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V0627

Sigma-Aldrich

Valinomycin

≥98% (TLC), ≥90% (HPLC)

Synonym(s):
Cyclo(L-Val-D-HyIva-D-Val-L-Lac-)3: HyIva = α-Hydroxyisovaleric acid, Lac = Lactic acid
Empirical Formula (Hill Notation):
C54H90N6O18
CAS Number:
Molecular Weight:
1111.32
Beilstein:
78657
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.77

Quality Level

assay

≥90% (HPLC)
≥98% (TLC)

form

powder

storage condition

(Keep container tightly closed in a dry and well-ventilated place.)

color

white

solubility

DMSO: ≥50 mg/mL
H2O: insoluble

antibiotic activity spectrum

Gram-positive bacteria
parasites
viruses

Mode of action

cell membrane | interferes

storage temp.

2-8°C

SMILES string

CC(C)[C@@H]1NC(=O)[C@H](C)OC(=O)[C@@H](NC(=O)[C@H](OC(=O)[C@@H](NC(=O)[C@H](C)OC(=O)[C@H](NC(=O)[C@H](OC(=O)[C@@H](NC(=O)[C@H](C)OC(=O)[C@H](NC(=O)[C@H](OC1=O)C(C)C)C(C)C)C(C)C)C(C)C)C(C)C)C(C)C)C(C)C)C(C)C

InChI

1S/C54H90N6O18/c1-22(2)34-49(67)73-31(19)43(61)55-38(26(9)10)53(71)77-41(29(15)16)47(65)59-36(24(5)6)51(69)75-33(21)45(63)57-39(27(11)12)54(72)78-42(30(17)18)48(66)60-35(23(3)4)50(68)74-32(20)44(62)56-37(25(7)8)52(70)76-40(28(13)14)46(64)58-34/h22-42H,1-21H3,(H,55,61)(H,56,62)(H,57,63)(H,58,64)(H,59,65)(H,60,66)/t31-,32-,33-,34-,35+,36+,37-,38-,39-,40+,41+,42+/m0/s1

InChI key

FCFNRCROJUBPLU-RPUZOQEISA-N

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General description

Chemical structure: peptide
Valinomycin is a cyclic peptide, which contains d-valine, d-α-hydroxyvaleric acid, l-valine, and l-lactic acid in the sequential order of cyclo-[(l-Val-d-Hyv-d-Val-l-Lac)3].

Application

Valinomycin has been used:
  • to equilibrate intracellular pH and extracellular pH of 5 (and 6-)-carboxyfluorescein succinimidyl ester (cFSE) in Escherichia coli strain B23
  • as an ionophore to equilibrate intracellular pH and extracellular pH of lactic acid bacteria (LAB) strains
  • to establish the desired pH for acid-base transition and formation of K+-valinomycin diffusion potential

Biochem/physiol Actions

K+-selective ionophoric cyclodepsipeptide; potassium ionophore which uncouples oxidative phosphorylation, induces apoptosis in murine thymocytes, inhibits NGF-induced neuronal differentiation and antagonizes ET-induced vasoconstriction.
Valinomycin selectively transfers alkali metal ions via biological and synthetic membranes. The formation of a metal ion-peptide complex contributes to this ion-transporting. Valinomycin can create stable complexes with potassium, rubidium, and cesium (K+, Rb+, and Cs+) .

Packaging

10MG,25MG,100MG,500MG

Other Notes

Keep container tightly closed in a dry and well-ventilated place.

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 1 Oral

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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