Definition of zwitterion in English:

zwitterion

noun ˈtsvɪtərʌɪənˈzwɪtərʌɪənˈ(t)swidərˌīən

Chemistry

A molecule or ion having separate positively and negatively charged groups.
〔化〕兼性离子
Example sentencesExamples
- As a result, gramicidin does not form a zwitterion or become charged at any pH, explaining its poor solubility in water.
- In the case of SPM, the presence of the highly hydratable and relatively bulky zwitterion, phosphorylcholine, further affects ceramide behavior.
- In these studies we have immobilized a wide range of hydrophobic zwitterions onto a reversed-phase chromatographic support to produce the desired zwitterionic stationary phase.
- Some organic molecules may carry a positive and a negative charge on different parts of the molecule and are known as zwitterions.
- Further experiments will address the problem of how many water molecules are required to facilitate and stabilise charge transfer to the zwitterion.

Derivatives

zwitterionic

adjective

Chemistry

The main goal of the present article is to evaluate atomistic molecular dynamics simulations as tools for investigating monolayers of zwitterionic and anionic phospholipids.
Example sentencesExamples
- For example, dimerization of the transmembrane segment of glycophorin is less tight and equilibrates much faster in sodium dodecyl sulfate than in zwitterionic detergents.
- The labelling of phosphatidylcholine was more than halved and replaced by increased labelling of other zwitterionic lipids.
- To determine the phase behavior of the zwitterionic lipids along the water gradient, we combine previous models for lipid-water systems and for lipid mixtures in excess solvent.
- It is this combination of experiment and theory that provides a new and detailed picture of the specific interaction between sodium ions and zwitterionic lipid molecules.
- Another significant factor may be the difference in charge between the buffer salts; phosphate is anionic whereas Tris is cationic and zwitterionic.

Origin

Early 20th century: from German, from Zwitter 'a hybrid' + Ion 'ion'.

Definition of zwitterion in US English:

zwitterion

nounˈ(t)swidərˌīən

Chemistry

A molecule or ion having separate positively and negatively charged groups.
〔化〕兼性离子
Example sentencesExamples
- As a result, gramicidin does not form a zwitterion or become charged at any pH, explaining its poor solubility in water.
- Some organic molecules may carry a positive and a negative charge on different parts of the molecule and are known as zwitterions.
- In these studies we have immobilized a wide range of hydrophobic zwitterions onto a reversed-phase chromatographic support to produce the desired zwitterionic stationary phase.
- In the case of SPM, the presence of the highly hydratable and relatively bulky zwitterion, phosphorylcholine, further affects ceramide behavior.
- Further experiments will address the problem of how many water molecules are required to facilitate and stabilise charge transfer to the zwitterion.

Origin

Early 20th century: from German, from Zwitter ‘a hybrid’ + Ion ‘ion’.

单词	zwitterion
释义	Definition of zwitterion in English: zwitterion noun ˈtsvɪtərʌɪənˈzwɪtərʌɪənˈ(t)swidərˌīən Chemistry A molecule or ion having separate positively and negatively charged groups. 〔化〕兼性离子 Example sentencesExamples As a result, gramicidin does not form a zwitterion or become charged at any pH, explaining its poor solubility in water. In the case of SPM, the presence of the highly hydratable and relatively bulky zwitterion, phosphorylcholine, further affects ceramide behavior. In these studies we have immobilized a wide range of hydrophobic zwitterions onto a reversed-phase chromatographic support to produce the desired zwitterionic stationary phase. Some organic molecules may carry a positive and a negative charge on different parts of the molecule and are known as zwitterions. Further experiments will address the problem of how many water molecules are required to facilitate and stabilise charge transfer to the zwitterion. Derivatives zwitterionic adjective Chemistry The main goal of the present article is to evaluate atomistic molecular dynamics simulations as tools for investigating monolayers of zwitterionic and anionic phospholipids. Example sentencesExamples For example, dimerization of the transmembrane segment of glycophorin is less tight and equilibrates much faster in sodium dodecyl sulfate than in zwitterionic detergents. The labelling of phosphatidylcholine was more than halved and replaced by increased labelling of other zwitterionic lipids. To determine the phase behavior of the zwitterionic lipids along the water gradient, we combine previous models for lipid-water systems and for lipid mixtures in excess solvent. It is this combination of experiment and theory that provides a new and detailed picture of the specific interaction between sodium ions and zwitterionic lipid molecules. Another significant factor may be the difference in charge between the buffer salts; phosphate is anionic whereas Tris is cationic and zwitterionic. Origin Early 20th century: from German, from Zwitter 'a hybrid' + Ion 'ion'. Definition of zwitterion in US English: zwitterion nounˈ(t)swidərˌīən Chemistry A molecule or ion having separate positively and negatively charged groups. 〔化〕兼性离子 Example sentencesExamples As a result, gramicidin does not form a zwitterion or become charged at any pH, explaining its poor solubility in water. Some organic molecules may carry a positive and a negative charge on different parts of the molecule and are known as zwitterions. In these studies we have immobilized a wide range of hydrophobic zwitterions onto a reversed-phase chromatographic support to produce the desired zwitterionic stationary phase. In the case of SPM, the presence of the highly hydratable and relatively bulky zwitterion, phosphorylcholine, further affects ceramide behavior. Further experiments will address the problem of how many water molecules are required to facilitate and stabilise charge transfer to the zwitterion. Origin Early 20th century: from German, from Zwitter ‘a hybrid’ + Ion ‘ion’.
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