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Crystal structure of aldehyde dehydrogenase 1A1 from mouse
Xiaoyan Zhang1, Zhuqing Ouyang1
1Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, Hubei, 430030, China.
Biochemical and Biophysical Research Communications
|September 9, 2022
Summary
Researchers determined the 2.89 Å resolution crystal structure of mouse Aldehyde dehydrogenase 1A1 (ALDH1A1), revealing unique structural features and expanding the ALDH protein family
Area of Science:
- Biochemistry
- Structural Biology
- Enzymology
Background:
- Aldehyde dehydrogenase 1A1 (ALDH1A1) is a crucial enzyme in aldehyde metabolism.
- Existing structural data for ALDH1A1 is limited to human and sheep species.
- Understanding ALDH1A1 structure is vital for comprehending its diverse metabolic roles.
Purpose of the Study:
- To determine the high-resolution crystal structure of mouse ALDH1A1.
- To analyze and compare the mouse ALDH1A1 structure with homologous proteins from other species.
- To identify unique structural characteristics of mouse ALDH1A1.
Main Methods:
- X-ray crystallography was employed to obtain the mouse ALDH1A1 structure at 2.89 Å resolution.
- Detailed structural analysis and comparison with existing ALDH1A1 structures.
- Structural superimposition to identify differences in quaternary structure and domain orientation.
Main Results:
- The mouse ALDH1A1 structure reveals a tetrameric, asymmetrical arrangement.
- A distinct rotation was observed in the NAD+ binding domain.
- Unique structural features include a novel Ser461-Asp148 contact and specific side-chain orientations of Asn474, Met471, and Phe466.
Conclusions:
- The determined mouse ALDH1A1 structure provides novel insights into the structural diversity within the ALDH family.
- The identified structural variations may influence enzyme activity and substrate specificity.
- This study expands the structural repertoire of ALDH enzymes, aiding future functional and therapeutic investigations.
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