Biomaterial Database

What Doesn't Kill You Makes You Stronger. 2018

Andrea K H Stavoe, and Erika L F Holzbaur

Department of Physiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA.

The microtubule-severing proteins spastin and katanin were long thought to destabilize microtubules. Recent work demonstrates that these enzymes inflict nano-damage on the microtubule lattice that is then rapidly repaired by new GTP-tubulin incorporation, for a net stabilization of the polymer, a process that has implications for neurodegenerative disease.

UI	MeSH Term	Description	Entries
D008870	Microtubules	Slender, cylindrical filaments found in the cytoskeleton of plant and animal cells. They are composed of the protein TUBULIN and are influenced by TUBULIN MODULATORS.	Microtubule
D006160	Guanosine Triphosphate	Guanosine 5'-(tetrahydrogen triphosphate). A guanine nucleotide containing three phosphate groups esterified to the sugar moiety.	GTP,Triphosphate, Guanosine
D000074201	Katanin	An enzyme (AAA ATPase) consisting of the 60 kDa ATPase subunit (p60 subunit A1) which severs MICROTUBULES, and an 80 kDa accessory protein (p80 subunit B1), which targets the enzyme to the CENTROSOME. It releases microtubules from the mitotic SPINDLE POLES to allow depolymerization and poleward motion of chromosomes. It is also a regulator of microtubule dynamics in NEURONAL OUTGROWTH.
D000251	Adenosine Triphosphatases	A group of enzymes which catalyze the hydrolysis of ATP. The hydrolysis reaction is usually coupled with another function such as transporting Ca(2+) across a membrane. These enzymes may be dependent on Ca(2+), Mg(2+), anions, H+, or DNA.	ATPases,Adenosinetriphosphatase,ATPase,ATPase, DNA-Dependent,Adenosine Triphosphatase,DNA-Dependent ATPase,DNA-Dependent Adenosinetriphosphatases,ATPase, DNA Dependent,Adenosinetriphosphatases, DNA-Dependent,DNA Dependent ATPase,DNA Dependent Adenosinetriphosphatases,Triphosphatase, Adenosine
D014404	Tubulin	A microtubule subunit protein found in large quantities in mammalian brain. It has also been isolated from SPERM FLAGELLUM; CILIA; and other sources. Structurally, the protein is a dimer with a molecular weight of approximately 120,000 and a sedimentation coefficient of 5.8S. It binds to COLCHICINE; VINCRISTINE; and VINBLASTINE.	alpha-Tubulin,beta-Tubulin,delta-Tubulin,epsilon-Tubulin,gamma-Tubulin,alpha Tubulin,beta Tubulin,delta Tubulin,epsilon Tubulin,gamma Tubulin