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Cloning and sequence analysis of a cDNA encoding human syntaxin 1A, a polypeptide essential for exocytosis
R Zhang1, A B Maksymowych, L L Simpson
1Department of Medicine, Jefferson Medical College, Philadelphia, PA 19107, USA.
Gene
|July 4, 1995
Summary
Researchers isolated and sequenced human syntaxin 1A, a protein crucial for neurotransmitter release. This finding provides insights into the molecular mechanisms of synaptic transmission.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Syntaxin 1A is a key protein involved in the complex process of neurotransmitter exocytosis.
- Understanding the human form of this protein is essential for studying synaptic function.
Purpose of the Study:
- To isolate and sequence the gene encoding human syntaxin 1A.
- To analyze the deduced protein sequence and compare it to its known counterpart in other species.
Main Methods:
- Construction and screening of a human brain cDNA library.
- DNA sequencing of the isolated clone.
- Bioinformatic analysis of the deduced amino acid sequence.
Main Results:
- Successfully isolated and sequenced a clone encoding human syntaxin 1A.
- The deduced protein consists of 288 amino acids.
- Human syntaxin 1A shares 98.0% amino acid sequence identity with rat syntaxin 1A.
Conclusions:
- Human syntaxin 1A is highly conserved compared to its rat ortholog.
- The isolated sequence provides a valuable resource for further research into the role of syntaxin 1A in human neurotransmission.