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T7765

Sigma-Aldrich

Tunicamycin from Streptomyces sp.

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CAS Number:
Beilstein/REAXYS Number:
6888090
MDL number:
PubChem Substance ID:
NACRES:
NA.77

Quality Level

solubility

95% ethanol: soluble 1 mg/mL, clear to faintly hazy
THF: soluble <1 mg/mL
dioxane: soluble <1 mg/mL
DMF: soluble >10 mg/mL
pyridine: >10 mg/mL
DMSO: soluble 4.9-5.1 mg/mL, clear to slightly hazy, colorless to yellow
methanol: slightly soluble 4.9-5.1 mg/mL
methanol: soluble 4.9-5.1 mg/mL, clear to slightly hazy, colorless to yellow
acetone: insoluble
aqueous base: insoluble
chloroform: insoluble
ethyl acetate: insoluble

antibiotic activity spectrum

fungi
viruses

mode of action

protein synthesis | interferes

storage temp.

2-8°C

SMILES string

CC(C)CCCCCCCC\C=C\C(=O)N[C@@H]1[C@@H](O)[C@@H](O)[C@@H](C[C@@H](O)[C@H]2O[C@H]([C@H](O)[C@@H]2O)N3C=CC(=O)NC3=O)O[C@H]1O[C@@H]4O[C@@H](CO)[C@H](O)[C@@H](O)[C@@H]4NC(C)=O

InChI

1S/C37H60N4O16/c1-18(2)12-10-8-6-4-5-7-9-11-13-23(45)39-26-30(50)27(47)21(54-36(26)57-35-25(38-19(3)43)29(49)28(48)22(17-42)55-35)16-20(44)33-31(51)32(52)34(56-33)41-15-14-24(46)40-37(41)53/h11,13-15,18,20-22,25-36,42,44,47-52H,4-10,12,16-17H2,1-3H3,(H,38,43)(H,39,45)(H,40,46,53)/b13-11+/t20-,21-,22+,25+,26-,27+,28+,29+,30-,31+,32-,33-,34-,35+,36+/m1/s1

InChI key

YJQCOFNZVFGCAF-WPTOCQRYSA-N

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1 of 4

This Item
654380T4540I0634
Tunicamycin from Streptomyces sp.

T7765

Tunicamycin from Streptomyces sp.

Triacsin C from Streptomyces sp.

T4540

Triacsin C from Streptomyces sp.

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

−20°C

storage temp.

2-8°C

solubility

95% ethanol: soluble 1 mg/mL, clear to faintly hazy, dioxane: soluble <1 mg/mL, pyridine: >10 mg/mL, methanol: slightly soluble 4.9-5.1 mg/mL, acetone: insoluble, chloroform: insoluble, THF: soluble <1 mg/mL, DMSO: soluble 4.9-5.1 mg/mL, clear to slightly hazy, colorless to yellow, aqueous base: insoluble, DMF: soluble >10 mg/mL, ethyl acetate: insoluble, methanol: soluble 4.9-5.1 mg/mL, clear to slightly hazy, colorless to yellow

solubility

DMSO: 10 mg/mL, DMF: soluble, pyridine: soluble

solubility

methanol: soluble 4.90-5.10 mg/mL, clear (Pale yellow to yellow), methanol: soluble 4.90-5.10 mg/mL, clear, pale yellow to yellow

