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The endoplasmic reticulum (ER) is a part of a transportation system of the eukaryotic cell, and has many other important functions such as protein folding. It is a type of organelle made up of two subunits – rough endoplasmic reticulum ( RER ), and smooth endoplasmic reticulum ( SER ).
There are two distinct, though connected, regions of ER that differ in structure and function: smooth ER and rough ER. The rough endoplasmic reticulum is so named because the cytoplasmic surface is covered with ribosomes, giving it a bumpy appearance when viewed through an electron microscope. The smooth ER appears smooth since its cytoplasmic ...
translation and folding of new proteins (rough endoplasmic reticulum), expression of lipids (smooth endoplasmic reticulum) single-membrane compartment: all eukaryotes: rough endoplasmic reticulum is covered with ribosomes (which are bound to the ribosome membrane), has folds that are flat sacs; smooth endoplasmic reticulum has folds that are ...
The nascent peptide chains are translocated into the rough endoplasmic reticulum, where they are modified. Lysosomal soluble proteins exit the endoplasmic reticulum via COPII -coated vesicles after recruitment by the EGRESS complex ( E R-to- G olgi r elaying of e nzymes of the ly s osomal s ystem), which is composed of CLN6 and CLN8 proteins.
In eukaryotic cells, ribosomes are often associated with the intracellular membranes that make up the rough endoplasmic reticulum. Ribosomes from bacteria, archaea, and eukaryotes (in the three-domain system) resemble each other to a remarkable degree, evidence of a common origin. They differ in their size, sequence, structure, and the ratio of ...
Here at 538, we think a big part of our jobs during election season is to explore and explain how much trust you should put in all the people telling you who's going to win.
A good example is an endocrine tissue found in the islets of Langerhans in the pancreas. This tissue contains many cell types that are defined by which hormones they produce. Secretory vesicles hold the enzymes that are used to make the cell walls of plants , protists , fungi , bacteria and archaea cells as well as the extracellular matrix of ...
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