Penicillin G, sodium salt

Description

Penicillin is the first antibiotic isolated from the mold Penicillium noctum, specifically it is known as penicillin G (other name: benzylpenicillin) and belongs to a class of similar antibiotics called penicillins. Nowadays penicillin G is produced by Penicillium chrysogenum fermentation. Penicillin G has activity against Gram-positive bacteria, but less activity against Gram-negative bacteria. It acts as a competitive inhibitor of the enzyme transpeptidase, which is needed by bacteria to make their cell walls. Meanwhile, β-lactamases (also called penicillinases) are enzymes produced by bacteria that deactivate penicillin G by destroying the β-lactam ring via hydrolysis. In rare cases, an allergy to penicillin G can cause an anaphylactic reaction, which can be deadly. Currently, the enzymatic hydrolysis of penicillin G gives 6-aminopenicillanic acid (6-APA) , which is a basic raw material for the industrial production of semisynthetic β-lactamase-resistant penicillins such as amoxycillin and ampicillin.

Specification

Application

Penicillin G is a narrow spectrum natural antibiotic. It is effective against Streptococcus pneumoniae, groups A, B, C and G streptococci, nonenterococcal group D streptococci, viridans group streptococci, and non-penicillinase producing staphylococcus. It has been used to study the diagnostic and therapeutic implications of gentamicin-resistant Enterococcus faecalis sequence type 6 with reduced penicillin susceptibility and in cell culture both alone and combined with streptomycin and other antibiotics.

Biochem/physiol Actions

Mode of Action: Penicillin G acts by inhibiting cell wall synthesis through binding to penicillin binding proteins (PBPs), inhibiting peptidoglycan chain cross-linking.

Antimicrobial spectrum: This product is active against gram-positive and gram-negative bacteria.

Note

Solutions should be filter sterilized and stored at 2-8°C for 1 week or at -20°C for more lengthy periods. Solutions are stable at 37°C for 3 days. The sodium salt is soluble in H2O at 100 mg/mL.

Documents

COA

SDS

Disclaimer: For laboratory research use only.