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Hydrolases: the correlation between informational structure and the catalytic sites organization
Alexei N Nekrasov1, Alexei A Zinchenko
1Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, ul. Miklukho-Maklaya 16/10, Russia. alexei_nekrasov@mail.ru
Journal of Biomolecular Structure & Dynamics
|February 20, 2008
Summary
A new method identifies protein structure elements critical for enzyme function. These elements, called Elements of Information Structure (ELIS), are key to catalytic activity and protein operation.
Area of Science:
- Biochemistry
- Structural Biology
- Bioinformatics
Background:
- Understanding protein structure-function relationships is crucial in enzymology.
- Identifying specific protein structural elements responsible for catalytic activity remains a challenge.
Purpose of the Study:
- To propose a novel method for identifying protein structure elements linked to catalytic activity.
- To investigate the structural organization of hydrolases using this new approach.
Main Methods:
- The ANalysis of Informational Structure (ANIS) method was employed.
- ANIS analyzes protein amino acid sequences to reveal a hierarchy of Elements of Information Structure (ELIS).
- ELIS are defined as variable-length sites with high structural information density.
Main Results:
- Enzyme catalytic site residues were found to be part of different top-ranking ELIS.
- These ELIS are located in the contact areas of spatial structure clusters and structural blocks.
- Structural blocks corresponding to top-ranking ELIS are vital for protein function.
Conclusions:
- Top-ranking ELIS represent crucial regions for protein functionality.
- Structurally independent regions with determinate mobility are essential for efficient enzymatic reactions.
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