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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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Re: Tricky translation question, can someone help please?

... coding region where regulatory proteins bind the DNA and help a polymerase to hook onto the DNA and start transcription. You need to start with a methionine codon (AUG) and then count triplets (including the methionine) until you reach the stop (which you don't count as an amino acid).

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by jonmoulton
Mon Jun 15, 2009 11:29 pm
 
Forum: Molecular Biology
Topic: Tricky translation question, can someone help please?
Replies: 1
Views: 131

Re: primer design - please help

... TPEVSEMISGDWLESSISNLVFTY I have highlighted the start codon for translated bases in red (the methionine which is the start codon) and the HMG box that I need to design primers for is highlighted in blue. The mRNA sequence: 1 ttccccagca ttcgagaaac ...

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by monkey07
Wed May 06, 2009 4:18 pm
 
Forum: Genetics
Topic: primer design - please help
Replies: 3
Views: 575

Re: Homework help!

... A codon consists of three (3) nucleotides - 18/3 = 6. C) UAC UGA GCG AAU GCA AUU D) I am assuming we are using (AUG ACA CGC UUA CGU UAA): 1. AUG = Methionine (start codon) 2. ACA = Threonine 3. CGC = Arginine 4. UUA = Leucine 5. CGU = Arginine 6. UAA = Stop [Not entirely sure about the last, but ...

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by Mech
Thu Mar 19, 2009 12:25 pm
 
Forum: Genetics
Topic: Homework help!
Replies: 5
Views: 575

Re: What mechanism is responsible for sequencing of amino acid?

Translation like the above person said. Yes, tRNA, 70s Ribosome...WPA...methionine...anticodon pairs with codon...etc...etc...just read up on translation.

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by sabrinal30
Sat Feb 21, 2009 2:04 am
 
Forum: General Discussion
Topic: What mechanism is responsible for sequencing of amino acid?
Replies: 3
Views: 555

Wondering if someone can check this (DNA related)

... Given that 15% of the bases in a piece 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 ...

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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: 524
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