A comparative genomics perspective on the genetic content of the alkaliphilic haloarchaeon Natrialba magadii ATCC 43099T.

BMC Genomics
Shivakumara SiddaramappaJulie A Maupin-Furlow

Abstract

Natrialba magadii is an aerobic chemoorganotrophic member of the Euryarchaeota and is a dual extremophile requiring alkaline conditions and hypersalinity for optimal growth. The genome sequence of Nab. magadii type strain ATCC 43099 was deciphered to obtain a comprehensive insight into the genetic content of this haloarchaeon and to understand the basis of some of the cellular functions necessary for its survival. The genome of Nab. magadii consists of four replicons with a total sequence of 4,443,643 bp and encodes 4,212 putative proteins, some of which contain peptide repeats of various lengths. Comparative genome analyses facilitated the identification of genes encoding putative proteins involved in adaptation to hypersalinity, stress response, glycosylation, and polysaccharide biosynthesis. A proton-driven ATP synthase and a variety of putative cytochromes and other proteins supporting aerobic respiration and electron transfer were encoded by one or more of Nab. magadii replicons. The genome encodes a number of putative proteases/peptidases as well as protein secretion functions. Genes encoding putative transcriptional regulators, basal transcription factors, signal perception/transduction proteins, and chemotaxis/phototaxi...Continue Reading

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Datasets Mentioned

BETA
CP001935
CP001932
CP001933
MJ0601

Methods Mentioned

BETA
PCR
nuclear magnetic resonance
acetylation
deamination
phosphotransferase

Software Mentioned

Artemis Comparison Tool
BLASTN
MAUVE
BLASTP
Rapid Annotation using Subsystems Technology ( RAST )
SIMBAL
Consed
NUCmer
BLAST
magadi

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