Related Experiment Video
Updated: May 30, 2026
09:25
Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain
Published on: May 21, 2019
Mitochondrial proteins, learning and memory: biochemical specialization of a memory system
R O Solomonia1, N Kunelauri, E Mikautadze
1Institute of Chemical Biology, Ilia State University and I. Beritashvili Institute of Physiology, 14 L Gotua Street, Tbilisi 0160, Republic of Georgia.
Neuroscience
|August 16, 2011
Summary
Amounts of key mitochondrial proteins in the chick brain
Area of Science:
- Neuroscience
- Molecular Biology
- Biochemistry
Background:
- Cytochrome c oxidase is vital for cellular energy production.
- Visual imprinting in chicks is a rapid learning process.
- The left intermediate medial mesopallium (IMM) is implicated in memory formation for visual imprinting.
Purpose of the Study:
- To investigate the regulation of cytochrome c oxidase subunits (CO-I and CO-II) in the chick brain.
- To determine the role of learning and brain region in protein expression.
- To explore the molecular basis of memory storage in the IMM.
Main Methods:
- Quantification of cytochrome c oxidase subunit I (CO-I) and subunit II (CO-II) protein levels.
- Analysis of protein expression in the left IMM and other brain regions.
- Correlation of protein amounts with learning strength in visual imprinting.
Main Results:
- CO-I and CO-II amounts were significantly correlated in the left IMM, independent of learning.
- Learning significantly increased CO-I and CO-II levels specifically in the left IMM.
- Protein expression patterns differed between the left IMM and other brain regions studied.
Conclusions:
- The left IMM shows precocious development of cytochrome c oxidase assembly mechanisms.
- This precocious development supports efficient energy supply for synaptic plasticity during memory formation.
- The left IMM is uniquely poised to function as a rapid memory storage site shortly after hatching.
More Related Videos
Related Concept Videos
01:23Role of Neurotransmitters in Memory
Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is critical for...
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is critical for...
01:26Higher Mental Functions of Brain: Learning and Memory
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...
01:45Mitochondrial Membranes
A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
01:45Mitochondrial Membranes
A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
01:19Translocation of Proteins into the Mitochondria
Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
01:35Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.