Genomic survey of sequence features for ultraviolet tolerance in haloarchaea (family Halobacteriaceae)

We have investigated the strategy of Halobacterium sp. NRC-1 and other members of the family Halobacteriaceae to survive ultraviolet (UV) irradiation, based on an integrated analysis of various genomic and proteomic features such as dinucleotide composition and distribution of tetranucleotides in th...

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Veröffentlicht in:Genomics (San Diego, Calif.) Calif.), 2007-07, Vol.90 (1), p.103-109
Hauptverfasser: Zhou, Peng, Wen, Ji, Oren, Aharon, Chen, Ming, Wu, Min
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container_title Genomics (San Diego, Calif.)
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creator Zhou, Peng
Wen, Ji
Oren, Aharon
Chen, Ming
Wu, Min
description We have investigated the strategy of Halobacterium sp. NRC-1 and other members of the family Halobacteriaceae to survive ultraviolet (UV) irradiation, based on an integrated analysis of various genomic and proteomic features such as dinucleotide composition and distribution of tetranucleotides in the genome and amino acid composition of the proteins. The low dipyrimidine content may help Halobacterium reduce formation of photoproducts in its genome. The usage of residues susceptible to reactive oxygen species attack is reduced significantly in Halobacterium, which helps the organism to minimize protein damage. We then correlated the expression of the zim gene with the genomic structure to reexamine the importance of the putative mismatch repair pathway proposed previously. Our results showed that Halobacterium sp. NRC-1 and other haloarchaea ( Haloarcula marismortui, Haloquadratum walsbyi) have optimized their genomic and proteomic structures to reduce damage induced by UV irradiation, often present at high levels in habitats where these organisms thrive.
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subjects Amino acid composition
Biological and medical sciences
CTAG pattern
Cytosine - chemistry
Cytosine - radiation effects
Dipyrimidine composition
DNA, Archaeal - chemistry
DNA, Archaeal - radiation effects
Fundamental and applied biological sciences. Psychology
Genes. Genome
Genetics of eukaryotes. Biological and molecular evolution
Genome, Archaeal - genetics
Genomic structure
Haloarcula marismortui
Halobacteriaceae
Halobacteriaceae - genetics
Halobacteriaceae - radiation effects
Halobacterium
Molecular and cellular biology
Molecular genetics
Radiation Tolerance - genetics
Thymine - chemistry
Thymine - radiation effects
Ultraviolet Rays
UV tolerance
title Genomic survey of sequence features for ultraviolet tolerance in haloarchaea (family Halobacteriaceae)
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