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All About the Smooth Endoplasmic Reticulum and its …

The Endoplasmic Reticulum that does not have Ribosomes attached to its surface is known as smooth endoplasmic reticulum.

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Rough Endoplasmic Reticulum - BiologyWise

Another type of endoplasmic reticulum is Sarcoplasmic Reticulum, which is a type of specialized SER that can be found in smooth, as well as striated muscles.

SER does not contain this cell organelle, and hence the name smooth endoplasmic reticulum.

A Comparison of the Rough and Smooth Endoplasmic Reticulum
Eukaryotic cells are believed to be the result of an endosymbiotic event whereby an anaerobic archaeon engulfed an aerobic bacterium.

The Structure and Function of the Endoplasmic Reticulum

Smooth Endoplasmic Reticulum The smooth endoplasmic reticulum is highly curved and tubular [12].

However, this organelle is constituted of three layers: rough endoplasmic reticula (synthesizes proteins), smooth endoplasmic reticulum (synthesizes and metabolizes lipids and steroids, and regulates calcium concentration), and sarcoplasmic reticulum (regulates calcium levels).

ER is an intense network of interconnected tubules, vesicles, and fluid-filled sacs surrounding the nuclear membrane, which spreads all across the cell cytoplasm.

If you were looking for a rough endoplasmic reticulum analogy, then you can very well relate it to a highway with intermittent stations, where the proteins are being synthesized and transported to the cell membrane.

Rough Endoplasmic Reticulum (RER) Facts


Rough ER is made up of convoluted and sealed sacs, which are studded with membrane-bound ribosomes on the outer surface.

13/09/2006 · Smooth endoplasmic reticulum

A scanning electron micrograph of the smooth endoplasmic reticulum from an adrenal cortical cell.

[15] The Origin of the Endoplasmic Reticulum The rough ER exports folded proteins within vesicles via the secretory pathway:
Rough ER --> Golgi apparatus --> Secretory vesicles --> Target [3]

This transport is bidirectional; it allows for the recycling of valuable, soluble proteins such as BiP.

This organelle surrounds the nucleus
In Plant Cells it takes up 10% of the entire cell’s volume, with its lumen
While in the animal cell it takes more than half of the membrane of an animal cell The Endoplasmic Reticulum is the site where all production of the transmembrane proteins and lipids for the ER, Golgi Apparatus, Lysomes, Endosomes, and secretory vesicles.

(2007), "Endoplasmic Reticulum, Protein Synthesis and Translocation Machinery", in Michalak, M.
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  • "Endoplasmic Reticulum, Protein Synthesis ..

    To perform the function of detoxification, Smooth Endoplasmic Reticulum (SER) doubles its surface area.

  • smooth endoplasmic reticulum ..

    The smooth endoplasmic reticulum is more prominent in some cells than in others, depending on cell function [2].

  • Endoplasmic Reticulum Functions and Types - …

    More Smooth Endoplasmic Reticulum 2+ The smooth ER sequesters Ca2+ ions from the cytosol for storage in the ER lumen.

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endoplasmic reticulum | Definition, Function, & …

Endoplasmic Reticulum (ER) Membrane system of folded sacs and channels Site for protein and lipid synthesis Rough ER- where ribosomes attach Smooth ER- where lipids are synthesized

Difference Between Smooth Endoplasmic Reticulum …

The enzymes are in the ER membrane facing the cytosol where their substrates are present [2].

The smooth endoplasmic reticulum sequesters almost all of the Ca from the cytosol [2,12].

Related to Endoplasmatic reticulum: Smooth endoplasmic ..

The endoplasmic reticulum (ER), the main membrane system in eukaryotic cells, is the place where protein synthesis takes place. The model shows a section of the whole system in order to make the membrane structure visible and takes into account the difference between the rough ER (with the attached ribosomes in red) and the smooth ER. It is usual for the reticulum to completely surround the cell nucleus (white in the model).

The smooth endoplasmic reticulum: ..

Contents Introduction: 4
The Smooth ER: 8
The Rough ER: 14
Comparison of the Rough and Smooth ER: 28
Origins of the Endoplasmic Reticulum: 30
Interactive Quiz: 32
References: 33 Self-Directed Learning Question Compare and contrast the rough and the smooth endoplasmic reticulum.

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