Cell Biology Glossary

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--Mark Hill 08:40, 20 March 2009 (EST)This is a working page for developing a quick glossary of cell biology designed for students at undergraduate level.


A

actin cytoskeletal protein forming the backbone of the cytoplasmic microfilament system. Exists as globular actin monomer (G-actin) and microfilament polymer (F-actin).


actin-binding protein family of proteins that specifically bind actin within microfilament polymer (F-actin) or globular actin monomer (G-actin).


Actin Depolymerizing Factor (ADF) alternative name Cofilin, actin-binding protein that can disassemble actin by severing and depolymerizing actin filaments.

Arp2/3 a protein complex essential for actin assembly, generating new filaments and branch points. It is involved in cell motility in many cell processes.

C

cell wall structure present outside bacteria and plant cells. Gram-positive bacteria, composed of the cytoplasmic membrane and peptidoglycan layer. Gram-negative bacteria, have an additional outer membrane composed of integral membrane proteins, lipids, and lipopolysaccharides. Lecture - Eukaryotes and Prokaryotes


centrosome cytoplasmic microtubule organizing centre and thought to also regulate cell cycle events. PMID: 18437411


cofilin, alternative name Actin Depolymerizing Factor, actin-binding protein that can disassemble actin by severing and depolymerizing actin filaments.


correlative light/electron microscopy (CLEM) microscopy technique combining fluorescence light microscopy and electron microscopy for simultaneous observation of subcellular structures. Lab 2 - Microscopy Methods | PMID: 18817522


Cyclase-Associated Protein (CAP) actin-binding protein that works in conjunction with Cofilin.

D

Dynamin1 nervous system member of the dynamin super-family of GTPases involved in many cellular pathways, implicated in clathrin-mediated endocytosis. Lecture - Cell Import - Endocytosis

Dynamin2 ubiquitously expressed member of the dynamin super-family of GTPases involved in many cellular pathways, implicated in clathrin-mediated endocytosis. Lecture - Cell Import - Endocytosis

H

hydrogenosome cytoplasmic anaerobic organelle related to mitochondria adaptated to extreme cellular anaerobic lifestyle. Lecture - Eukaryotes and Prokaryotes |

K

keratin cytoskeleton intermediate filament protein of epithelial cells required for cell mechanical stability and integrity. Humans have 54 functional keratin genes. Lecture - Cytoskeleton - Intermediate Filaments | PMID: 18461349

L

lipid droplets cytoplasmic phospholipid enclosed depots of neutral lipids found in many cell types. PMID: 18546013


lysosome cytoplasmic organelle for the degradation of both endocytosed extracellular and autophagy of intracellular materials. Lecture - Cell Import - Endocytosis

M

mitochondria cytoplasmic double membrane organelle, main functions include energy production from aerobic cell respiration and cell death by apoptosis. Lecture - Cell Energy Production - Mitochondria

P

proteasome a protein complex that degrades cellular proteins by proteolysis. Lecture - Cell Import - Endocytosis

protein bodies (PBs) cytoplasmic plant organelles that accumulate storage proteins in seeds, formed from endoplasmic reticulum or vacuole.

pemphigus human severe blistering skin disease caused by autoantibodies against desmosomal cadherins. Lecture - Cytoskeleton - Intermediate Filaments

S

shiga toxin a bacterial protein toxin produced by Shigella dysenteriae is transported directly from the plasma membrane to the endoplasmic reticulum by early endosomes and the Golgi apparatus.

T

trypanosomes are unicellular protozoan parasites that infect humans, animals, insects, and plants. Lecture - Eukaryotes and Prokaryotes | PMID: 18462016

V

verotoxins bacterial protein toxins produced by enterohemorrhagic strains of Escherichia coli these are transported directly from the plasma membrane to the endoplasmic reticulum by early endosomes and the Golgi apparatus. PMID:11514628