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How is the nucleotide seguence in the mRNA translated into a polypeptide sequence?
As we all know, mRNA undergoes translation to form a polypeptide sequence.
Besides the mRNA, there are still the tRNA ( transfer RNA ) and rRNA ( ribosomal RNA ). All these three types of RNA are essential in determining the polypeptide sequence.
This is the because, mRNA only acts as a messenger. A messenger to bring the information from the DNA to the ribosome to synthesis protein.
the tRNA transports the required amino acid to form the polypeptide refering to the mRNA while the rRNA builds a site for the polypeptide synthesis to occur.
For translation to occur, the essential components are required : tRNA with it's anticodons to the start codon - UAC - ( start codon = AUG- methionine). the subunits of the ribosomal RNA and the mRNA that needs to be translated.
i)the tRNA with the correct anticodons binds to the start codon.
ii) the next tRNA recognizing the next codon locates itself on the ribosome and the first tRNA is transferred by ribosome.
iii) Once the amino acid are in place, peptide bonds are formed between them and a polypeptide chain is formed. the first tRNA leaves the ribosome while the next tRNA takes it's place. As another tRNA recognizes the next codon, it locates itself on the ribosome once more.
iv) Translation goes on until the ribosome reaches either one of the stop codon. -- UAA / UAG/ UGA.. found on the mRNA.
v) When the ribosome arrives at the stop codon, translation stops. The ribosome splits to it's two sub units, and the newly synthesized polypeptide chain is released from the mRNA.
vi) the tRNA and rRNA can be reused to form new polypeptides on other mRNA strands.
What else can I help you with?
What programs the amino acid sequence of a polypeptide?
There are several computational programs available for predicting the amino acid sequence of a polypeptide. Some commonly used programs include ExPASy Translate tool, EMBOSS Transeq, and the NCBI ORFfinder. These tools take a nucleotide sequence as input and predict the corresponding amino acid sequence by translating the nucleotide sequence based on the genetic code.
Which molecule directs the synthesis of a polypeptide at a ribosome?
Messenger RNA (mRNA) directs the synthesis of a polypeptide at a ribosome by providing the instructions encoded in its nucleotide sequence for the order in which amino acids should be linked together to form the polypeptide.
Why did steps 3 and 4 produce different polypeptides?
Steps 3 and 4 likely produced different polypeptides due to differences in the nucleotide sequence of the mRNA that was used as the template for protein synthesis. The codons in mRNA determine the sequence of amino acids in the polypeptide chain. Any change in the nucleotide sequence can lead to the incorporation of different amino acids during translation, resulting in a different polypeptide being produced.
What is the maximum length of a polypeptide encoded by an mRNA that is 45 nucleotides long?
The maximum length of a polypeptide encoded by an mRNA is determined by the number of nucleotides in the mRNA sequence. Each amino acid is encoded by a set of three nucleotides called a codon. With a 45-nucleotide mRNA sequence, the maximum length of the polypeptide would be 45/3 = 15 amino acids.
Which genetic change is best described by the following statement A random change in the base sequence of DNA results in an alteration of a polypeptide?
A point mutation is best described by this statement. Point mutations occur when there is a change in a single nucleotide base in the DNA sequence, which can lead to changes in the corresponding amino acid sequence of a polypeptide during protein synthesis.
What does seguence mean?
SEGUENCE is not a word, however SEQUENCE is. Sequence means "the following of one thing after another; succession."
What programs the amino acid sequence of a polypeptide?
There are several computational programs available for predicting the amino acid sequence of a polypeptide. Some commonly used programs include ExPASy Translate tool, EMBOSS Transeq, and the NCBI ORFfinder. These tools take a nucleotide sequence as input and predict the corresponding amino acid sequence by translating the nucleotide sequence based on the genetic code.
What is the relationship between the linear sequence of codons on mRNA and the linear sequence of amino acids in a polypeptide?
The linear sequence of codons on mRNA corresponds to the linear sequence of amino acids in a polypeptide through the process of translation. Each three-nucleotide codon on the mRNA molecule codes for a specific amino acid, and the sequence of codons determines the order in which amino acids are added to the growing polypeptide chain. This relationship is known as the genetic code.
Which molecule directs the synthesis of a polypeptide at a ribosome?
Messenger RNA (mRNA) directs the synthesis of a polypeptide at a ribosome by providing the instructions encoded in its nucleotide sequence for the order in which amino acids should be linked together to form the polypeptide.
Why did steps 3 and 4 produce different polypeptides?
Steps 3 and 4 likely produced different polypeptides due to differences in the nucleotide sequence of the mRNA that was used as the template for protein synthesis. The codons in mRNA determine the sequence of amino acids in the polypeptide chain. Any change in the nucleotide sequence can lead to the incorporation of different amino acids during translation, resulting in a different polypeptide being produced.
What is the maximum length of a polypeptide encoded by an mRNA that is 45 nucleotides long?
The maximum length of a polypeptide encoded by an mRNA is determined by the number of nucleotides in the mRNA sequence. Each amino acid is encoded by a set of three nucleotides called a codon. With a 45-nucleotide mRNA sequence, the maximum length of the polypeptide would be 45/3 = 15 amino acids.
Which genetic change is best described by the following statement A random change in the base sequence of DNA results in an alteration of a polypeptide?
A point mutation is best described by this statement. Point mutations occur when there is a change in a single nucleotide base in the DNA sequence, which can lead to changes in the corresponding amino acid sequence of a polypeptide during protein synthesis.
The DNA language consists of a linear sequence of nucleotide?
Yes, the DNA language is composed of four nucleotide bases: adenine, cytosine, guanine, and thymine, arranged in a linear sequence along the DNA strand. This sequence carries genetic information that is transcribed and translated to produce proteins.
What is the relationship between a nucleotide sequence and an amino acid sequence in the process of protein synthesis?
During protein synthesis, a nucleotide sequence in DNA is transcribed into a messenger RNA (mRNA) sequence. This mRNA sequence is then translated into an amino acid sequence by ribosomes. Each set of three nucleotides in the mRNA, called a codon, corresponds to a specific amino acid. This relationship between nucleotide sequences and amino acid sequences is crucial for the accurate assembly of proteins in the cell.
What is the complementary nucleotide sequence of ccgagattg?
The complementary nucleotide sequence of ccgagattg is ggctctaac.
Does mRNA contain uracil or thymine in its nucleotide sequence?
mRNA contains uracil in its nucleotide sequence, not thymine.
The order of the amino acids in a polypeptide chain are determind by the order of nucleotides in the what?
The order of amino acids in a polypeptide chain (protein) is determined by the order of nucleotide triplets in the messenger RNA, or mRNA, chain that was transcribed from the DNA inside the nucleus for that specific protein.
