Recombinant Streptomyces actuosus Nosiheptide precursor (nosM)

Inhibits bacterial protein biosynthesis by binding to ribosomes. Specifically, binds to the complex of 23S rRNA and ribosomal protein L11 (RPLK) in the 50S ribosomal subunit. While allowing a weak binding of elongation factor G (EF-G) to the ribosome and subsequent GTP-hydrolysis, probably impairs conformational changes in both the ribosome and EF-G which are necessary for translocation. In vitro, inhibits Gram-positive bacteria S.aureus strain 209P (MIC=0.0009 µg/ml), S.aureus strain 133 (MIC=0.0019 µg/ml), S.aureus strain B3 (MIC=0.003 µg/ml), S.aureus strain Hb (MIC=0.003 µg/ml), M.citreus strain ATCC 8411 (MIC=0.0038 µg/ml), M.lysodeikticus strain ATCC 4698 (MIC=0.003 µg/ml), S.lutea strain ATCC 9341 (MIC=0.0011 µg/ml), S.faecalis strain ATCC 9790 (MIC=0.0007 µg/ml), S.viridans (MIC=0.0065 µg/ml), S.pyogenes hemolyticus strain Dig7 (MIC=0.00028 µg/ml), D.pneumoniae strain Til (MIC=0.00015 µg/ml), N.catrrhalis (MIC=0.0017 µg/ml), L.casei strain ATCC 6633 (MIC=0.003 µg/ml), B.cereus strain ATCC 6630 (MIC=0.0071 µg/ml) and various isolates of L.monocytogenes. In vitro, inhibits Gram-negative bacterium P.multocida strain A125 (MIC=0.0024 µg/ml) but not M.smegmatis strain ATCC 6630, S.typhimurium, A.aerogenes strain ATCC 8308, P.vulgaris, K.pneumoniae strain ATCC 10031, S.marcescens strain A476, P.aeruginosa strain Bass or B.bronchiseptica strain CN387. Does not inhibit Gram-negative bacterium E.coli strain ATCC 9637 but does inhibit purified ribosomes from E.coli. In vivo, has no systemic effect in mice infected with staphylococci or streptococci when applied orally or subcutaneously. Has a local effect in mice infected subcutaneously or intraperitoneally with staphylococci when applied immediately afterwards. Is not toxic to mice.

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Inhibits bacterial protein biosynthesis by binding to ribosomes. Specifically, binds to the complex of 23S rRNA and ribosomal protein L11 (RPLK) in the 50S ribosomal subunit. While allowing a weak binding of elongation factor G (EF-G) to the ribosome and subsequent GTP-hydrolysis, probably impairs conformational changes in both the ribosome and EF-G which are necessary for translocation. In vitro, inhibits Gram-positive bacteria S.aureus strain 209P (MIC=0.0009 ug/ml), S.aureus strain 133 (MIC=0.0019 ug/ml), S.aureus strain B3 (MIC=0.003 ug/ml), S.aureus strain Hb (MIC=0.003 ug/ml), M.citreus strain ATCC 8411 (MIC=0.0038 ug/ml), M.lysodeikticus strain ATCC 4698 (MIC=0.003 ug/ml), S.lutea strain ATCC 9341 (MIC=0.0011 ug/ml), S.faecalis strain ATCC 9790 (MIC=0.0007 ug/ml), S.viridans (MIC=0.0065 ug/ml), S.pyogenes hemolyticus strain Dig7 (MIC=0.00028 ug/ml), D.pneumoniae strain Til (MIC=0.00015 ug/ml), N.catrrhalis (MIC=0.0017 ug/ml), L.casei strain ATCC 6633 (MIC=0.003 ug/ml), B.cereus strain ATCC 6630 (MIC=0.0071 ug/ml) and various isolates of L.monocytogenes. In vitro, inhibits Gram-negative bacterium P.multocida strain A125 (MIC=0.0024 ug/ml) but not M.smegmatis strain ATCC 6630, S.typhimurium, A.aerogenes strain ATCC 8308, P.vulgaris, K.pneumoniae strain ATCC 10031, S.marcescens strain A476, P.aeruginosa strain Bass or B.bronchiseptica strain CN387. Does not inhibit Gram-negative bacterium E.coli strain ATCC 9637 but does inhibit purified ribosomes from E.coli. In vivo, has no systemic effect in mice infected with staphylococci or streptococci when applied orally or subcutaneously. Has a local effect in mice infected subcutaneously or intraperitoneally with staphylococci when applied immediately afterwards. Is not toxic to mice.

"Mapping the binding site of thiopeptide antibiotics by proximity-induced covalent capture."Baumann S., Schoof S., Harkal S.D., Arndt H.D. J. Am. Chem. Soc. 130:5664-5666 (2008)

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.