Explain repressors , Biology

Assignment Help:

Gene repressor proteins which inhibit the transcription of particular genes in eukaryotes also exist. They may act by binding either to control parts within the promoter region near the gene or at sites located a long distance away from the gene, called as silencers.  The repressor protein should inhibit transcription directly. One instance is the mammalian   thyroid   hormone   receptor   that,   in the absence   of   thyroid   hormone   represses   transcription   of   the   goal   genes. Furthermore, other repressors inhibit transcription by blocking activation.  This can be get  in one of several  ways:  by blocking  the DNA  binding  site for an activator  protein, through binding to and masking  the activation  domain of the activator  factor,  or  by  forming  a  non-DNA  binding  complex  with  the  activator protein. Several instance of every mode of action are known.

 


Related Discussions:- Explain repressors

Annelida, what are the characteristics of polychaeta

what are the characteristics of polychaeta

Explain deformaties of the cliest wall should be noted, Explain Deformaties...

Explain Deformaties of the Cliest wall should be Noted a) Pectus carinatum (pigeon chest): may be associated with Marfan syndrome. b) Pectus excavatum: commonly seen in Marfan

Head stream of highland brook zone, Head stream of Highland brook zone ...

Head stream of Highland brook zone This is formed by a number of small streams, which originate from a marsh, a spring or a glacier. This is a small shallow zone with an irreg

Which is needed to stimulate the activity, Synthesis of fatty acids require...

Synthesis of fatty acids requires the movement of citrate out of the mitochondria. This occurs under conditions of high levels of acetyl CoA which is needed to stimulate the activi

Respiratory chain to produce atp, Decreasing power is available in a cell b...

Decreasing power is available in a cell both as NADPH and NADH but these have quite distinct roles. NADH is oxidized by the respiratory chain to produce ATP by oxidative phosphoryl

Suction force of the plant cell, What is meant by suction force of the plan...

What is meant by suction force of the plant cell? Does the suction force facilitate or make difficult the entrance of water in the cell? Ans) The suction force (SF) is the osmot

Matter - living and non-living, Matter - Living and Non-Living Our uni...

Matter - Living and Non-Living Our universe is made up of two basic components:, matter and. energy. Matter, as you know, has mass; it occupies space. You can touch matter. It

What are important terms in accommodation and convergence, What are importa...

What are important terms in accommodation and convergence? Accommodation and Convergence In this section some important terms are included: a. How a person is able to foc

#title.classification., merits and demerits system of classification by Lin...

merits and demerits system of classification by Linnaeus

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