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Social work is at an important stage in its development. All professions must be responsive to changing social and economic conditions if they are to meet the needs of those they serve. This series focuses on sound practice and the specific contribution which social workers can make to the wellbeing of our society. The British Association of Social Workers has always been conscious of its role in setting guidelines for practice and in seeking to raise professional standards. The conception of the Practical Social Work series arose from a survey of BASW members to discover where they, the practitioners in social work, felt there was the most need for new literature. The response was overwhelming and enthusiastic, and the result is a carefully planned, coherent series of books. The emphasis is firmly on practice, set in a theoretical framework. The books will inform, stimulate and promote discussion, thus adding to the further development of skills and high professional standards. All the authors are practitioners and teachers of social work representing a wide variety of expenence.

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Detailed structural analysis of protein necessitates investigation at primary, secondary and tertiary levels, respectively. Insight into protein secondary structures pave way for understanding the type of secondary structural elements involved (α-helices, β-strands etc.), the amino acid sequence that encode the secondary structural elements, number of residues, length and, percentage composition of the respective elements in the protein. Here we present a standalone tool entitled “ExSer” which facilitate an automated extraction of the amino acid sequence that encode for the secondary structural regions of a protein from the protein data bank (PDB) file.AvailabilityExSer is freely downloadable from http://code.google.com/p/tool-exser/

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