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Hydroxyl

Hydroxyl

(Science: chemistry) a compound radical, or unsaturated group, ho, consisting of one atom of hydrogen and one of oxygen. It is a characteristic part of the hydrates, the alcohols, the oxygen acids, etc.

Origin: Hydro-, 2 _ oxygen _ -yl.


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Newbie question about the first life

... to form glycoaldehyde, which Strecker synthesis could have converted into serine using glycoaldehyde, hydrogen cyanide and water. Serine has a hydroxyl group in its side chain. There are lab models that show how monomers make polymers but no models showing how the genetic machinery could have ...

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by piscilactovegetarian
Tue Feb 25, 2014 10:21 am
 
Forum: Molecular Biology
Topic: Newbie question about the first life
Replies: 14
Views: 8620

Re: Gluconeogenesis

... of L-Lactate to Pyruvate is 25.1, so it's energetically unfavorable. However, to turn lactate into pyruvate, all you need to do is oxidize the hydroxyl group at the C2 carbon. On the other hand, Alanine needs to be deaminated via Alanine transminase, that uses PLP as a cofactor to transfer ...

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by bytesyzechic
Wed Nov 14, 2012 11:07 pm
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 8
Views: 6732

Re: how to memorize the amino acid

... iso- for no reason, so you move the methyl by one carbon. Threonine and methionine are little bit tricky to remember, but simply they are methyl-hydroxyl and thioether derivatives. The aromatic amino acids are quite simple, since you just add benzene to the Ala and you have (surprisingly :lol:) ...

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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: 5157

Re: fructose as a monomer for a polysaccharide

... the ketone is the oxygen in the ring) is bound up into a non-reducing disaccharide as is the case sucrose. This anomeric carbon has the reactive hydroxyl group that I have referred to that is used in the reducing part and makes the bond to the monomer or ogliosacchride that is being bound to. ...

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by daniel.kurz
Tue Nov 22, 2011 11:44 pm
 
Forum: Cell Biology
Topic: fructose as a monomer for a polysaccharide
Replies: 9
Views: 10263

Re:

... for this to happen. Glucose does polymerize because it is favorable. The energetics of the reaction are favorable because glucose has a reactive hydroxyl group that is made reactive by the fact that glucose in the 5 carbon ring with an oxygen bound up is a hemiacetal. This make the hydroxyl group ...

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by Maatomaat
Tue Nov 22, 2011 11:57 am
 
Forum: Cell Biology
Topic: fructose as a monomer for a polysaccharide
Replies: 9
Views: 10263
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