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April Journal-2009.p65 - Association of Biotechnology and Pharmacy

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Current Trends in <strong>Biotechnology</strong> <strong>and</strong> <strong>Pharmacy</strong><br />

Vol. 3 (2) 210-218, <strong>April</strong> 2009. ISSN 0973-8916<br />

those glycine residues falling in disallowed region<br />

(Fig. 8). The overall results provided the evidences<br />

that the predicted 3-Dimensional structure <strong>of</strong><br />

CtGH39 is acceptable <strong>and</strong> <strong>of</strong> good quality.<br />

Acknowledgments<br />

SA was supported by PhD fellowship<br />

from Indian Institute <strong>of</strong> Technology Guwahati<br />

through Ministry <strong>of</strong> Human Resource <strong>and</strong> Development,<br />

Government <strong>of</strong> India. The research<br />

work in part was supported by a project grant<br />

from Department <strong>of</strong> <strong>Biotechnology</strong>, Ministry <strong>of</strong><br />

Science <strong>and</strong> Technology, New Delhi, India to AG.<br />

Fig. 7. Ramach<strong>and</strong>ran plot analysis <strong>of</strong> CtGH39<br />

using RAMPAGE s<strong>of</strong>tware(24,25). It shows the<br />

various residues falling in favoured allowed <strong>and</strong><br />

disallowed region <strong>and</strong> the Glycine residues (352<br />

residues are in favoured region, 22 in allowed region<br />

<strong>and</strong> 10 in disallowed region) so > 90% residues have<br />

allowed conformations.<br />

215<br />

References<br />

1. Johnson, E.A., Sakajoh, M., Halliwell, G.,<br />

Madia, A. <strong>and</strong> Demain, A.L. (1982).<br />

Saccharification <strong>of</strong> complex cellulosic<br />

substrates by cellulase system from<br />

Clostridium thermocellum. Appl. Environ.<br />

Microbiol. 43, 1125–1132.<br />

2. Carbohydrate active enzymes (CAZY) link<br />

(http://www.cazy.org/fam/acc_GH.html).<br />

3. Henrissat, B. (1991). A classification <strong>of</strong><br />

glycosyl hydrolases based on amino-acid<br />

sequence similarities. Biochem. J., 280, 309-<br />

316.<br />

4. Davies, G. <strong>and</strong> Henrissat, B. (1995).<br />

Structures <strong>and</strong> mechanisms <strong>of</strong> glycosyl<br />

hydrolases. Structure, 3, 853-857.<br />

5. Henrissat, B. <strong>and</strong> Bairoch, A. (1993). New<br />

families in the classification <strong>of</strong> glycosyl<br />

hydrolases based on amino-acid sequence<br />

similarities. Biochem. J., 293, 781-788.<br />

6. Lairson, L.L., Henrissat, B., Davies, G.J.<br />

<strong>and</strong> Withers, S.G. (2008). Glycosyltransferases:<br />

Structures, Functions <strong>and</strong><br />

Mechanisms. Ann. Rev. Biochem., 77,<br />

521-555.<br />

7. Henrissat B. <strong>and</strong> Bairoch A. (1996).<br />

Updating the sequence-based classification<br />

<strong>of</strong> glycosyl hydrolases. Biochem. J., 316,<br />

695-696.<br />

8. Lynd, L.R, Weimer, P.J., van Zyl, W.H. <strong>and</strong><br />

Pretorious, I.S. (2002). Microbial cellulose<br />

utilization: fundamentals <strong>and</strong> biotechnology.<br />

Microbiol. Mol. Biol. Rev., 66, 506-577.<br />

9. Sánchez, R. <strong>and</strong> Sali, A. (2000).<br />

Comparative protein structure modeling:<br />

Introduction <strong>and</strong> practical examples with<br />

MODELLER. In: Protein Structure<br />

Prediction: Methods <strong>and</strong> Protocols. Ed: D.<br />

M. Webster. Humana Press, Totowa, NJ,<br />

97-129.<br />

Homology modeling <strong>of</strong> family 39 glycoside hydrolase

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