2. Anti-infection NF-κB Metabolic Enzyme/Protease Immunology/Inflammation
  3. Bacterial Reactive Oxygen Species (ROS)
  4. Brevicidine TFA

Brevicidine TFA is an antimicrobial peptide with selective bactericidal activity against Gram-negative pathogens. Brevicidine TFA disrupts bacterial morphology by binding to lipopolysaccharide (LPS) on the bacterial cell membrane to form pores. Brevicidine TFA causes dissipation of intracellular proton motive force, outer membrane damage, inhibition of ATP biosynthesis and reactive oxygen species accumulation in bacterial cells. As a sensitizer, Brevicidine TFA exerts synergistic activity when combined with a variety of conventional antibiotics.

For research use only. We do not sell to patients.

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Brevicidine TFA

Brevicidine TFA Chemical Structure

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Based on 1 publication(s) in Google Scholar

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Brevicidine TFA Related Antibodies

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Description

Brevicidine TFA is an antimicrobial peptide with selective bactericidal activity against Gram-negative pathogens. Brevicidine TFA disrupts bacterial morphology by binding to lipopolysaccharide (LPS) on the bacterial cell membrane to form pores. Brevicidine TFA causes dissipation of intracellular proton motive force, outer membrane damage, inhibition of ATP biosynthesis and reactive oxygen species accumulation in bacterial cells. As a sensitizer, Brevicidine TFA exerts synergistic activity when combined with a variety of conventional antibiotics[1][2].

In Vitro

Brevicidine (0-2 μM; 20 h) TFA acts as a synergistic sensitizer. When combined with outer membrane-impermeable antibiotics (Erythromycin (HY-B0220), Azithromycin (HY-17506), Vancomycin (HY-B0671)) against Acinetobacter baumannii strains, it reduces the MIC by up to 128-fold at concentrations as low as 1 μM[1].
Brevicidine (0.125-4 μM; 25 min) TFA disrupts the outer membrane of Acinetobacter baumannii ATCC 17978 in a dose-dependent manner[1].
Brevicidine (1-4 μM; 1 h) TFA inhibits ATP synthesis and induces ROS production in Acinetobacter baumannii, and this effect is enhanced when used in combination with Erythromycin[1].
Brevicidine (1-16 mg/L; 20 h) TFA selectively inhibits Gram-negative pathogenic bacteria with an MIC range of 1-16 mg/L, and shows no activity against Gram-positive pathogenic bacteria[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Brevicidine TFA Related Antibodies
In Vivo

Brevicidine (5 mg/kg; i.v.; single dose) TFA reduces mortality and decreases bacterial load in a mouse peritonitis-sepsis model induced by A. baumannii[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: BALB/c (male)[1]
Dosage: 5 mg/kg (monotherapy); 5 mg/kg (combined with 5 mg/kg Erythromycin)
Administration: i.v.; single dose
Result: Reduced the death rate of A. baumannii-infected mice from 80% to 60%; significantly reduced bacterial load in the liver and spleen.
Achieved 100% survival when combined with 5 mg/kg Erythromycin; showed greater reduction in bacterial loads across organs when combined with Erythromycin compared to monotherapy.
Molecular Weight

1519.74 (free base)

Formula

C74H106N18O17·xC2HF3O2
Appearance

Solid

Color

White to off-white

Sequence

4-Methylhexanoyl-{d-Asn}-{d-Tyr}-{d-Trp}-{d-Orn}-{Orn}-Gly-{d-Orn}-Trp-Thr-Ile-Gly-Ser (Lactone: Thr9-Ser12)
Sequence Shortening

4-Methylhexanoyl-{d-Asn}-{d-Tyr}-{d-Trp}-{d-Orn}-{Orn}-G-{d-Orn}-WTIGS (Lactone: Thr9-Ser12)
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

Sealed storage, away from moisture

Powder -80°C 2 years
-20°C 1 year

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

H2O : ≥ 50 mg/mL

*"≥" means soluble, but saturation unknown.

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This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation
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Brevicidine TFA Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

BrevicidineBacterialReactive Oxygen Species (ROS)Acinetobacter baumanniiHepG2 cellsGram-negative pathogensred blood cellscardiolipinphosphatidylglycerollipopolysaccharideEscherichia coliStaphylococcus aureusmammalian cellsInhibitorinhibitorinhibit

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