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GABARAPL1 (GEC1): original or copycat?
Jaclyn Nicole Le Grand1, Fatima Zahra Chakrama, Stéphanie Seguin-Py
1Université de Franche-Comté, Laboratoire de Biochimie, Besançon, France.
Autophagy
|May 21, 2011
Summary
The GABARAPL1 gene, part of the GABARAP family, has unique functions beyond protein transport. This review explores its roles in cancer and neurodegenerative diseases.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- GABARAPL1 (GABARAP-LIKE 1) is homologous to GABARAP and part of the GABARAP protein family.
- It interacts with GABAA receptors and tubulin, promoting polymerization.
- GABARAP family proteins are involved in autophagy, cell death, proliferation, and tumor progression.
Purpose of the Study:
- To review the specific functions of GABARAPL1.
- To hypothesize about GABARAPL1's roles in cancer and neurodegenerative diseases.
Main Methods:
- Literature review of GABARAPL1 functions.
- Analysis of GABARAPL1's unique regulation and tissue expression.
- Hypothesizing potential roles in disease.
Main Results:
- GABARAPL1 exhibits complex regulation distinct from other GABARAP family members.
- It shows regulated tissue expression, notably high in the central nervous system.
- Its functions extend beyond protein transport to cellular processes like autophagy and proliferation.
Conclusions:
- GABARAPL1 possesses unique characteristics and functions within the GABARAP family.
- Further research into GABARAPL1 is warranted for understanding its implications in cancer and neurodegenerative diseases.
Related Concept Videos
Gene Duplication and Divergence
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
Genome Copying Errors
DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their survival. Therefore, the copying errors are checked and repaired at three levels.
Reproductive Cloning
Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT).
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
Reproductive Cloning
Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT).
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
Gene Families
Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Gene Conversion
Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...

