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In electrochemistry, a salt bridge or ion bridge is an essential laboratory device discovered over 100 years ago. [ 1 ] It contains an electrolyte solution, typically an inert solution, used to connect the oxidation and reduction half-cells of a galvanic cell (voltaic cell), a type of electrochemical cell .
In chemistry, a salt bridge is a combination of two non-covalent interactions: hydrogen bonding and ionic bonding (Figure 1). Ion pairing is one of the most important noncovalent forces in chemistry, in biological systems, in different materials and in many applications such as ion pair chromatography .
A disulfide bridge found in proteins Salt bridge (protein) (or salt bond), in protein chemistry, is the term used to denote chemical bonds between positively and negatively charged side-chains of proteins; Salt bridge, in chemistry, a laboratory device used to connect the oxidation and reduction half-cells of a galvanic cell (electrochemical cell)
A chaotrope denatures biomolecules by disrupting the shell of hydration around them. This allows positively charged ions to form a salt bridge between the negatively charged silica and the negatively charged DNA backbone in high salt concentration. The DNA can then be washed with high salt and ethanol, and ultimately eluted with low salt.
Example salt bridge network in 2-deoxyribose-5-phosphate aldolase ( ). Interactions are shown as cyan dashed lines. Polar residues are colored green. Polar amino acids aspartate (D), glutamate (E), lysine (K), and arginine (R), are shown here. Salt bridges within TIM barrel pores are thought to contribute to the overall stability of the fold.
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The charge of the resulting ions is a major factor in the strength of ionic bonding, e.g. a salt C + A − is held together by electrostatic forces roughly four times weaker than C 2+ A 2− according to Coulomb's law, where C and A represent a generic cation and anion respectively. The sizes of the ions and the particular packing of the ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
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