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Amino acid sequence and structural comparison of BACE1 and BACE2 using evolutionary trace method.
Hoda Mirsafian1, Adiratna Mat Ripen2, Amir Feisal Merican3
1Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Thescientificworldjournal
|September 26, 2014
Summary
Researchers identified key amino acid differences between beta-amyloid precursor protein cleavage enzyme 1 (BACE1) and BACE2. These differences may explain their distinct functions and guide the development of targeted inhibitors.
Area of Science:
- Biochemistry
- Molecular Biology
- Enzymology
Background:
- Beta-amyloid precursor protein cleavage enzyme 1 (BACE1) and BACE2 are homologous aspartyl proteases with similar structures but different functions.
- Understanding the molecular basis for these functional differences is crucial for therapeutic development.
Purpose of the Study:
- To identify specific amino acid residues responsible for the differing enzymatic properties of BACE1 and BACE2.
- To explore the potential of these residues for designing selective enzyme inhibitors.
Main Methods:
- Comparative analysis of amino acid conservation patterns between BACE1 and BACE2 across mammalian species.
- Utilizing the evolutionary trace (ET) method to pinpoint functionally significant residues.
Main Results:
- Ligand binding sites in BACE1 and BACE2 are largely conserved, consistent with their aspartyl protease family characteristics.
- Four group-specific residues were identified within the ligand binding sites of BACE1 and BACE2.
- These identified residues are hypothesized to be critical for the selective biological functions of BACE1 and BACE2.
Conclusions:
- The identified group-specific residues are potential targets for developing selective BACE1 or BACE2 inhibitors.
- This research provides insights into the structural determinants of BACE enzyme selectivity and function.
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