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The rough endoplasmic reticulum works in concert with the Golgi complex to target new proteins to their proper destinations. The second method of transport out of the endoplasmic reticulum involves areas called membrane contact sites, where the membranes of the endoplasmic reticulum and other organelles are held closely together, allowing the ...
Masses of rough endoplasmic reticulum also occur in some non-neuronal cells, where they are referred to as ergastoplasm, basophilic bodies, [1] or chromophilic substance. [4] While these organelles differ in some ways from Nissl bodies in neurons, [5] large amounts of rough endoplasmic reticulum are generally linked to the copious production of ...
Secretory pathway diagram, including nucleus, endoplasmic reticulum and golgi apparatus. Nuclear membrane; Nuclear pore; Rough endoplasmic reticulum (rER) Smooth endoplasmic reticulum (sER) Ribosome attached to rER; Macromolecules; Transport vesicles; Golgi apparatus; Cis face of Golgi apparatus; Trans face of Golgi apparatus; Cisternae of ...
The soma of a neuron (i.e., the main part of the neuron in which the dendrites branch off of) contains many organelles, including granules called Nissl granules, which are composed largely of rough endoplasmic reticulum and free polyribosomes. [5] The cell nucleus is a key feature of the soma.
Abundant rough endoplasmic reticulum combined with a well-developed Golgi apparatus makes plasma cells well-suited for secreting immunoglobulins. [4] Other organelles in a plasma cell include ribosomes, lysosomes, mitochondria, and the plasma membrane.
Association and maturation of rRNA and r-proteins result in the formation of the 40S (small) and 60S (large) subunits of the complete ribosome. These are exported through the nuclear pore complexes to the cytoplasm, where they remain free or become associated with the endoplasmic reticulum, forming the rough endoplasmic reticulum (RER). [20] [21]
The Golgi apparatus (/ ˈ ɡ ɒ l dʒ i /), also known as the Golgi complex, Golgi body, or simply the Golgi, is an organelle found in most eukaryotic cells. [1] Part of the endomembrane system in the cytoplasm, it packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination.
The nucleolus within the nuclear envelope is the location of ribosome synthesis. The destination of synthesized ribosomes for protein translation is rough endoplasmic reticulum (rough ER), which is connected to and shares the same membrane with the nucleus. The Golgi body is also near the rough ER for packaging and redistributing. Likewise ...