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Sequence and intramolecular distance scoring analyses of microbial rhodopsins.


ABSTRACT: Recent accumulation of sequence and structural data, in conjunction with systematical classification into a set of families, has significantly advanced our understanding of diverse and specific protein functions. Analysis and interpretation of protein family data requires comprehensive sequence and structural alignments. Here, we present a simple scheme for analyzing a set of experimental structures of a given protein or family of proteins, using microbial rhodopsins as an example. For a data set comprised of around a dozen highly similar structures to each other (overall pairwise root-mean-squared deviation < 2.3 Å), intramolecular distance scoring analysis yielded valuable information with respect to structural properties, such as differences in the relative variability of transmembrane helices. Furthermore, a comparison with recent results for G protein-coupled receptors demonstrates how the results of the present analysis can be interpreted and effectively utilized for structural characterization of diverse protein families in general.

SUBMITTER: Asano M 

PROVIDER: S-EPMC4792210 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Sequence and intramolecular distance scoring analyses of microbial rhodopsins.

Asano Miki M   Ide Shunta S   Kamata Atsushi A   Takahasi Kiyohiro K   Okada Tetsuji T  

F1000Research 20160212


Recent accumulation of sequence and structural data, in conjunction with systematical classification into a set of families, has significantly advanced our understanding of diverse and specific protein functions. Analysis and interpretation of protein family data requires comprehensive sequence and structural alignments. Here, we present a simple scheme for analyzing a set of experimental structures of a given protein or family of proteins, using microbial rhodopsins as an example. For a data se  ...[more]

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