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Structural properties of the adipocyte lipid binding protein
A Reese-Wagoner1, J Thompson, L Banaszak
1Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA.
Biochimica Et Biophysica Acta
|November 26, 1999
Summary
Adipocyte lipid-binding protein (ALBP) conformational dynamics and ligand transfer are influenced by N-terminal amino acid side chains. Structural analysis reveals key regions for fatty acid binding and protein interactions.
Area of Science:
- Biochemistry
- Molecular Biology
- Structural Biology
Background:
- Adipocyte lipid-binding protein (ALBP) is a key intracellular lipid-binding protein.
- ALBP plays a crucial role in cellular lipid metabolism and transport.
Purpose of the Study:
- To analyze the structural dynamics of ALBP.
- To identify key amino acid residues involved in ligand binding and transfer.
Main Methods:
- Comparative analysis of ALBP sources.
- Analysis of crystallographic data for mouse ALBP.
- Comparison of crystal structures with various hydrophobic ligands.
Main Results:
- One-third of N-terminal amino acid side chains significantly impact ALBP conformational dynamics and ligand transfer.
- The ligand binding cavity and portal region were characterized.
- Specific amino acid side chains critical for cavity formation and fatty acid interactions were identified.
Conclusions:
- The N-terminus of ALBP is critical for its functional dynamics.
- Structural insights into ALBP-fatty acid interactions provide a basis for understanding lipid metabolism.