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Methyl group

Methyl group

A -CH3 group on a larger molecule. A carbon which is single-bonded to three hydrogens, and has one free bond to the rest of the molecule.

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cell specific markers

... as the basis for ‘genetic weapons’ which would target particular ethnic groups”. 99.9% of the genetic sequence of any two human individuals is said ... searches for alleles in large populations: The gene for thiopurine methyl transferase (TPMT) is an enzyme involved in metabolism of certain ...

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by MarkHolland
Sat Mar 30, 2013 3:16 pm
Forum: Cell Biology
Topic: cell specific markers
Replies: 3
Views: 8451

Re: how to memorize the amino acid

... cysteine are hydroxy- and thiol derivatives. Valine and leucine are dimethyl and isopropyl derivatives. Isoleucine is not iso- for no reason, so ... to remember it is one carbon shoter than Lys and there is the guanidium group. If you look on the urea cycle , you can see there is the arginine ...

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by JackBean
Thu Feb 09, 2012 9:52 am
Forum: General Discussion
Topic: how to memorize the amino acid
Replies: 4
Views: 7184

Re: HIV Exposure to air

Wondering what molecule could be attached to a methyl group to cap (inactivate) any of the 8 main HIV genes, thereby not allowing them to produce gene product ...

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Mon Nov 16, 2009 1:07 pm
Forum: Microbiology
Topic: HIV Exposure to air
Replies: 7
Views: 40053

Does anything affect absorption spectrum of chlorophyll?

First of all, I was wrong. There is a methyl group on chlorophyll a and a carbonyl group on chlorophyll b. The accessory pigments will affect the ...

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by plasmodesmata11
Tue Mar 03, 2009 11:20 pm
Forum: Botany Discussion
Topic: Does anything affect absorption spectrum of chlorophyll?
Replies: 11
Views: 18317

Re: Krebs Cycle question

... and oxaloacetate to form citrate) is the enolization of the acetyl group which then acts as a nucleophile toward bound oxaloacetate. Water--freely ... thiol activates in two senses: it enhances the rate of enolization (the methyl protons of the thioester are more acidic than a simple ester); and ...

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by blcr11
Sun Dec 28, 2008 12:28 am
Forum: Cell Biology
Topic: Krebs Cycle question
Replies: 4
Views: 12326
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