Hemalatha GR, Rao DS, Guruprasad L. Identification and analysis of novel amino-acid sequence repeats in Bacillus anthracis str. Ames proteome using computational tools.
Comp Funct Genomics 2007:47161. [PMID:
17538688 PMCID:
PMC1876623 DOI:
10.1155/2007/47161]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2006] [Revised: 12/06/2006] [Accepted: 12/09/2006] [Indexed: 11/18/2022] Open
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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