What is nuclear proteins , Biology

Assignment Help:

The nucleus has an inner and an outer membrane and is perforated through 3000-4000 nuclear pores. Each pore having of a nuclear pore complex of more than 100 several proteins organized in a hexagonal array.  Whereas little  molecules  can  pass  by  the  pore  by  free  diffusion and  large  proteins entering  the nucleus need a nuclear localization  signal. That is four to eight amino  acids long and is rich in the positively  charged  amino  acids arginine and lysine as well as commonly  having  proline,  and is situated  internally  within the  polypeptide   chain.  The protein is taken by the pore in an ATP- requires step and enters the nucleus without cleavage of the localization signal.

1810_22.png

                         Figure:  Uptake of proteins into the mitochondrial matrix


Related Discussions:- What is nuclear proteins

Surgical considerations in anterior mandibular region, Surgical Considerati...

Surgical Considerations in anterior mandibular region During the harvesting of a monocortical symphyseal block of bone from the mandibular symphysis region (autogenous block bo

Is all the cartilage in the body the same, Q. Is all the cartilage in the b...

Q. Is all the cartilage in the body the same? There are 3 types of cartilage in the human body: 1) hyaline cartilage; 2) elastic cartilage and 3) fibrocartilage. Hyaline cartil

Define effect of enery on quality and quantity of human milk, Define Effect...

Define Effect of Enery on quality and quantity of human milk? Energy: In case of chronic under nutrition, an association between postpartum weight loss and lower energy transfe

Bacterial diseases-actinobacillosis, Actinobacillosis Synonym   : Woo...

Actinobacillosis Synonym   : Wooden Tongue Causative organism                  : Actinobacillus lignieresii Species affected                   : Ruminants, cattle and s

Define the axon of a neuron, Consider an axon of a neuron. At time=t1, its ...

Consider an axon of a neuron. At time=t1, its voltage is at threshold for an action potential; at time=t2, its voltage is at 0 millivolts prior to the peak of that action potential

Estrous cycle - reproduction, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Embyonic development, What are the different patterns of cleavage (segmenta...

What are the different patterns of cleavage (segmentation of fertilized egg cell)?

Protozoa, explanation of examples of protozoa

explanation of examples of protozoa

Brain region responsible for the equilibrium of the body, Q. Which is the b...

Q. Which is the brain region responsible for the coordination and equilibrium of the body? In the central nervous system the cerebellum is the main controller of the motor equi

Illustrate erythropoietin, Define Erythropoietin A. acts by stimulating...

Define Erythropoietin A. acts by stimulating the production of red blood cells by the peritubular interstitial cells of the kidney cortex. B. is secreted by cells in the bon

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