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Updated: Jul 29, 2026
13:08
Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass
Published on: August 10, 2017
A SNARE-like protein required for traffic through the Golgi complex
D K Banfield1, M J Lewis, H R Pelham
1MRC Laboratory of Molecular Biology, Cambridge, UK.
Nature
|June 29, 1995
Summary
Researchers identified new yeast proteins involved in the secretory pathway. Sft1p, a protein similar to v-SNAREs, is crucial for transport within the Golgi apparatus, suggesting a single t-SNARE can regulate multiple steps.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- The eukaryotic secretory pathway involves sequential membrane-bound compartments.
- Transport vesicles mediate cargo movement between these compartments.
- Soluble NSF attachment protein receptors (SNAREs) are critical for vesicle targeting and fusion.
Purpose of the Study:
- To identify novel proteins involved in vesicle transport within the secretory pathway.
- To investigate the function of yeast membrane proteins interacting with Sed5p, an ER-Golgi t-SNARE.
Main Methods:
- Genetic interaction studies in yeast.
- Protein structural similarity analysis.
- Functional analysis of identified proteins in intracellular transport.
Main Results:
- Two yeast membrane proteins were identified with genetic interactions with Sed5p.
- Sft1p, one identified protein, is structurally similar to v-SNAREs.
- Sft1p is essential for transport between early and later Golgi compartments.
Conclusions:
- A single t-SNARE (Sed5p) may regulate multiple transport steps in the secretory pathway.
- Sft1p is a candidate SNARE involved in intra-Golgi transport.
- This study provides new insights into the molecular mechanisms of Golgi trafficking.
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