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Isomer

Isomer

1. (Science: chemistry) One of two or more molecules that have the same chemical formula but have a different stereochemical arrangement of their atoms.

2. (Science: radiobiology) nuclides having the same number of neutrons and protons but capable of existing, for a measurable time, in different quantum states with different energies and radioactive properties. Commonly, the isomer of higher energy decays to one of lower energy by the process of isomeric transition.


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Fructose Facts

Try a search on Monosaccharides. Fructose is an isomer of glucose

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by MichaelXY
Mon Sep 29, 2008 9:31 pm
 
Forum: General Discussion
Topic: Fructose Facts
Replies: 1
Views: 515

Sugar isomers

The human body utilizes glucose and other sugars in the D-isomer form. Is the L isomer form sweet tasting and could the L form be used as a food sweetner or is it dangerous for human consumption?

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by genovese
Mon Feb 18, 2008 2:30 pm
 
Forum: Molecular Biology
Topic: Sugar isomers
Replies: 10
Views: 1189

protein specificity

... answer or not. In my mind the two can be related. Specificity would be a discriminatory function--an enzyme can discriminate between two stereoisomers of a substrate and so is specific, preferring to use one isomer over the other. Affinity would refer to binding energy; a more favorable free ...

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by blcr11
Thu May 17, 2007 1:30 pm
 
Forum: Genetics
Topic: protein specificity
Replies: 1
Views: 1109

Cali students....help!!

All other things being equal, trans isomers are more stable than the corresponding cis isomer. Nature tends toward the most stable arrangement of atoms, and so most (but not all) double bonds in fatty acids are trans. There's a little more ...

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by blcr11
Fri Mar 30, 2007 6:30 pm
 
Forum: Cell Biology
Topic: Cali students....help!!
Replies: 1
Views: 568

The Fiber Disease

... and 1 1 -&retinal after reduction by sodium borohydride. The 32-kDa receptor binds all-trans-retinal preferentially, rather than the 1 1 -cis isomer. The amino acid sequence of the opsin-related protein in humans is 86% identical to that of bovine RGR, and a lysine residue, analogous to the ...

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by London
Sat Dec 02, 2006 11:03 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 748645
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