Plantazolicin

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Plantazolicin


Plantazolicin is a ribosomally synthesized and post-translationally modified peptide (RiPP) antibiotic produced by the soil bacterium Bacillus amyloliquefaciens FZB42. It is a member of the thiazole/oxazole-modified microcin (TOMM) family of natural products.

Structure and Biosynthesis

The structure of plantazolicin is characterized by a series of thiazole and (methyl)oxazole heterocycles, which are derived from cysteine, serine, and threonine residues via a post-translational modification (PTM) pathway. The biosynthesis of plantazolicin involves a precursor peptide, PznA, and several modification enzymes, including PznB, PznC, PznD, PznE, and PznF.

Mode of Action

Plantazolicin selectively inhibits the growth of Bacillus anthracis, the causative agent of anthrax. It achieves this by binding to the ribosome and blocking protein synthesis. The exact binding site and mechanism of action of plantazolicin are still under investigation.

Potential Applications

Due to its selective activity against Bacillus anthracis, plantazolicin has potential applications in the treatment of anthrax. However, further research is needed to fully understand its mechanism of action and to assess its safety and efficacy in clinical settings.

See Also

References


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Types of antibacterials
Antibacterials that inhibit protein synthesis (J01A, J01B, J01F, J01G, QJ01XQ)
30S
50S
Oxazolidinone (initiation inhibitors)
Peptidyl transferase
MLS (transpeptidation/translocation)
Antibacterials active on the cell wall and envelope (J01C-J01D)
β-lactams
(inhibit synthesis
of peptidoglycan
layer of bacterial
cell wall by binding
to and inhibiting
PBPs, a group of
D-alanyl-D-alanine
transpeptidases)
Penicillins (Penams)
Narrow
spectrum
Extended
spectrum
Carbapenems / Penems
Cephems
Cephalosporins
Cephamycins
Carbacephems
1st generation
2nd generation
3rd generation
4th generation
5th generation
Monobactams
β-lactamase inhibitors
Polypeptides
Lipopeptides
- Insert into bacterial cell wall causing perforation and depolarization: Daptomycin - Surfactin
Other
- Inhibits PG elongation and crosslinking: Ramoplanin§
Intracellular
- Inhibit PG subunit synthesis and transport: NAM synthesis inhibition (Fosfomycin)

- DADAL/AR inhibitors (Cycloserine)

- bactoprenol inhibitors (Bacitracin)
Other
- Hydrolyze NAM-NAG

- - lysozyme - Tyrothricin - - Gramicidin - - Tyrocidine - Isoniazid#

- Teixobactin


Antibacterials that inhibit nucleic acid (J01E, J01M)
Antifolates
(inhibit bacterial
purine metabolism,
inhibiting DNA/RNA synthesis)

DHFR inhibitors - 2,4-Diaminopyrimidine (Brodimoprim - Iclaprim - Ormetoprim - Pyrimethamine - Tetroxoprim - Trimethoprim)
Sulfonamides (DHPS inhibitors)
Short-acting - Sulfisomidine - Sulfamethizole - Sulfadimidine (Sulfamethazine - Sulfadimerazine - Sulfadimezine) - Sulfapyridine (Sulfasalazine) - Sulfafurazole (Acetyl sulfisoxazole) - Sulfanilamide (Prontosil) - Sulfathiazole (Phthalylsulfathiazole - Succinylsulfathiazole) - Sulfathiourea

Intermediate-acting - Sulfamethoxazole - Sulfadiazine - Sulfamoxole

Long-acting - Sulfadimethoxine - Sulfadoxine - Sulfalene - Sulfametomidine - Sulfametoxydiazine - Sulfamethoxypyridazine - Sulfaperin - Sulfamerazine - Sulfaphenazole - Sulfamazone

Other/ungrouped - Mafenide - Sulfacetamide - Sulfaclozine - Sulfadicramide - Sulfaguanidine - Sulfametrole - Sulfanitran

Combinations - Trimethoprim/sulfamethoxazole - Ormetoprim/sulfadimethoxine - Pyrimethamine/dapsone - Pyrimethamine/sulfadoxine

Other DHPS inhibitors - Acediasulfone - Dapsone - Solasulfone - Sulfoxone

Quinolones
(inhibit topoisomerase/DNA gyrase)

1st Generation - Cinoxacin - Flumequine - Nalidixic acid - Oxolinic acid - Pipemidic acid - Piromidic acid - Rosoxacin

Fluoroquinolones
2nd Gen - Ciprofloxacin - Ofloxacin - Enoxacin - Fleroxacin - Lomefloxacin - Nadifloxacin - Levonadifloxacin - Alalevonadifloxacin - Norfloxacin - Pefloxacin - Rufloxacin

3rd Gen - Levofloxacin - Balofloxacin - Grepafloxacin - Pazufloxacin - Sparfloxacin - Temafloxacin - Tosufloxacin

4th Gen - Besifloxacin - Delafloxacin - Gatifloxacin - Finafloxacin - Gemifloxacin - Moxifloxacin - Clinafloxacin - Garenoxacin - Prulifloxacin - Sitafloxacin - Trovafloxacin - Alatrofloxacin

Veterinary use - Danofloxacin - Difloxacin - Enrofloxacin - Ibafloxacin - Marbofloxacin - Orbifloxacin - Pradofloxacin - Sarafloxacin

Newer non-fluorinated - Nemonoxacin - Ozenoxacin Related (DNA gyrase) - Aminocoumarins (Novobiocin)

Anaerobic DNA inhibitors

Nitroimidazole derivatives - Secnidazole

RNA synthesis inhibitors

Rifamycins - Rifampicin - Rifabutin - Rifapentine - Rifaximin - Rifalazil
Lipiarmycins - Fidaxomicin


Antibacterials: others (J01X, D06AX)
Other/ungrouped



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Contributors: Prab R. Tumpati, MD