Interaction of Vesl-1L/Homer 1c with syntaxin 13.
Vesl-1S/Homer 1a, reported originally as Vesl/Homer, was isolated as a synaptic plasticity-regulated gene. The expression of Vesl-1S/Homer 1a is regulated during long-term potentiation in the hippocampus. Vesl-1L/Homer 1c, which appears to be formed by a splicing event, shares the N-terminus with Vesl-1S/Homer 1a and also contains additional amino acids at the C-terminus. The short form and the long form of the family members both interact with group 1 metabotropic glutamate receptors (mGluRs). We herein report the identification of syntaxin 13 as a molecule that interacts with Vesl-1L using yeast two-hybrid screening. Syntaxin 13 is a member of the syntaxin family and is regarded as soluble N-ethylmaleimide-sensitive attachment proteins receptors (SNAREs) in the endosomal membranes. The interaction of Vesl-1L and syntaxin 13 was biochemically confirmed by in vitro binding assays. The coexpression of the two proteins in the transfected cells resulted in a colocalization in the intracellular vesicle-like structures. We thus propose that the association of Vesl-1L with syntaxin 13 plays a role in the translocation of Vesl-1L to the intracellular organelles.
Minakami
R
R
School of Health Sciences, Kyushu University, Fukuoka, Japan.
Kato
A
A
Sugiyama
H
H
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001921:Brain / Q000378:metabolism; D019556:COS Cells; D002352:Carrier Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D011992:Endosomes / Q000737:chemistry / Q000378:metabolism; D005455:Fluorescent Antibody Technique; D000072233:Homer Scaffolding Proteins; D008565:Membrane Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D051379:Mice; D008969:Molecular Sequence Data; D009479:Neuropeptides / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D011485:Protein Binding; D050765:Qa-SNARE Proteins; D051381:Rats; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D013379:Substrate Specificity; D014162:Transfection; D020798:Two-Hybrid System Techniques
D002352:Carrier Proteins; D000072233:Homer Scaffolding Proteins; D008565:Membrane Proteins; D009479:Neuropeptides; D050765:Qa-SNARE Proteins; D011993:Recombinant Fusion Proteins