What is the complementary tRNA sequence?
What is the complementary tRNA sequence?
Complementary bases are: adenine (A) and thymine (T), and cytosine (C) and guanine (G). So if one strand of DNA reads A-C-G-C-T-A, then the complementary strand is T-G-C-G-A-T. Each tRNA has a set of three bases on it known as an anti-codon. The anti-codon matches complementary bases in the mRNA sequence.
What is a triplet in RNA?
three nucleotides—called a triplet or codon—codes for one particular amino acid in the protein. The nucleotide sequence in the DNA is first transcribed into a molecule of messenger RNA (ribonucleic acid). These three-letter words are called codons.
What is the function of 3 end in tRNA?
At the 3′ end of the tRNA molecule, opposite the anticodon, extends a three nucleotide acceptor site that includes a free -OH group. A specific tRNA binds to a specific amino acid through its acceptor stem. The cloverleaf structure shown above is actually a two dimensional simplification of the actual tRNA structure.
What is the complementary code in mRNA?
anticodon
What three amino acids does the complementary mRNA Strand code for?
Answer: Only two amino acids are coded for by the mRNA strand and they are tryptophan and glycine. Explanation: The complementary mRNA strand is UGGCAGUGA. UGG codes for tryptophan, CAG codes for glycine while UGA does not code for any amino acid hence, it’s a stop codon.
Does the mRNA stay in your body?
mRNA never enters the nucleus of the cell, which is where our DNA (genetic material) is kept. The cell breaks down and gets rid of the mRNA soon after it is finished using the instructions.
What is the difference in mRNA and RNA?
The main difference between RNA and mRNA is that RNA is the product of the transcription of genes in the genome whereas mRNA is the processed product of RNA during post transcriptional modifications and serves as the template to produce a particular amino acid sequence during translation in ribosomes.
What amino acid does AUG code for?
Methionine is specified by the codon AUG, which is also known as the start codon. Consequently, methionine is the first amino acid to dock in the ribosome during the synthesis of proteins.
What best describes the role of transfer RNA tRNA in protein synthesis?
Transfer RNA (tRNA) is the key to deciphering the code words in mRNA. These complex structures, which physically move along an mRNA molecule, catalyze the assembly of amino acids into protein chains. They also bind tRNAs and various accessory molecules necessary for protein synthesis.
How does tRNA bind to amino acid?
A tRNA molecule has an “L” structure held together by hydrogen bonds between bases in different parts of the tRNA sequence. One end of the tRNA binds to a specific amino acid (amino acid attachment site) and the other end has an anticodon that will bind to an mRNA codon.
What activates tRNA?
The binding of an amino acid to the tRNA acceptor stem occurs as a result of a two-step process: The enzyme binds ATP to the amino acid to form an amino acid–AMP complex linked by a high energy bond (PP released)
What type of bond holds amino acids together?
Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.
Which part of the tRNA does the amino acid bind to?
Each tRNA molecule has two important areas: a trinucleotide region called the anticodon and a region for attaching a specific amino acid.
What are the 3 binding sites for tRNA?
Three tRNA-binding sites are located on the ribosome, termed the A, P and E sites.
Does mRNA go from 5 to 3?
All mRNAs are read in the 5´ to 3´ direction, and polypeptide chains are synthesized from the amino to the carboxy terminus. Each amino acid is specified by three bases (a codon) in the mRNA, according to a nearly universal genetic code.