Interactions of annexin V with phospholipid monolayers

Annexin-Phospholipid Interactions. Functional Implications

Annexins constitute an evolutionary conserved multigene protein superfamily characterized by their ability to interact with biological membranes in a calcium dependent manner. They are expressed by all living organisms with the exception of certain unicellular organisms. The vertebrate annexin core is composed of four (eight in annexin A6) homologous domains of around 70 amino acids, with the ...

Annexin V, a calcium-dependent phospholipid-binding protein.

828 Introduction Calcium regulates cellular processes by interacting with calcium-binding proteins. Two major families of calcium-binding proteins have been identified: The E-F hand proteins, which include calmodulin, SlOO and calcyclin; and the annexins (see [ l ] for review, and [2] for annexin nomenclature). Both families constitute major pools of calcium-binding activity. They are found in ...

Phospholipid Monolayers

X-ray studies on phospholipid bilayers. V. Interactions with DDT.

The possible interaction of DDT with the lipids dimyristoyl lecithin (DML), dipalmitoylphosphatidylethanolamine (DPPE) and tripalmitin (TP) was studied. The work was carried out on oriented films and crystalline powders of DDT-lipid mixtures at different molar ratios by X-ray diffraction techniques. The diagrams showed only the patterns of pure DDT and that of the corresponding lipid. It is con...

Interaction of heparin with annexin V.

The energetics and kinetics of the interaction of heparin with the Ca2+ and phospholipid binding protein annexin V, was examined and the minimum oligosaccharide sequence within heparin that binds annexin V was identified. Affinity chromatography studies confirmed the Ca2+ dependence of this binding interaction. Analysis of the data obtained from surface plasmon resonance afforded a Kd of approx...