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Sigma-Aldrich

Polymyxin B Sulfate

Polymyxin B Sulfate, CAS 1405-20-5, is an antibiotic that is effective against Gram-positive bacteria. Inhibits phospholipid-sensitive Ca2+-dependent protein kinases.

Synonym(s):

Polymyxin B Sulfate, Aerosporin

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About This Item

CAS Number:
1405-20-5
MDL number:
MFCD00131991
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

200

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze

color

white to off-white

solubility

water: 25 mg/mL

shipped in

ambient

storage temp.

10-30°C

InChI

1S/C48H82N16O13.H2O4S/c1-27(2)24-37-47(76)59-32(11-19-52)41(70)56-31(10-18-51)43(72)61-35(14-22-65)39(68)54-21-13-34(45(74)57-33(12-20-53)44(73)64-38(48(77)63-37)25-28-6-4-3-5-7-28)60-42(71)30(9-17-50)58-46(75)36(15-23-66)62-40(69)29(8-16-49)55-26-67;1-5(2,3)4/h3-7,26-27,29-38,65-66H,8-25,49-53H2,1-2H3,(H,54,68)(H,55,67)(H,56,70)(H,57,74)(H,58,75)(H,59,76)(H,60,71)(H,61,72)(H,62,69)(H,63,77)(H,64,73);(H2,1,2,3,4)

InChI key

HNDFYNOVSOOGDU-UHFFFAOYSA-N

General description

Polymyxin B is a polypeptide antibacterial that belongs to the polymyxin family. It exerts its effects against Gram-negative bacteria such as Pseudomonas aeruginosa, Acinetobacter baumannii, Enterobacter sp., and Klebsiella sp.. Polymyxin B sulfate is a mixture of polymyxin B1 sulfate and polymyxin B2 sulfate.

Application

Polymyxin B Sulfate - CAS 1405-20-5 – Calbiochem has been used:
  • to neutralize the endotoxins in bovine serum albumin
  • in the in vitro treatment of hepatic stellate cells (HSCs)
  • as an antibiotic in collateral sensitivity and cross-resistance analysis in Escherichia coli

Biochem/physiol Actions

Polymyxin B possesses antiendotoxin activity. It binds to lipid A of the lipopolysaccharide (LPS) molecules and facilitates penetration by displacing Ca2+ and Mg2+ in the outer membrane of Gram-negative bacteria.

Warning

Toxicity: Harmful (C)

Other Notes

Lucas, M., et al. 1994. Biochem. Pharmacol. 47, 667.
Ngezahayo, A. and Kolb, H.A. 1993. Pflugers Arch.422, 413.
Kubo, M. and Okada, Y. 1992. J. Physiol.456, 351.
Strasser, S.H., et al. 1992. Circ. Res.70, 1304.
Hegemann, L., et al. 1991. Eur. J. Pharmacol.207, 17.
Inaba, H. and Filkins, J.P. 1991. Am. J. Physiol.261, R26.
Marra, M.N., et al. 1990. J. Immunol.144, 662.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

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

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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Guiqin Wu et al.
Cell chemical biology, 28(4), 524-536 (2021-01-13)
Aggregation can be selectively induced by aggregation-prone regions (APRs) contained in the target proteins. Aggregation-inducing antimicrobial peptides (Pept-ins) contain sequences homologous to APRs of target proteins and exert their bactericidal effect by causing aggregation of a large number of proteins.
Andrea Kwa et al.
Expert review of anti-infective therapy, 5(5), 811-821 (2007-10-05)
Hospital-acquired infections due to multidrug-resistant gram-negative bacteria constitute major health problems, since the medical community is continuously running out of available effective antibiotics and no new agents are in the pipeline. Polymyxins, a group of antibacterials that were discovered during
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