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How many mRNA molecule made?
he old dogma of molecular biology held that for every gene there was one protein (and therefore one mRNA). This is not the case, as we now know. There are many different mRNAs that can arise from a single gene, depending on splicing, promoting and enhancing regions etc. The answer to the first question is 'it depends'-on the gene, the cell conditions etc. Introns were thought of as junk DNA, but they now appear to play at least a minor regulatory role in many cases, as well as influencing splicing etc. Amino acids can be coded for by a number of different codons (sets of 3 nucleotides, the unit with which the DNA sequence is read and interpreted) due to the DNA sequence redundancy. This means that many of the amino acids found in a chain may have been coded by any of (up to 6) different codon sequences, so you can't tell exactly the DNA sequence just from the amino acid sequence. (e.g. Argenine is coded by CGI, CGC, CGA and CGG, which means you can't tell which sequence on the DNA coded for the argenine, it could be any of the four possible choices)
Does changing the sequence of nucleotides always result in a change in the sequence of amino acids?
This is actually false. DNA strands that codes for amino acids do so using 3 nucleic acids to encode an amino acid. Since there are 4 nucleic acids with 3 positions each, there are 64 possible nucleic acid "words". There are only 20 amino acids that are directly coded by these 3-nucleic-acid-words. All 64 "words" are valid. but the number of nucleic acid "spellings" that code for a particular amino acid varies from 1 to 6. There are many mutations where one or more changes to a nucleic acid sequence will not change the protein being made; so long as the changes are simply different "spellings" of the same amino acid. A statistical example: There are around 57,000 different "spellings" of the first 10 amino acids in human serum albumin that will produce the protein correctly.
What chain is proteins in?
Proteins are first produced as polypeptide chains. This is known as the primary structure of the proteins. Polypeptide or protein chain comprised of amino acids connected each other with peptide bonds.
What is the maximum number of amino acids that could be coded for by a sextion of mrna with the sequence guucagaacugu?
A codon is three bases long - so this section of mRNA would have 4 codons; UGA-UUC-AGU-AAC.Each codon relates to a specific amino acid (but several codons can code for the same amino acid, for example both UUU and UUC code for the amino acid Phenylalanine).Normally if you have four codons, such as this section of mRNA, the maximum number of amino acids you could have would be four. However, the first codon in this section, UGA, is actually a STOP codon. This means that when the ribosome reaches this codon, no further amino acids will be joined.This means that no amino acids could be coded for with this section of mRNA. (If the order of the codons was reversed, making the STOP codon last, then the answer would be three).
Proteins are broken into?
Proteins are made up of amino acids connected by peptide bonds. Proteins digested in to peptides first by proteases such as pepsin. They ultimately digested to form individual amino acids that are utilized by our cells.
Who discover for the first time the sequence of amino acids in protein?
Fred sanger
What would be the first three amino acids in the protein formed from this gene uagcgagg?
Each amino acid is coded for by a 3-base sequence known as a codon. Therefore you would need 9 bases to code for 3 amino acids.The sequence UAG-CGA-GG would not add three amino acids to a protein.For the sequence UAG-CGA-GG:UAG is a STOP codon - translation would cease at this point and no further amino acids would be added.CGA codes for Arginine.GG does not code for an amino acid - it would need one more base to be a codon. GGU, GGA, GGG and GGC all code for Glycine.
Which of the following refers to the amino acid sequence of proteins?
In order to answer this question, you must, and prpbably do have the codon sequences of the RNA or DNA, and a chart saying what each codon codes for in terms of amino acids. The mRNA from transcription is what the sheet probably has on it, with each codon contained therin signaling a certain amino acid. If you can post the sequence or something like that, then ill sertainly answer it for you.
How many mRNA molecule made?
he old dogma of molecular biology held that for every gene there was one protein (and therefore one mRNA). This is not the case, as we now know. There are many different mRNAs that can arise from a single gene, depending on splicing, promoting and enhancing regions etc. The answer to the first question is 'it depends'-on the gene, the cell conditions etc. Introns were thought of as junk DNA, but they now appear to play at least a minor regulatory role in many cases, as well as influencing splicing etc. Amino acids can be coded for by a number of different codons (sets of 3 nucleotides, the unit with which the DNA sequence is read and interpreted) due to the DNA sequence redundancy. This means that many of the amino acids found in a chain may have been coded by any of (up to 6) different codon sequences, so you can't tell exactly the DNA sequence just from the amino acid sequence. (e.g. Argenine is coded by CGI, CGC, CGA and CGG, which means you can't tell which sequence on the DNA coded for the argenine, it could be any of the four possible choices)
Does changing the sequence of nucleotides always result in a change in the sequence of amino acids?
This is actually false. DNA strands that codes for amino acids do so using 3 nucleic acids to encode an amino acid. Since there are 4 nucleic acids with 3 positions each, there are 64 possible nucleic acid "words". There are only 20 amino acids that are directly coded by these 3-nucleic-acid-words. All 64 "words" are valid. but the number of nucleic acid "spellings" that code for a particular amino acid varies from 1 to 6. There are many mutations where one or more changes to a nucleic acid sequence will not change the protein being made; so long as the changes are simply different "spellings" of the same amino acid. A statistical example: There are around 57,000 different "spellings" of the first 10 amino acids in human serum albumin that will produce the protein correctly.
What is converting the info on the mRNA into a sequence of amino acids that make up a protein?
First we convert the nucleic acid into a messenger RNA, mRNA, by the process of transcription. Then, in the ribosome, we convert this mRNA unto a polypeptide ( the amino acid sequence ) by the process of translation.
What chain is proteins in?
Proteins are first produced as polypeptide chains. This is known as the primary structure of the proteins. Polypeptide or protein chain comprised of amino acids connected each other with peptide bonds.
What is the maximum number of amino acids that could be coded for by a sextion of mrna with the sequence guucagaacugu?
A codon is three bases long - so this section of mRNA would have 4 codons; UGA-UUC-AGU-AAC.Each codon relates to a specific amino acid (but several codons can code for the same amino acid, for example both UUU and UUC code for the amino acid Phenylalanine).Normally if you have four codons, such as this section of mRNA, the maximum number of amino acids you could have would be four. However, the first codon in this section, UGA, is actually a STOP codon. This means that when the ribosome reaches this codon, no further amino acids will be joined.This means that no amino acids could be coded for with this section of mRNA. (If the order of the codons was reversed, making the STOP codon last, then the answer would be three).
Proteins are broken into?
Proteins are made up of amino acids connected by peptide bonds. Proteins digested in to peptides first by proteases such as pepsin. They ultimately digested to form individual amino acids that are utilized by our cells.
What are the Feature of genetic code?
it is made of a sequence of nucleotides:in DNA or RNA, these nucleotides are adenine, guanine, cytosine, and uracil where it determines the specific amino acid sequence in the proteins,but is the biochemical of heredity and nearly universal in all organisms... DNA transfers and forms a code.
What are the 20 kinds of amino acids?
histidineisoleucineleucinelysinemethioninephenylalaninethreoninetryphtophanvalinealaninearginineasparagineaspartic acidcysteinglutamic acidglutamineglycineprolineserinetyrosinethe first list are the essential amino acids while the second are the non essential ones. :)
What is the first amino acids?
Methionine, made from the codon AUG.
