Asked Oct 17, 2019

Explain the steps of Bacterial Translation Initiation. 

1. Formation of preinitiation complex. 

2. Formation of 30S initiation complex. 

3. Ribosome assembly. 

check_circleExpert Solution
Step 1

The translation is defined as the process in which information in messenger RNA is decoded to produce a new polypeptide chain. The codons present in mRNA provides the information for protein synthesis. The translation process is divided into three parts: initiation, elongation, and termination.

Step 2

1. Formation of preinitiation complex. 

The 70SIC (70 S initiation complex) is the preinitiation complex formed  before the translation process. The complex is formed by joining of ribosomal subunits. Translation occurs on small molecules known as ribosomes.  Ribosome is composed of smaller and larger subunit that decodes the mRNA transcript and generates the polypeptide chain.

The initiation factors IF1, IF2, IF3 assist the binding of smaller subunit with mRNA transcript, they also mediate base pairing between the start codon and anticodon of tRNA. 

Step 3

2.Formation of 30S initiation complex:

The process of transcription begins with the formation of initiation complex known as 30 S initiation complex (30SIC). The complex consists of initiation factors IF1, IF2 and1F3, mRNA start codon and an anticodon.  

The start codon of mRNA trans...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour*

See Solution
*Response times may vary by subject and question
Tagged in



Related Biology Q&A

Find answers to questions asked by student like you

Show more Q&A add

Q: We are talking about driving glycolysis in reverse in biology. to do that, we need the products. one...

A: In reverse glycolysis, the conversion of carbon dioxide to pyruvate is a reduction process. This pro...


Q: Why are estimates of ATP production from cellular respiration provided in terms of a range (30-32, f...

A: Adenosine triphosphates (ATP) are complex organic molecules that act as high energy compounds. They ...


Q: When pure hemoglobin (molecular mass of 64,000 Da) is separated by the following methods, what major...

A: Hemoglobin is a tetramer composed of two alpha and two beta subunits. The Molecular weights of the a...


Q: B2 ?

A: Circumduction movement refers to the movement of the body in a circular fashion. This movement is a ...


Q: you are trying to come up with a drug to inhibit the activity of an enzyme thuogth to have a role in...

A: The value for Ki′ cannot be 0/2 ×10-5, so we are assuming it as 0.2×10-5­M. We are also assuming tha...


Q: An uncatalyzed reaction has keq=50. in the presence of an appropriate enzyme.the forward rate of the...

A: The enzyme does not change the equilibrium constant (Keq) of a reaction. Hence the value of the equi...


Q: Which of the following pairs of terms is correctly matched?   Voltage-gated calcium channels : presy...

A: Correctly matchedTransmission of chemical synapses occurs when a nerve impulse reaches the presynapt...


Q: Consider the energy budget of glycolysis as a whole  a) How many ATP's are made total? b) How many A...

A: Glycolysis is a set of reactions that takes place in the cytoplasm of prokaryotes and eukaryotes. Th...


Q: difference between cohesion and adhesion

A: Cohesion and adhesion are the terms derived from the word “hesion” meaning to stick together. These ...