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Structural features of the yeast plasma-membrane H(+)-ATPase
K P Padmanabha1, V Petrov, A Ambesi
1Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA.
Symposia of the Society for Experimental Biology
|January 1, 1994
Summary
Researchers explored the yeast plasma-membrane H(+)-ATPase, a P-family cation transporter. New findings reveal insights into domain interactions and cysteine residue roles, proposing a structural model for this vital enzyme.
Area of Science:
- Biochemistry
- Molecular Biology
- Membrane Transport
Background:
- The yeast plasma-membrane H(+)-ATPase is a crucial P-family cation transporter.
- Understanding its structure is key to elucidating its function in cellular processes.
- Previous research has provided indirect information due to difficulties in direct structural determination.
Purpose of the Study:
- To investigate the physical interactions between different domains of the yeast H(+)-ATPase.
- To determine the role of specific cysteine residues in the enzyme's structure, function, and biogenesis.
- To propose a refined structural model for the yeast H(+)-ATPase.
Main Methods:
- Utilized indirect approaches to study ATPase structure and function.
- Investigated physical interactions between enzyme domains.
- Analyzed the impact of cysteine residues on ATPase properties.
Main Results:
- New data elucidates physical interactions between yeast H(+)-ATPase domains.
- Cysteine residues are shown to play significant roles in ATPase structure, function, and biogenesis.
- These findings contribute to a better understanding of P-family transporter mechanisms.
Conclusions:
- The study provides novel insights into the structural organization and functional regulation of the yeast plasma-membrane H(+)-ATPase.
- A proposed model integrates new findings on domain interactions and cysteine residue roles.
- This research advances the understanding of cation transport mechanisms in P-type ATPases.