O-linked oligosaccharides , Biology

Assignment Help:

Most proteins made by ribosomes on the RER (rough endoplasmic reticulum) are glycoproteins, which is they hold short chains of carbohydrates (oligosaccharides) covalently related to them during passage by the Golgi and RER complex. Two major types of oligosaccharide linkage exist:

?   O-linked oligosaccharides are commonly attached to the protein through O-glycosidic bonds to OH groups of Thr or Ser side chains. The residues which are changed are frequently in a region of the polypeptide chain which is rich in Thr and Ser residues. In plant glycoproteins, the OH sets of hydroxyproline (Hyp) residues can be glycosylated, by the hydroxylysine (Hyl) reduce in the mammalian protein collagen can be O-glycosylated.

?   N-linked oligosaccharides are related to the protein via N-glycosidic will bonds to the NH2   where the Asn occurs in the sequence Asn-X-Ser (or Thr) where X is many amino acids except Pro. If the Asn is N-glycosylated the Thr or Ser residue in this motif is not O-glycosylated.

 


Related Discussions:- O-linked oligosaccharides

Difference between ulcerative colitis and crohns disease, What is the diffe...

What is the difference between ulcerative colitis and Crohn's disease? The differences between the two include: I) Anatomic distribution of the inflammatory process: Crohn'

Enumerate the working of mri scanner, Enumerate the working of MRI scanner ...

Enumerate the working of MRI scanner The MRI scanner can be 'tuned' to detect the very subtle disturbances to the magnetic field induced by the different proportions of oxygen

Explain use of food additives - method of food preservation, Explain Use of...

Explain Use of food Additives - method of food preservation? Food additives may be defined as substances added intentionally to food, generally, in small quantities to improve

Noteworthy features of the nervous system of arthropods, Q. What are the no...

Q. What are the noteworthy features of the nervous system of arthropods? In arthropods the nervous system has more sophisticated sensory receptors with well-advanced cephalizat

What are the enzymes, Q. What are the enzymes? What is the significance of ...

Q. What are the enzymes? What is the significance of enzymes for living beings? Enzymes are proteins that are catalysts of the chemical reactions. From Chemistry it is known as

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

What is immuno adsorption, It is elimination of an antigen or antibody from...

It is elimination of an antigen or antibody from a sample by the process of adsorption, to which the complimentary antigen or antibody is bound.

Storage and distribution - sterilization process, Packs, pouches, and casse...

Packs, pouches, and cassettes are sometimes wet after completing the sterilization process. This is a problem usually associated with the use of paper or paper/ plastic wraps in t

Aortic allograft -biological valves, Aortic Allograft (Homograft) :  ...

Aortic Allograft (Homograft) :  In the earlier years fresh antibiotic preserved aortic allografts were tried. As the shelf life is limited, availability of all sizes at all t

Explain about aerobic respiration, Which is the cell organelle that is spec...

Which is the cell organelle that is specialized in aerobic respiration? The cell organelles that are specialized in aerobic respiration are the mitochondria. Cell Respiratio

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