition1 st
Book TypeBiophysics
Country of ManufactureIndia
Product BrandLAP LAMBERT Academic Publishing
Product Packaging InfoBox
In The Box1 Piece
Product First Available On ClickOnCare.com2015-07-28 00:00:00