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

Cotyledon, Cotyledon is a leaf-like structure which is present in the seed...

Cotyledon is a leaf-like structure which is present in the seeds of the flowering plants; it appears during seed germination and sometimes is referred to as the seed leaf.

What is saliva, What is Saliva Saliva   is  the colourless  viscous  f...

What is Saliva Saliva   is  the colourless  viscous  fluid.  It  helps  in  swallowing the  food  by lubricating the food and the neutral pH of saliva prevents the decalcifica

What is ecosystem, Question 1 Write a short note on the following         ...

Question 1 Write a short note on the following                       1 Angiosperms                       2 Meristematic tissue Question 2 What is ecosystem? List and explain

How dynamic biological processes represented as network, How dynamic biolog...

How dynamic biological processes represented as network? Many dynamic biological processes throughout a wide range of ecological scales are easily represented as dynamical netw

Osmotic and ionic regulation, Osmotic and Ionic Regulation The  ammono...

Osmotic and Ionic Regulation The  ammonotelism, ureotelism and uricotelism are the adaptations of the animals for the removal of toxic nitrogenous wastes and thereby maintain

Explain the alterations occurring in fish, Alterations occurring in fish ...

Alterations occurring in fish The skeletal muscle of fish consists of short fibers arranged between sheets of connective tissue. The connective tissue in the fish muscle is les

What is consciousness, The importance of the brain in our everyday lives ca...

The importance of the brain in our everyday lives can never be underestimated. The brain has physical properties that are in a constant state of flux. The brain never rests totally

#monocot and diocot seeds., can I know the difference between diocot and mo...

can I know the difference between diocot and monocot seeds in a plant

Difference between algae and protozoans, Q. What is the fundamental differe...

Q. What is the fundamental difference between algae and protozoans? The basic difference between algae and protozoans is the fact that algae are photosynthetic autotrophs while

How many cc of basaljel in the medicine cup, The doctor ordered 3 teaspoons...

The doctor ordered 3 teaspoons of Basaljel suspension in water or juice. How many cc of Basaljel (aluminum carbonate) should the nurse place in the medicine cup?

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