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Nonpolar groups

nonpolar group

(Science: chemistry) group in which the electronic charge density is essentially uniform and that cannot therefore interact with other groups by forming hydrogen bonds or by strong dipole dipole interactions.

In an aqueous environment, nonpolar groups tend to cluster together, providing a major force for the folding of macromolecules and formation of membranes. Clusters are formed chiefly because they cause a smaller increase in water structure (decrease in entropy) than dispersed groups.

nonpolar groups interact with each other only by the relatively weak london van der Waals forces.

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hydrophilic - with ionic groups or polar bonds (those with unbalanced electrons) hydrophobic - those with nonpolar groups (or symmetric polar bonds as in CO2)

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by JackBean
Mon Jun 24, 2013 1:33 pm
Forum: Molecular Biology
Topic: Hydrophilic/hydrophobic
Replies: 2
Views: 4456

Membrane transport

... left hand you cant put your right hand on it. c) basically the hydroxyl groups get replaced and the high hydrophilicity is lost and hence the triglycerides can make up the membrane for they are completely nonpolar (though be careful though to not confuse triglycerides with phospholipids ...

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by jwalin
Sun Dec 05, 2010 12:56 am
Forum: Cell Biology
Topic: Membrane transport
Replies: 2
Views: 4029

Protein bonding(antigens)

... α-helix, each peptide bond is trans and planar. The amine and carbonyl groups of peptide bonds point toward each other and in the same plane, so ... its polar side chains to an aqueous environment and to shield its nonpolar side chains, there are still some hydrophobic sections on the exposed ...

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by biobitch
Tue May 25, 2010 4:37 am
Forum: Molecular Biology
Topic: Protein bonding(antigens)
Replies: 8
Views: 11254

at sona regarding anfindsens expt

... protein by destabilizing the structure of water, allowing it to solvate nonpolar groups 2-mercaptoethanol was also required, to reduce the 4 disulfide linkages of the native ...

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by hisunny4u
Mon Oct 01, 2007 11:34 am
Forum: Genetics
Topic: Anfinsens Experiment
Replies: 5
Views: 12184

Morgellon's or ..........flies, or .......

... and hydrophobic molecules are also known as polar molecules and nonpolar molecules, respectively. Definition: Literally - water fearing, ... (a.k.a. amphiphilic) molecule contains both hydrophobic and hydrophilic groups. The hydrophobic group can be a long carbon chain, with the form: ...

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Fri Feb 17, 2006 1:10 am
Forum: Human Biology
Topic: Morgellon's or ..........flies, or .......
Replies: 173
Views: 149450
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