Endoplasmic Reticulum Analogy


The surface of the rough endoplasmic reticulum (often abbreviated RER or Rough ER) (also called granular endoplasmic reticulum) is studded with protein-manufacturing ribosomes giving it a "rough" appearance (hence its name). The binding site of the ribosome on the rough endoplasmic reticulum is the translocon. However, the ribosomes are not a stable part of this organelle's structure as they are constantly being bound and released from the membrane. A ribosome only binds to the RER once a specific protein-nucleic acid complex forms in the cytosol. This special complex forms when a free ribosome begins translating the mRNA of a protein destined for the secretory pathway. The first 5–30 amino acids polymerized encode a signal peptide, a molecular message that is recognized and bound by a signal recognition particle (SRP). Translation pauses and the ribosome complex binds to the RER translocon where translation continues with the nascent (new) protein forming into the RER lumen and/or membrane. The protein is processed in the ER lumen by an enzyme (a signal peptidase), which removes the signal peptide. Ribosomes at this point may be released back into the cytosol; however, non-translating ribosomes are also known to stay associated with translocons.

Cell Structure & Function - ppt video online download

Cell Analogy Project by Jordan Lopez

Cell Structure Organelles. - ppt video online download

Mind Stretcher – Copy Both - ppt video online download

Cellular Structure & Function - ppt download

Endoplasmic reticulum analogy / Dildo huge insert

Cell Analogy Example

Bio cell project

Bio cell project

How is a Cell like a City Cell Analogies. - ppt download

Cell Organelle Analogies - ppt download

Bio cell project

Retículo endoplasmático liso - Wikipedia, la enciclopedia ...

Cell Organelle Analogies

Cell Organelle Analogies

Cell Analogy iPhone. - ppt video online download

Cell Analogy Shawn Sharrak. - ppt video online download

Cell Analogy

Think of a City How does it operate? Who protects the city ...

Cell project Jonathan haims 7 w

PPT - Cell Parts Analogy: Shopping Mall PowerPoint ...

Cells and Organelles The building blocks of Life - ppt ...

1. “VOLUME” Cytosol and Cytoplasm - ppt download

Cell Analogies (SpongeBob Theme) - ppt video online download

The cell factory ppt

Animal analogies ws version

Cell Structure & Function - ppt video online download

Cell analogy project