Results for: glycosylation

What are Three ways to control enzyme?

One way to control an enzyme is through post-translational modification such as phosphorylation or glycosylation. Other ways to control enzymes are through enzyme induction, inhibition, or by compartmentalizing the metabolic pathways. Full Answer

What is endoplasmic reticulum role?

First phases of glycosylation of proteins proceeds there, lipids are synthetized there and mainly, intermembrane proteins and proteins to be excreted out from the cell are synthetized into inside of ER (ribosomes synthetizing these proteins land on the ER surface… Full Answer

What are unprocessed proteins?

Proteins are formed in ribosomes in the cytoplasm as unprocessed proteins. They processed to form additional bonds, binding extra chemical moieties such as glycosylation, phosphorylation that helps them to make stable 2D and 3D conformations. This process is accompanied by… Full Answer

Why is lung capacity decreased in the elderly?

The lung is essentially an "outdoor organ" vulnerable to the environment. Biochemically, aging is caused by both endogenous and exogenous free radical injury, inflicted by an over-balance of oxidants with respect to anti-oxidants. Glucose may also play a role in… Full Answer

What are the four stages of protein synthesis?

Initiation: ribosome starts translation at start codon (AUG) Elongation: amino acid chain gets longer and longer as tRNA bring corresponding amino acids Termination: ribosome ends translation at stop codon or termination sequence (UAG, UGA, UAA) Post-translational Modification: protein splicing occurs… Full Answer

What makes protein for cells?

For a cell to synthesise proteins, there are a few steps involved. Firstly, the DNA which codes for that protein would be transcribed to form mRNA. The mature mRNA would then be transported out of the nucleus to the cytosol… Full Answer

Post translational modification er?

Some proteins are targeted to the ER by a signal sequence which is recognised by an SRP (signal recognition particle). The protein is translated into the ER through the translocon. Modifications: -Signal sequence is cleaved by a signal transpeptidase. -Protein… Full Answer

Where are proteins assembled?

Proteins are assembled in the cytoplasm (outside the nucleus where DNA is stored in most Eukaryotes) in a molecular machine called the Ribosome. The ribosome is itself partly built up of proteins, and partly (the biggest part) of rRNA. Ribosomes… Full Answer