Identification and Analysis of Novel Amino-Acid Sequence Repeats in <i>Bacillus anthracis</i> str. <i>Ames</i> Proteome Using Computational Tools

Hemalatha, G. R.; Rao, D. Satyanarayana; Guruprasad, L.

doi:https://doi.org/10.1155/2007/47161

International Journal of Genomics

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Research Article | Open Access

Volume 2007 | Article ID 047161 | https://doi.org/10.1155/2007/47161

Identification and Analysis of Novel Amino-Acid Sequence Repeats in Bacillus anthracis str. Ames Proteome Using Computational Tools

G. R. Hemalatha,¹D. Satyanarayana Rao,¹and L. Guruprasad¹

Academic Editor: Stephen Oliver

Received07 Aug 2006

Revised06 Dec 2006

Accepted09 Dec 2006

Published19 Feb 2007

Abstract

We have identified four repeats and ten domains that are novel in proteins encoded by the Bacillus anthracis str. Ames proteome using automated in silico methods. A “repeat” corresponds to a region comprising less than 55-amino-acid residues that occur more than once in the protein sequence and sometimes present in tandem. A “domain” corresponds to a conserved region with greater than 55-amino-acid residues and may be present as single or multiple copies in the protein sequence. These correspond to (1) 57-amino-acid-residue PxV domain, (2) 122-amino-acid-residue FxF domain, (3) 111-amino-acid-residue YEFF domain, (4) 109-amino-acid-residue IMxxH domain, (5) 103-amino-acid-residue VxxT domain, (6) 84-amino-acid-residue ExW domain, (7) 104-amino-acid-residue NTGFIG domain, (8) 36-amino-acid-residue NxGK repeat, (9) 95-amino-acid-residue VYV domain, (10) 75-amino-acid-residue KEWE domain, (11) 59-amino-acid-residue AFL domain, (12) 53-amino-acid-residue RIDVK repeat, (13) (a) 41-amino-acid-residue AGQF repeat and (b) 42-amino-acid-residue GSAL repeat. A repeat or domain type is characterized by specific conserved sequence motifs. We discuss the presence of these repeats and domains in proteins from other genomes and their probable secondary structure.

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Copyright © 2007 G. R. Hemalatha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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