Secretory proteins, Biology

Assignment Help:

Proteins destined to be secreted from the eukaryotic cell are synthesized by ribosomes bound to the RER (rough endoplasmic reticulum). As the protein is synthesized it is translocated withthe rough endoplasmic reticulum membrane into the lumen of the rough endoplasmic reticulum where it folds into its last conformation.  The ER then buds off vesicles which handle the protein to the Golgi apparatus also called as the Golgi complex that is shown in the figure. The Golgi has a cis face (where vesicles enter) and a Tran's face (where vesicles leave). Thus the RER vesicles fuse with the cis compartment of the Golgi and releasing the protein into the Golgi lumen.  The protein then moves by the Golgi complex to the Trans compartment being changes en route through the addition of carbohydrate residues (glycosylation,).

 

373_22.png

Figure:  Synthesis and exocytosis of secretory proteins; see text for details. The ribosomes attached to the RER are represents as filled-in circles while the open circles in the lumen of the RER, vesicles and Golgi complex show secretory protein molecules.

 


Related Discussions:- Secretory proteins

Nekton - aquatic ecosystem, Nekton - Aquatic Ecosystem This group cont...

Nekton - Aquatic Ecosystem This group contains animals which are swimmers. The nektons are relatively large and powerful as they have to overcome the water currents. The anima

What is phylum hemichordata, What is Phylum Hemichordata ? The name "he...

What is Phylum Hemichordata ? The name "hemi"; (meaning "half") provides a clue to these animals, which have some of the features of chordates, and some features that are chara

Explain about the connecting models and data, Explain about the Connecting ...

Explain about the Connecting models and data? Perhaps the most dramatic change in quantitative environmental biology in recent years has been the burgeoning progress in the dir

Protein necessity, Proteins necessity They are called as body builde...

Proteins necessity They are called as body builders. The proteins are used in various metabolic pathways and body building. They help in repairing the tissues of the b

Continuous wave doppler, In continuous wave Doppler, the transducer has tw...

In continuous wave Doppler, the transducer has two Doppler crystals, one to constantly transmit and one to continuously receive. As a result of this continuous mode of tra

What are the fat requirements of athletes, What are the Fat Requirements of...

What are the Fat Requirements of athletes? Fats are the body's other major energy source. It  is  a  well  known  fact  that fat  is  a highly concentrated source of energy

Fungi, a soil surface of 10cm2 may contain what type of hyphae?

a soil surface of 10cm2 may contain what type of hyphae?

Nutritiona, Describe the tasks of various body systems in breaking down car...

Describe the tasks of various body systems in breaking down carbohydrates into glucose to fuel the cells work

Protozoa, general charactres and classfication

general charactres and classfication

Importance of counselling for diabetic patient, Q. Importance of counsellin...

Q. Importance of counselling for diabetic patient? Diabetes is a life-long illness. Life style modification and precautions taken by the patient can prevent complications and i

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