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Polypeptide

Polypeptide

(Science: biochemistry) A peptide which on hydrolysis yields more than two amino acids called tripeptides, tetrapeptides, etc, according to the number of amino acids contained.


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Central Dogma of Molecular Biology

... ribosomal RNA (rRNA) and transfer RNA (tRNA) , but here we are concerned with mRNA. A protein is simply a large peptide, and can also be called a polypeptide. The building blocks of peptides and proteins are amino acids, which are linked by amide (peptide) bonds. The RNA can be converted back ...

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by JosePR
Sat Apr 25, 2009 8:53 pm
 
Forum: Molecular Biology
Topic: Central Dogma of Molecular Biology
Replies: 3
Views: 1059

Gene expression

well not really. you see each chromosome has 2 alleles that produce their own polypeptide products. But the fact that a hemoglobin molecule contains two alpha chains does not necessarily mean that one subunit came from one allele and the other came from the other ...

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by MrMistery
Sat Mar 28, 2009 2:51 am
 
Forum: Molecular Biology
Topic: Gene expression
Replies: 1
Views: 418

Re: Gene giving rise to Protein

In Eukayotes most of the genes are interrupted. Information in the genes are encrypted in sequences that will ultimately become a part of the polypeptide chain are called exons. But these exons are interrupted by long sequences which do not become a part of the polypeptide chain and they are ...

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by manohar
Tue Mar 24, 2009 6:15 am
 
Forum: Cell Biology
Topic: Gene giving rise to Protein
Replies: 2
Views: 348

Need help with Met and Ter in RNA

I need to have five Mets and five Ter's. Can you write the amino acid sequence that form the polypeptide between the start (met) and stop (ter)? Thanks   mRNA STRAND uaaaaaggaug acg gcg gac ccc agu agg aua ggc gau auc aga ucu aaa gca ugu cgu uuu guu uac caa uaa cag uaa ...

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by mellave
Fri Mar 06, 2009 4:56 am
 
Forum: Genetics
Topic: Need help with Met and Ter in RNA
Replies: 3
Views: 330

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

... the RNA chain. The corresponding amino acid which is brought by the tRNA reacts chemically in the ribosome to form the peptide bond in the forming polypeptide chain of protein. Then there is a special codon which ends the process--can't remember what it's called off hand. There is a great video ...

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by AFJ
Sun Mar 01, 2009 6:04 pm
 
Forum: General Discussion
Topic: What mechanism is responsible for sequencing of amino acid?
Replies: 3
Views: 552
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