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Human synaptotagmin V (SYT5): sequence, genomic structure, and chromosomal location
M Craxton1, A Olsen, M Goedert
1Medical Research Council, Laboratory of Molecular Biology, Cambridge, United Kingdom.
Genomics
|May 15, 1997
Summary
Researchers identified the human synaptotagmin V (SYTV) gene, detailing its sequence, structure, and location on chromosome 19. This study marks the first report of linked synaptotagmin genes.
Area of Science:
- Genetics
- Molecular Biology
- Neuroscience
Background:
- Synaptotagmins are key regulators of neurotransmitter release.
- Understanding synaptotagmin gene organization is crucial for neurological research.
Purpose of the Study:
- To determine the sequence, genomic structure, and chromosomal location of the human synaptotagmin V (SYTV) gene.
- To investigate the physical linkage of SYTV with other synaptotagmin genes.
Main Methods:
- Gene sequencing and analysis of the open reading frame.
- Polymerase Chain Reaction (PCR) analysis of somatic cell hybrid DNA.
- DNA hybridization to arrayed cosmids of the chromosome 19 physical map.
Main Results:
- The human SYTV gene encodes a 386-amino-acid protein, 91% identical to rat Syt V.
- The SYTV gene contains seven introns with potential for alternative splicing.
- Human SYTV is located on chromosome 19q13.4, proximal to the SYTIII gene.
Conclusions:
- The characterization of the human SYTV gene provides insights into synaptotagmin V function.
- The physical linkage of SYTV and SYTIII represents the first reported instance of linked synaptotagmin genes.
- This linkage may have implications for understanding the evolution and regulation of synaptotagmin gene families.