In Silico Modeling and Functional Interpretations of Cry1Ab15 Toxin from Bacillus thuringiensis BtB-Hm-16.

The theoretical homology based structural model of Cry1Ab15 δ-endotoxin produced by Bacillus thuringiensis BtB-Hm-16 was predicted using the Cry1Aa template (resolution 2.25?Å). The Cry1Ab15 resembles the template structure by sharing a common three-domain extending conformation structure responsibl...

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Publicado en:BioMed Research International Vol. 2013; pp. 471636 - 471637
Autor principal: Kashyap, Sudhanshu
Formato: Journal Article
Publicado: Wiley-Blackwell 2013
Acceso en línea:Ver este registro en EBSCOhost
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      dt: 2013
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      pub: Wiley-Blackwell
      place: Malden, Massachusetts
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        atl: In Silico Modeling and Functional Interpretations of Cry1Ab15 Toxin from Bacillus thuringiensis BtB-Hm-16.
      aug:
        au: Kashyap, Sudhanshu
        affil: National Bureau of Agriculturally Important Microorganisms (ICAR), Kusmaur, Kaithauli, Maunath Bhanjan, Uttar Pradesh 275101, India.
      sug:
        subj:
          Bacterial Proteins
          Endotoxins
          Proteins
          Molecular Structure
          Amino Acids
          Bacillus
          Computer Simulation
          Genetic Techniques
      ab: The theoretical homology based structural model of Cry1Ab15 δ-endotoxin produced by Bacillus thuringiensis BtB-Hm-16 was predicted using the Cry1Aa template (resolution 2.25?Å). The Cry1Ab15 resembles the template structure by sharing a common three-domain extending conformation structure responsible for pore-forming and specificity determination. The novel structural differences found are the presence of ß0 and a3, and the absence of a7b, ß1a, a10a, a10b, ß12, and a11a while a9 is located spatially downstream. Validation by SUPERPOSE and with the use of PROCHECK program showed folding of 98% of modeled residues in a favourable and stable orientation with a total energy Z-score of -6.56; the constructed model has an RMSD of only 1.15?Å. These increments of 3D structure information will be helpful in the design of domain swapping experiments aimed at improving toxicity and will help in elucidating the common mechanism of toxin action.
      pubtype: Academic Journal
      doctype: Journal Article
      ougenre: Article
    language: English
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