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Methionine

methionine

(Science: biochemistry) Contains the SCH3 group that can act as a methyl donor (see s adenosyl methionine). Common in proteins but at low frequency. The met x linkage is subject to specific cleavage by cyanogen bromide.

See: formyl peptides. A crystalline amino acid containing sulfur; found in most proteins and essential for nutrition.One of 20 [[amino acids commonly found in [[ proteins.


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Molecular gene (genome) concept scientifically untenable

... nature of the biological code implies several triplets coding per amino acid. Further, two amino acids have only one mRNA codon each; AUG for methionine and UGG for tryptophan. Hence 59 degenerate triplets code 18 amino acids; these 18 have two to six synonymous codons each. Choices between ...

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by PAWahid
Wed May 02, 2012 4:54 am
 
Forum: Molecular Biology
Topic: Molecular gene (genome) concept scientifically untenable
Replies: 12
Views: 20470

Wobble hypothesis.How does met & trp not get mis translated?

... codon that specify the same amino acid. But there are no several tRNA molecules that recognize the same codon. Tryptophan is coded only by UGG and methionine is coded only by AUG. So Trp codon is recognized by the tRNA with the anticodon ACC and Met codon is recognized by the tRNA with the anticodon ...

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by Sue4
Tue Apr 10, 2012 4:30 pm
 
Forum: Molecular Biology
Topic: Wobble hypothesis.How does met & trp not get mis translated?
Replies: 2
Views: 4205

Wobble hypothesis.How does met & trp not get mis translated?

... or (3'-ACC-5'). But the stop codon (5'-UGA-3') can then also pair with (3'-ACU-5') according to these rules? The same would be true for methionine codon (5'-AUG-3') it can pair with the anticodon (3'-UAU-5'), but this anticodon is also able to bind with Isoleucine (5'-AUA-3')? Rules ...

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by Awol
Sun Apr 08, 2012 6:33 pm
 
Forum: Molecular Biology
Topic: Wobble hypothesis.How does met & trp not get mis translated?
Replies: 2
Views: 4205

Methionine for protein expression

If Methionine coding sequence is inserted in front of the sequence of protein in cloning vector, it facilitates an expression of this protein. I need information about this technique. Can tou advise me some articles on this ...

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by Valya
Wed Feb 29, 2012 7:58 pm
 
Forum: Molecular Biology
Topic: Methionine for protein expression
Replies: 0
Views: 516

Re: how to memorize the amino acid

... and leucine are dimethyl and isopropyl derivatives. Isoleucine is not 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, ...

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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: 4347
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