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Citation
Tags
HERO ID
1337651
Reference Type
Journal Article
Title
A new arsenate reductase involved in arsenic detoxification in Anabaena sp. PCC7120
Author(s)
Pandey, S; Shrivastava, AK; Singh, VK; Rai, R; Singh, PK; Rai, S; Rai, LC
Year
2013
Is Peer Reviewed?
Yes
Journal
Functional & Integrative Genomics
ISSN:
1438-793X
EISSN:
1438-7948
Volume
13
Issue
1
Page Numbers
43-55
Language
English
PMID
23086594
DOI
10.1007/s10142-012-0296-x
Web of Science Id
WOS:000316690000005
Abstract
In silico analysis followed by experimental validation leads us to propose that the predicted protein All0195 of Anabaena sp. PCC7120 showing enhanced expression under sodium arsenate (Na(2)HAsO(4)) stress belongs to the thioredoxin superfamily with structural similarity to bacterial arsenate reductase. The All0195 protein demonstrated C-X-TC-X-K, NTSG-X(2)-YR, and D-X(2)-L-X-KRP as functional motifs that show similarity to seven known bacterial arsenate reductase family protein homologs with Cys, Arg, and Pro as conserved residues. In view of physicochemical properties, such as aliphatic index, ratio of Glu + Lys to Gln + His, and secondary structure, it was evident that All0195 was also a thermostable protein. The predicted three-dimensional structure on molecular docking with arsenate oxyanion ([Formula: see text]) revealed its interaction with conserved Cys residue as also known for other bacterial arsenate reductase. In silico derived properties were experimentally attested by cloning and heterologous expression of all0195. Furthermore, this protein functionally complemented the arsenate reductase-deficient sodium arsenate-hypersensitive phenotype of Escherichia coli strainWC3110 (ΔarsC) and depicted arsenate reductase activity on purification. In view of the above properties, All0195 appears to be a new arsenate reductase involved in arsenic detoxification in Anabaena sp. PCC7120.
Keywords
Arsenic; Arsenate reductase; Homology modeling; Complementation
Tags
IRIS
•
Arsenic Hazard ID
1. Initial Lit Search
PubMed
WOS
Considered New
PubMed
Considered New
ToxNet
Considered New
WOS
ToxNet
Excluded
Toxnet Duplicates
ToxNet
Excluded
Toxnet Duplicates
ToxNet
Excluded
Toxnet Duplicates
2. Lit Search Updates through Oct 2015
PubMed
WOS
ToxNet
Considered
4. Considered through Oct 2015
6. Cluster Filter through Oct 2015
7. Other Studies through Oct 2015
Other
•
Arsenic (Inorganic)
1. Literature
PubMed
Lit search updates through Oct 2015
3. Hazard ID Screening
Other potentially supporting studies
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