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C9492

Sigma-Aldrich

Chaetocin from Chaetomium minutum

≥95% (HPLC)

Synonym(s):

(+)-Chaetocin A

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About This Item

Empirical Formula (Hill Notation):
C30H28N6O6S4
CAS Number:
28097-03-2
Molecular Weight:
696.84
MDL number:
MFCD00133163
UNSPSC Code:
12352202
PubChem Substance ID:
24893002
NACRES:
NA.77

Quality Level

200

Assay

≥95% (HPLC)

form

powder

storage temp.

2-8°C

SMILES string

CN1C(=O)C23CC4(C(Nc5ccccc45)N2C(=O)C1(CO)SS3)C67CC89SSC(CO)(N(C)C8=O)C(=O)N9C6Nc%10ccccc7%10

InChI

1S/C30H28N6O6S4/c1-33-21(39)27-11-25(15-7-3-5-9-17(15)31-19(25)35(27)23(41)29(33,13-37)45-43-27)26-12-28-22(40)34(2)30(14-38,46-44-28)24(42)36(28)20(26)32-18-10-6-4-8-16(18)26/h3-10,19-20,31-32,37-38H,11-14H2,1-2H3

InChI key

PZPPOCZWRGNKIR-UHFFFAOYSA-N

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General description

Chaetocin is a fungal metabolite with antimicrobial and cytostatic activity. It belongs to the 3,6-epidithio-diketopiperazines class of which gliotoxin, sporidesmin, aranotin, oryzachloride, verticillin A and the melinacidins are members. Chaetocin is a molecular dimer of two five-membered rings cis fused.

Application

Chaetocin from Chaetomium minutum has been used to determine its effects on sensitization of various cells. It has also been used to determine the biological functions of OS-induced heterochromatin formation.

Biochem/physiol Actions

Chaetocin is a competitive inhibitor for S-adenosylmethionine. The specificity of chaetocin for SU(VAR)3-9 makes this compound an excellent tool for the study of heterochromatin-mediated gene repression.
Chaetocin is an antibacterial mycotoxin. It is a specific inhibitor of lysine-specific histone methyltransferase making the compound useful in the study of heterochromatin mediated gene repression. Chaetocin is a selective competitive inhibitor of thioredoxin reductase-1 (TrxR1), a putative mechanism of its anticancer activity.
Methyltransferase making the compound useful in the study of heterochromatin mediated gene repression.

Preparation Note

Soluble in DMSO. At 1 mg/ml the solution is stable for 1 week at 2-8 °C.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302

Precautionary Statements

P264 - P270 - P301 + P312 - P501

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Sophie Bouchat et al.
AIDS (London, England), 26(12), 1473-1482 (2012-05-05)
Reactivation of HIV-1 expression in persistent reservoirs together with an efficient HAART has been proposed as an adjuvant therapy aimed at reaching a functional cure for HIV. Previously, H3K9 methylation was shown to play a major role in chromatin-mediated repression
Jennifer D Tibodeau et al.
Antioxidants & redox signaling, 11(5), 1097-1106 (2008-11-13)
We recently reported that the antineoplastic thiodioxopiperazine natural product chaetocin potently induces cellular oxidative stress, thus selectively killing cancer cells. In pursuit of underlying molecular mechanisms, we now report that chaetocin is a competitive and selective substrate for the oxidative
The epipolythiodioxopiperazine (ETP) class of fungal toxins: distribution, mode of action, functions and biosynthesis
Gardiner D M, et al.
Microbiology, 151(4), 1021-1032 (2005)
The molecular structure and absolute configuration of chaetocin
Weber H P
Acta Crystallographica Section B, Structural Crystallography and Crystal Chemistry, 28(10), 2945-2951 (1972)
Heterochromatin protects retinal pigment epithelium cells from oxidative damage by silencing p53 target genes
Gong L, et al.
Proceedings of the National Academy of Sciences of the USA, 115(17), E3987-E3995 (2018)
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