What is self-catalytic rnas, Biology

Assignment Help:

Q. What is self-catalytic RNAs?

Ribozymes -Term 'ribozyme' was initially suggested by Thomas R. Cech, Nobel Prize winning biochemist, who discovered this class of RNA molecules. A ribozyme is an RNA molecule which may catalyze a biochemical reaction. Before discovery of ribozymes, it was generally presumed that protein enzymes were only class of biological catalysts. Cech's discovery was truly revolutionary in upsetting this dogma. First ribozymes discovered were introns which could catalyze their own splicing, that is a special type of intron within a pre-RNA molecule was found to catalyze all steps required for intron removal and joining of exons together at the biologically correct site.

Ribozymes with other kinds of biological activity have since been discovered. One intriguing potential ribozyme is peptidyl transferase activity of ribosome. Many believe that peptide bond formation is catalyzed by23S ribosomal RNA, a potential ribozyme, instead of ribosomal proteins.


Related Discussions:- What is self-catalytic rnas

Define energy requirement for cancer patients, Define Energy Requirement fo...

Define Energy Requirement for Cancer Patients? It must be clear to you that cancer imposes increased energy demands because of the hyper-metabolic state of the disease process

Class of subphylum uniramia - symphyla, Class of Subphylum Uniramia - Symph...

Class of Subphylum Uniramia - Symphyla Symphyla is yet other small myriapodous group that includes around 160 described species. These are also soil living forms and live in l

Define assessment of selenium status, Define Assessment of Selenium Status?...

Define Assessment of Selenium Status? Blood glutathione (GSH) peroxidase activity is directly related to blood selenium up to a level of 1.27 μmoles/L. Beyond this point, the a

A healthy potted pitcher plant, A healthy potted pitcher plant when kept in...

A healthy potted pitcher plant when kept in a green house with favourable conditions of light, temperature, soil and water showed poor growth although there was no infection. Give

Determine about the disease - brain tumor, Determine about the disease - br...

Determine about the disease - brain tumor Tumor, or neoplasm, is a mass of new tissue that persists and grows independently of its surrounding structures and has no physiologic

Toxic agents present in which food, Toxic agents present in food which inte...

Toxic agents present in food which interfere with thyroxine synthesis lead to the development of: 1. toxic goitre 2. cretinism 3. simple goitre 4. thyrotoxicosis si

Explain kidney transplant, Consider the following four statements (a - d) r...

Consider the following four statements (a - d) regarding kidney transplant and select the two correct ones out of these. 1. Even if a kidney transplant is proper the recipient m

Patient and probe positioning, Patient Positioning The patient  should...

Patient Positioning The patient  should be  in  the  left lateral position as  this brings the heart into contact with chest wall. The left arm is extended behind  the head  t

How to produce a similar sickling effect, Which of the following amino acid...

Which of the following amino acids would you expect to produce a similar sickling effect if placed at position 6? Select all that apply. 1. Arginine 2. Leucine 3. Lysine

Biological responses controlled by phytochrome, Biological Responses Contro...

Biological Responses Controlled by Phytochrome Phytochrome responses are those which are controlled reversibly by red and far-red light. These can be broadly categorised as:

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd