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Valine

valine

(Science: amino acid) An essential amino acid. Valine is found in abundant quantities in most food. Valine has a stimulant effect. Healthy growth depends on it. A deficiency results in a negative hydrogen balance in the body. Valine is used by bodybuilders, in conjunction with leucine and isoleucine, for muscle growth, tissue repair and as an energizer. There is little scientific evidence to support these claims, though studies have shown that these three substances might be able to help restore muscle mass in people with liver disease, injuries or who have undergone surgery, but no studies have shown them to be effective for healthy people. Because valine cannot be produced by the body, healthy people should ensure that they are obtaining at least the recommended amount in their diet. Valine can be metabolised to produce energy, which spares glucose. A deficiency may affect the myelin covering of the nerves. Recent studies indicate that valine, as well as leucine and isoleucine, may be effective in treating or reversing hepatic encephalopathy or alcohol related brain damage. It may also be useful in degenerative neurological conditions. Main food sources of valine are soy flour, raw brown rice, cottage [[chee 559 se]], fish, beef, lamb, chicken, almonds, brazil nuts cashews, peanuts, sesame seed, lentils, chickpeas and mushrooms. An essential amino acid found in proteins; important for growth in children and nitrogen balance in adults.One of 20 amino acids commonly found in proteins.


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Re: Sequence allignment questions

No, there are only few amino acids marked with : Trp is also red (W) and is not small amino acid. Are alanine and valine small and hydrophobic?

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by TToe
Sat Nov 24, 2012 4:18 pm
 
Forum: Genetics
Topic: Sequence allignment questions
Replies: 6
Views: 2114

Re: Theories - Origin of Life

... recessive disorder caused by a point mutation on chromosome 11. The most common disease-causing mutation causes glutamic acid to take the place of valine in hemoglobin's beta chains, which in turn causes a hydrophobic chunk to stick out of the protein, which in turn causes the proteins to clump ...

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by Luxorien
Thu Mar 08, 2012 10:21 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755433

Re: how to memorize the amino acid

... as well, since it is an imino acid. Alanine is the "basic" amino acid. Now, serine and cysteine are hydroxy- and thiol derivatives. Valine and leucine are dimethyl and isopropyl derivatives. Isoleucine is not iso- for no reason, so you move the methyl by one carbon. Threonine and ...

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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: 4345

Biochemistry/ Proteins & Amino Acids

... organisms do not use BPG as the central allosteric effector that binds between the two Beta-subunits of Hb. Instead they use: a) ATP b) glucose c) valine d) arginine e) mercaptoethanol 4. Some species of fish have a modified Hb, where the N-termini of all four subunits are acetylated, i.e. CH3CO-NH-CHR1CONH-CHR2CONH-etc. ...

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by SimplyMe
Tue Feb 23, 2010 8:32 am
 
Forum: General Discussion
Topic: Biochemistry/ Proteins & Amino Acids
Replies: 4
Views: 5285

synonymous vs conservative missense mutation

... encodes a different amino acid e.g. Sickle cell disease is caused by a GAG (which encodes glutamate) to GTG mutation resulting in the formation of valine instead. As a result Haemoglobin S is formed instead of the normal haemoglobin A/A2 Hope that makes sense :? :lol:

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by Katy_Bobbles
Sat Aug 25, 2007 4:50 pm
 
Forum: Genetics
Topic: synonymous vs conservative missense mutation
Replies: 6
Views: 7879
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