Related Experiment Video
Updated: Jun 19, 2026

Visualization of ATP Synthase Dimers in Mitochondria by Electron Cryo-tomography
Published on: September 14, 2014
How ATPases unravel a mystery
Nerea Gallastegui1, Michael Groll
1Center for Integrated Protein Science, Department Chemie, Lehrstuhl für Biochemie, Technische Universität München, Lichtenbergstrasse 4, Garching, Germany.
Abstract:
Principles of intracellular protein degradation remain among the most challenging questions in cell biology. Here, we discuss Wang and colleagues' crystal structure elucidation of the intermediate domain of Mpa, a regulatory particle of Mtb proteasome, the core proteolytic machinery of Mycobacterium tuberculosis.
Insights
Understanding intracellular protein degradation is key in cell biology. This study details the crystal structure of Mpa, a regulatory particle of the Mycobacterium tuberculosis proteasome.
Area of Science:
- Cell Biology
- Structural Biology
- Biochemistry
Background:
- Intracellular protein degradation is a fundamental cellular process.
- The Mycobacterium tuberculosis proteasome is essential for bacterial survival.
- Understanding proteasome structure is crucial for drug development.
Discussion:
- Wang and colleagues determined the crystal structure of the Mpa intermediate domain.
- Mpa is a regulatory particle of the Mtb proteasome.
- This structure provides insights into proteasome regulation.
Key Insights:
- The crystal structure of the Mpa intermediate domain has been elucidated.
- This finding advances our understanding of the Mtb proteasome's regulatory mechanisms.
- Structural data can inform the design of novel antimycobacterial agents.
Outlook:
- Further structural studies of the Mtb proteasome complex are warranted.
- This research may pave the way for new therapeutic strategies against tuberculosis.
- Investigating protein degradation pathways offers broad implications for cell biology.
Related Concept Videos
ATP Synthase: Mechanism
ATP Synthase: Structure
ATP Driven Pumps III: V-type Pumps
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
Allosteric Proteins-ATCase
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis pathway,...
ATP Driven Pumps I: An Overview
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
Hydrolysis of ATP
If one phosphate group is removed, a molecule of ADP—adenosine diphosphate—remains, along with inorganic phosphate. ADP can be further hydrolyzed to AMP—adenosine monophosphate—by the removal of a second...

