By Topic

Evolution of protein architectures inferred from phylogenomic analysis of CATH

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
S. A. Bukhari ; Dept. of Crop Sci., Univ. of Illinois, Urbana, IL, USA ; G. Caetano-Anollés

Protein architecture refers to similar secondary structural arrangements irrespective of their connectivity. Here we aim to explore the evolution of protein architectures by benchmarking CATH and SCOP annotations. For example, we explore the appearance and diversification of protein architectures such as sandwiches, bundles, barrels, solenoids, ribbons, trefoils, prisms and propellers. Structural phylogenies generated at CATH “A”, “T” and “H” levels of structural abstraction revealed patterns of reductive evolution and three epochs in the evolution of protein world. Although CATH and SCOP differ significantly in their protein domain definitions and in the hierarchical partitioning of fold space, our findings strongly support the fact that both protein structural classification systems classify a protein on a very similar theoretical basis by taking into account their structural, functional and evolutionary roles. The tree of “A” showed that the 3-layer (aba) sandwich (3.40), the orthogonal bundle (1.10) and the alpha-beta complex (3.90) harbor simple secondary structure arrangements that are the most ancient, popular and abundant architectures in the protein world.

Published in:

Bioinformatics and Biomedicine Workshops (BIBMW), 2011 IEEE International Conference on

Date of Conference:

12-15 Nov. 2011