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Alanine

Alanine

(Science: amino acid) alanine is a nonessential amino acid that can be manufactured by the body from other sources as needed. Alanine is one of the simplest of the amino acids and is involved in the energy-producing breakdown of glucose. in conditions of sudden anaerobic energy need, when muscle proteins are broken down for energy, alanine acts as a carrier molecule to take the nitrogen-containing amino group to the liver to be changed to the less toxic urea, thus preventing buildup of toxic products in the muscle cells when extra energy is needed. Because the body easily constructs alanine from other sources, no deficiency state is known. Alanine is found in a wide variety of foods, but is particularly concentrated in meats. a crystalline amino acid that occurs in many proteins.Alanine is one of twenty amino acids that form a polypeptide Chain (proteins).


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Re: Homework help!

... will bond with the mRNA codons. UAC UGA GCG AAU GCA AUU D) Show the correct sequence of amino acids coded for by this mRNA Tyrosine, Cysteine, Alanine, Aspargine, Alanine, Isoleucine :wink:

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by Harvey23
Mon Mar 02, 2009 6:09 pm
 
Forum: Genetics
Topic: Homework help!
Replies: 5
Views: 575

Wondering if someone can check this (DNA related)

... of DNA are thymine, calculate the percentage of the bases that are guanine: 35% Given: ATG: Tyrosine TAC: Methionine CCT: Glycine TCG: Serine CGT: Alanine 1. Write down the amino acid sequence coded for by a piece of messenger RNA with the following base sequence (AUG AGC GCA GCA UAC GGA): Methionine, ...

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by mjaigirdar
Sun Feb 08, 2009 11:15 pm
 
Forum: General Discussion
Topic: Wondering if someone can check this (DNA related)
Replies: 1
Views: 522

Finding the net charge of amino acid

NH3+---KAPRM---COO- K=Lysine has a charged R group A=ALanine nonpolar so not charged P=Proline (nonpolar) so not charged R=Arginine R group positive) M=nonpolar using this formula log[COO-]\[COOH]=pH-pK or log[NH2]\[NH3+]=pH-PK the alpha amino group ...

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by nic852
Thu Oct 02, 2008 2:51 am
 
Forum: Molecular Biology
Topic: Finding the net charge of amino acid
Replies: 15
Views: 6649

Finding the net charge of amino acid

If you assume the data of pKa = 9, and that the acidic equilibrium is not important, at pH 8 roughly 10% of the alanine carries a net charge of -1 while 90 % remain zwitterionic (net charge = 0). If you use the actual pKa for alanine, then even less alanine carries a net charge--maybe ...

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by blcr11
Tue Sep 30, 2008 12:29 pm
 
Forum: Molecular Biology
Topic: Finding the net charge of amino acid
Replies: 15
Views: 6649

Re: Finding the net charge of amino acid

I'm a little puzzled, I guess. You haven't been given the specific pKa's for alanine and yet you are supposed to come up with some sort of fractional charge, as in % ionized or something like that? The pKa's for alanine are 2.3 for the acid group and 9.7 for the ...

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by blcr11
Tue Sep 30, 2008 12:07 pm
 
Forum: Molecular Biology
Topic: Finding the net charge of amino acid
Replies: 15
Views: 6649
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