Cited by 31Lipid Membrane Structure and BehaviorCellular transport and secretionSphingolipid Metabolism and Signaling

Localization of the Phosphatidylserine-Binding Site of Glyceraldehyde-3-Phosphate Dehydrogenase Responsible for Membrane Fusion

Kaneda, M., Takeuchi, K.-i., Inoue, K., Umeda, M.·1997·Journal of Biochemistry

Abstract

In this study, we demonstrated that glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is a phosphatidylserine (PS)-binding protein and localized the putative PS-binding site involved in the membrane fusion induced by this enzyme. In an attempt to identify the PS-binding proteins, we raised polyclonal antibodies against a 15-amino-acid synthetic peptide (amino acid residues 390-403 of phosphatidylserine decarboxylase), which was shown to bind specifically to PS. One polyclonal antibody, designated aPSD-2, crossreacted with GAPDH, and its binding to GAPDH was inhibited by PS but not by other phospholipids such as phosphatidylethanolamine and phosphatidylinositol. Kinetic analysis of GAPDH binding to phospholipid membranes by measuring surface plasmon resonance showed that GAPDH associated with the phospholipid membrane containing PS rapidly (k[on] =2.8 X 10(4) M(-1) X s[-1]) and dissociated extremely slowly (k[off]=5.9 X 10(-5) s[-1]), giving a low dissociation constant (KD=2.6nM). GAPDH bound less effectively to membranes without PS with a dissociation constants of 0.2 microM. GAPDH-induced vesicle fusion was also inhibited by aPSD-2, suggesting that this antibody recognizes the putative PS-binding site on GAPDH involved in the enzyme-induced membrane fusion. Chemical fragmentation of GAPDH with cyanogen bromide followed by separation and sequence analysis of the reactive peptide resulted in the identification of a single reactive peptide with the sequence of amino acid residue…

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Crossref · 10.1093/oxfordjournals.jbchem.a021886

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Authors
Kaneda, M., Takeuchi, K.-I., Inoue, K., & Umeda, M.
Affiliations
  • Tokyo Metropolitan Institute of Medical Science (JP)
  • The University of Tokyo (JP)
Venue
Journal of Biochemistry
Published
1997-12-01
Volume
122
Issue
6
Pages
1233-1240
ISSN
0021-924X (ISSN-L)
OpenAlex
W2029165599
Cited by
31
References
0
Citations by year
2026: 1 · 2024: 1 · 2021: 3 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 4 · 2016: 1 · 2015: 1 · 2014: 2 · 2012: 3
FWCI
0.36
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Lipid Membrane Structure and Behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sphingolipid Metabolism and Signaling
Keywords
glyceraldehyde-3-phosphate dehydrogenase, phosphatidylserine binding, membrane fusion, phosphatidylserine decarboxylase, polyclonal antibodies, binding site localization, vesicle fusion, synthetic peptides
MeSH terms
Amino Acid Sequence, Antibodies, Binding Sites, Carboxy-Lyases, Cross Reactions, Glyceraldehyde-3-Phosphate Dehydrogenases, Kinetics, Membrane Fusion, Membranes, Molecular Sequence Data, Peptide Fragments, Phosphatidylserines, Phospholipids, Protein Binding

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