205304-87-6

205304-87-6 structure

Name: Tubulysin B
Chemical Name: Tubulysin B
CAS Number: 205304-87-6
Molecular Formula: C₄₂H₆₃N₅O₁₀S
Molecular Weight: 830.042
Catalog: Signaling Pathways Apoptosis Apoptosis
Create Date: 2018-07-05 21:40:02
Modify Date: 2025-08-25 07:06:48
Tubulysin B is a highly cytotoxic peptide and potent microtubule destabilizing agents isolated from the myxobacteria Archangium geophyra and Angiococcus disciformis. Tubulysin B has IC50 values in the picomolar range against many cancer cell lines, including those with multidrug resistant properties[1].Tubulysin B is a cytotoxic activity tubulysin which inhibits tubulin polymerization and leads to cell cycle arrest and apoptosis[2].

Name	Tubulysin B
Synonyms	(2S,4R)-4-[({2-[(1R,3R)-1-Acetoxy-3-{[(butyryloxy)methyl](N-{[(2R)-1-methyl-2-piperidinyl]carbonyl}-L-isoleucyl)amino}-4-methylpentyl]-1,3-thiazol-4-yl}carbonyl)amino]-5-(4-hydroxyphenyl)-2-methylpentanoic acid Tubulysin B Pentanoic acid, 4-[[[2-[(1R,3R)-1-(acetyloxy)-4-methyl-3-[[(2S,3S)-3-methyl-2-[[[(2R)-1-methyl-2-piperidinyl]carbonyl]amino]-1-oxopentyl][(1-oxobutoxy)methyl]amino]pentyl]-4-thiazolyl]carbonyl]amino]-5-(4-hydroxyphenyl)-2-methyl-, (2S,4R)-

Description	Tubulysin B is a highly cytotoxic peptide and potent microtubule destabilizing agents isolated from the myxobacteria Archangium geophyra and Angiococcus disciformis. Tubulysin B has IC50 values in the picomolar range against many cancer cell lines, including those with multidrug resistant properties[1].Tubulysin B is a cytotoxic activity tubulysin which inhibits tubulin polymerization and leads to cell cycle arrest and apoptosis[2].
Related Catalog	Signaling Pathways >> Apoptosis >> Apoptosis Research Areas >> Cancer Signaling Pathways >> Cell Cycle/DNA Damage >> Microtubule/Tubulin Signaling Pathways >> Cytoskeleton >> Microtubule/Tubulin
In Vitro	Tubulysin B has IC50s of 0.6 and 0.9 nM against KB and A549 tumors cell lines, respectively.
References	[1]. Leamon CP, et al. Prostate-Specific Membrane Antigen-Specific Antitumor Activity of a Self-Immolative Tubulysin Conjugate. Bioconjug Chem. 2019 Jun 19;30(6):1805-1813. [2]. Vlahov IR, et al. Acid mediated formation of an N-acyliminium ion from tubulysins: a new methodology for the synthesis of natural tubulysins and their analogs. Bioorg Med Chem Lett. 2011 Nov 15;21(22):6778-81.