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J Mol Biol. 1999 Apr 23;288(1):141-5.

A turn propensity scale for transmembrane helices.

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  • 1Department of Biochemistry, Stockholm University, Stockholm, S-106 91, Sweden.

Abstract

Using a model protein with a 40 residue hydrophobic transmembrane segment, we have measured the ability of all the 20 naturally occurring amino acids to form a tight turn when placed in the middle of the hydrophobic segment. Turn propensities in a transmembrane helix are found to be markedly different from those of globular proteins, and in most cases correlate closely with the hydrophobicity of the residue. The turn propensity scale may be used to improve current methods for membrane protein topology prediction.

Copyright 1999 Academic Press.

PMID:
10329132
[PubMed - indexed for MEDLINE]
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