Download Rough Endoplasmic Reticulum (RER)

Rough Endoplasmic
Reticulum
By Valeria Lemus
Biology 1125-001
Endoplasmic Reticulum
(ER)
 Endoplasmic means “with in the cytoplasm” and reticulum is
Latin for “a little net”.
 The endoplasmic reticulum is a network of folded membranes
that form channels.
 Makes protein and lipid components.
 Consists of a smooth ER and a rough ER.
Rough Endoplasmic
Reticulum
 Gets it’s name from its pebbly surface appearance.
 Can only be seen under an electron microscope.
 The RER is dotted with ribosomes.
 The RER is involved with protein production, protein
folding, quality control and dispatch.
Functions:
 They produce and process specific proteins
 Consists of network-like tunnels with tubules, vesicles
which is composed together by the cytoskeleton of the
cell.
Process:
 The ribosomes are attached to the membrane of the
ER.
 As the ribosome builds the amino acid chain, the chain
is pushed into the ER.
 When the protein is complete, the rough ER pinches off
a vesicle.
 That vesicle, a small membrane bubble, can move to
the cell membrane or the Golgi apparatus.
References
 "Endoplasmic Reticulum - Wrapping It Up."
Biology4Kids.com: Cell Structure: Endoplasmic
Reticulum. N.p., n.d. Web. 17 Mar. 2014.
 "Molecular Expressions Cell Biology: Endoplasmic
Reticulum." Molecular Expressions Cell Biology:
Endoplasmic Reticulum. N.p., n.d. Web. 17 Mar. 2014.
 Mason, Kenneth A., Jonathan B. Losos, Susan R. Singer,
Peter H. Raven, and George B. Johnson. Biology. N.p.:
n.p., n.d. Print.