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Protein Engineering vol. 16 no. 11 pp. 791-793, 2003
© 2003 Oxford University Press

SMoS: a database of structural motifs of protein superfamilies

Saikat Chakrabarti1, K. Venkatramanan2 and R. Sowdhamini1,3

1National Centre for Biological Sciences (NCBS), Bangalore 560 065, India and 2Centre for Biotechnology, Anna University, Chennai 600025, India

3 To whom correspondence should be addressed. e-mail: mini{at}ncbs.res.in

The Structural Motifs of Superfamilies (SMoS) database provides information about the structural motifs of aligned protein domain superfamilies. Such motifs among structurally aligned multiple members of protein superfamilies are recognized by the conservation of amino acid preference and solvent inaccessibility and are examined for the conservation of other features like secondary structural content, hydrogen bonding, non-polar interaction and residue packing. These motifs, along with their sequence and spatial orientation, represent the conserved core structure of each superfamily and also provide the minimal requirement of sequence and structural information to retain each superfamily fold.

Received April 25, 2003; revised September 9, 2003; accepted September 24, 2003.


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