Table of Contents
What is the length of mRNA code?
The “thread-like” mRNA backbone has a diameter of less than 2 nm, much smaller than the diameter of a characteristic globular protein of about 5nm (BNID 100481). On the other hand, a characteristic 1000 nucleotide long mRNA (BNID 100022) will have a linear length of about ≈300 nm (BNID 100023).
How many codons would be needed to code for a protein that has 50 amino acids?
How many codons would that 50 codons would be needed to code for 50 amino acids. 1 codon for every amino acid. protein 2. What amino acid is brought to the ribosome by the tRNA if the mRNA codon is UCA?
How many nucleotides long is mRNA?
It had long been known that only 20 amino acids occur in naturally derived proteins. It was also known that there are only four nucleotides in mRNA: adenine (A), uracil (U), guanine (G), and cytosine (C).
What is the maximum number of amino acids that it will be coded for?
Explanation: 1500 nucleotides translates to 500 codons with 3 nucleotides per codon. This would include the stop codon which would not translate to an amino acid. This means there would be a maximum of 499 amino acids in the chain.
Why is mRNA longer than ORF?
And when it’s translated into a protein, the mRNA is not read one letter at a time, but it’s read three letters at a time. The longer an open reading frame is, the longer you get before you get to a stop codon, the more likely it is to be part of a gene which is coding for a protein.
Are mRNA and DNA the same length?
RNA can form into double-stranded structures, such as during translation, when mRNA and tRNA molecules pair. DNA polymers are also much longer than RNA polymers; the 2.3m long human genome consists of 46 chromosomes, each of which is a single, long DNA molecule. RNA molecules, by comparison, are much shorter4.
How many mRNA nucleotides are required to encode this polypeptide?
The human β-globin polypeptide contains 146 amino acids. How many mRNA nucleotides are required to encode this polypeptide? Note: (146*3)=438 because 3 nucleotides make up 1 codon, which codes for the amino acid.
What is encoded by a single codon?
Only tryptophan and methionine, (turkeys on meth), are encoded by a single codon. Only $47.88/year. Synonymous codons. different codons that specify the same amino acid.
How many nucleotides are in 12 mRNA codons?
Since there are 12 mRNA present, the number of nucleotides will be more than 12 and 24 but less than 48 because each codon has three nucleotides.
What are mRNA nucleotides?
mRNA is “messenger” RNA. mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. The message is encoded in the nucleotide sequence of the mRNA, which is complementary to the nucleotide sequence of the DNA that served as a template for synthesizing the mRNA.
What is the maximum number of amino acids that can be specified by a codon consisting of a sequence of two bases?
Codons are made up of any triplet combination of the four nitrogenous bases adenine (A), guanine (G), cytosine (C), or uracil (U). Of the 64 possible codon sequences, 61 specify the 20 amino acids that make up proteins and three are stop signals.
How many different amino acid sequences are possible in a polypeptide 146 amino acids long?
(c) How many different amino acid sequences are possible in a polypeptide 146 amino acids long? (a) “multiple codons that code for the same amino acid” 4^3 =64 possible combinations.