solubility

DMSO: 10 mg/mL, ethanol: soluble

antibiotic activity spectrum

fungi

antibiotic activity spectrum

-

antibiotic activity spectrum

-

antibiotic activity spectrum

Gram-positive bacteria

mode of action

protein synthesis | interferes

mode of action

-

mode of action

enzyme | inhibits

mode of action

cell membrane | interferes

General description

Chemical structure: nucleoside
Contains homologues A,B,C, and D. Composition may vary from lot to lot. Actual content given on label.
Tunicamycin is an antibiotic and a glycosylation inhibitor. Its mode of action includes blocking human UDP-HexNAc:polyprenol-P HexNAc-1-P enzymes in the enzyme GlcNAc phosphotransferase (GPT). Glycosylation is a major post-translational modification that plays a critical role in glycoprotein folding, stability, and subcellular localization, as well as in the biological functions of the glycoprotein. Abnormal glycosylation has been identified as a signature of cancer and has been shown to play a significant role in tumor progression, metastasis, and chemoresistance. Research shows tunicamycin exhibits antitumor action. Furthermore, tunicamycin inhibition of N-glycosylation ultimately results in the build-up of unstructured proteins in the endoplasmic reticulum (ER) lumen, potentially leading to ER stress. Tunicamycin also exhibits antibacterial and antifungal actions. It blocks the formation of protein N-glycosidic linkages by inhibiting the transfer of N-acetylglucosamine 1-phosphate to dolichol monophosphate. Tunicamycin also Inhibits bacterial and eukaryote N-acetylglucosamine transferases and prevents the formation of N-acetylglucosamine lipid intermediates.

Application

Tunicamycin has been used to study the effect of N-linked glycosylation of human proton-coupled folate transporter (HsPCFT) in HeLa cells. Tunicamycin has also been used to study the functional effects of coxsackievirus and adenovirus receptor (CAR) glycosylation in COS-7 cells. Tunicamycin from Streptomyces sp. has been used to inhibit N-glycosylation in cell culture experiments.

Biochem/physiol Actions

Blocks the formation of protein N-glycosidic linkages.

Preparation Note

Tunicamycin dissolves in DMSO at 4.9-5.1 mg/ml and yields a clear to very slightly hazy, colorless to yellow solution. Furthermore, tunicamycin is soluble in DMF (>10 mg/ml), pyridine (>10 mg/ml), water (<5 mg/ml, pH 9.0), dioxane (<1 mg/ml) and THF. However, it is insoluble in other organic solvents such as acetone, chloroform, and ethyl acetate, and in aqueous solutions with pH <6. Aqueous solutions can be prepared from stock solutions by diluting with water at pH 8-10 or with buffers with pH >7, preferably >8. Tunicamycin will not dissolve in phosphate buffer, pH 8, at 1 mg/ml, even with heating, but solubility can be achieved by raising the pH to 9 and back titrating to pH 7-8.

pictograms

Skull and crossbones

signalword

Danger

hcodes

Hazard Classifications

Acute Tox. 1 Oral

Storage Class

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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Ersin Selcuk Unal et al.
Biochimica et biophysica acta, 1778(6), 1407-1414 (2008-04-15)
The human proton-coupled folate transporter (HsPCFT, SLC46A1) mediates intestinal absorption of folates and transport of folates into the liver, brain and other tissues. On Western blot, HsPCFT migrates as a broad band (~55 kDa), higher than predicted (~50 kDa) in
Ersin Selcuk Unal et al.
The Journal of biological chemistry, 284(26), 17846-17857 (2009-04-25)
This report addresses the functional role of His residues in the proton-coupled folate transporter (PCFT; SLC46A1), which mediates intestinal folate absorption. Of ten His residues, only H247A and H281A mutations altered function. The folic acid influx Kt at pH 5.5
V Shinde et al.
Cell death & disease, 7, e2085-e2085 (2016-02-06)
The molecular mechanism of autosomal dominant retinitis pigmentosa (ADRP) in rats is closely associated with a persistently activated unfolded protein response (UPR). If unchecked, the UPR might trigger apoptosis, leading to photoreceptor death. One of the UPR-activated cellular signaling culminating
Bei Zhou et al.
International journal of biological sciences, 15(9), 1905-1920 (2019-09-17)
The mechanisms of resistance to the targeted drug sorafenib in the treatment of hepatocellular carcinoma (HCC) are poorly understood. The purpose of this study was to investigate the mechanism of sorafenib resistance and to elucidate the role of melatonin in
Katherine J D Ashbourne Excoffon et al.
Journal of virology, 81(11), 5573-5578 (2007-03-23)
The coxsackievirus and adenovirus receptor (CAR) is both a viral receptor and homophilic adhesion protein. The extracellular portion of CAR consists of two immunoglobulin (Ig)-like domains, each with a consensus sequence for N-glycosylation. We used chemical, genetic, and biochemical studies

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