Amicetin C
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| Category | Antibiotics |
| Catalog number | BBF-00435 |
| CAS | 102646-94-6 |
| Molecular Weight | 1243.48 |
| Molecular Formula | C56H94N10O19S |
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Description
It is produced by the strain of Streptomuces vinaceusdrappus. The antibacterial activity was lower than that of Amicetin.
Properties
| Appearance | Light Yellow Crystal (free alkali) |
| Antibiotic Activity Spectrum | Gram-positive bacteria; mycobacteria |
| Melting Point | 160-163 °C (free alkali) |
| Solubility | Soluble in Water, Hydrochloric acid, Sodium hydroxide, Methanol, Butanol; Poorly soluble in Ethanol, Hexane |
Reference Reading
1. NMR characterisation of a highly conserved secondary structural RNA motif of Halobacterium halobium 23S rRNA
John King, Christos Shammas, Misbah Nareen, Moreno Lelli, Vasudevan Ramesh Org Biomol Chem. 2013 May 28;11(20):3382-92. doi: 10.1039/c3ob40295a.
The highly conserved 29-mer RNA motif corresponding to the peptidyl transferase central circle region of the domain V of Halobacterium halobium 23S rRNA has been characterised by multidimensional NMR spectroscopy. The NMR structure has a good all atom average RMSD of 1.28 Å and a stable A-form helical conformation. The NMR structure differs from the X-ray crystal structure of an analogous motif, contained within the Escherichia coli ribosome, as none of the bases are flipped out and a number of non-canonical base pairs are formed in the solution structure. Thus in the observed NMR structure, the predicted A7 to U30 base pair is not seen and a non-canonical U6 to U30 base pair was formed in its place. Similarly the predicted A9 to U26 base pair was also not observed and another non-canonical A9 to A27 base pair was formed. It was also seen from the conformational analysis that the steps near the bulges had the greatest deviation from the canonical Watson-Crick base pair step parameters. Despite these differences, the 29-mer structure provides a working model of the RNA within the ribosome in a more natural solution state than that observed in the intact ribosome crystal structures, particularly around the A27 residue. The NMR structure determination of the 29-mer RNA motif provides a solid foundation for determining the NMR structure of the RNA-amicetin complex in the next step. To extend the above study, a fully (13)C and (15)N isotopically labelled 37-mer RNA version of the Halobacterium halobium RNA sample has been characterised using ultra high field 1 GHz spectroscopy. The results have been used to demonstrate the advantages conferred by the use of a 1 GHz spectrometer frequency over 800 MHz in terms of superior sensitivity and greater spectral dispersion achieved in the spectrum of the RNA.
2. Anti-mycobacterial nucleoside antibiotics from a marine-derived Streptomyces sp. TPU1236A
Ying-Yue Bu, Hiroyuki Yamazaki, Kazuyo Ukai, Michio Namikoshi Mar Drugs. 2014 Dec 17;12(12):6102-12. doi: 10.3390/md12126102.
Five new nucleoside antibiotics, named streptcytosines A-E (1-5), and six known compounds, de-amosaminyl-cytosamine (6), plicacetin (7), bamicetin (8), amicetin (9), collismycin B (10), and SF2738 C (11), were isolated from a culture broth of Streptomyces sp. TPU1236A collected in Okinawa, Japan. The structures of new compounds were elucidated on the basis of their spectroscopic data (HRFABMS, IR, UV, and 2D NMR experiments including 1H-1H COSY, HMQC, HMBC, and NOESY spectra). Streptcytosine A (1) belonged to the amicetin group antibiotics, and streptcytosines B-E (2-5) were derivatives of de-amosaminyl-cytosamine (6), 2,3,6-trideoxyglucopyranosyl cytosine. Compound 1 inhibited the growth of Mycobacterium smegmatis (MIC = 32 µg/mL), while compounds 2-5 were not active at 50 µg/disc. Bamicetin (8) and amicetin (9) showed the MICs of 16 and 8 µg/mL, respectively.
3. Cytosine-type nucleosides from marine-derived Streptomyces rochei 06CM016
Semiha Çetinel Aksoy, Ataç Uzel, Erdal Bedir J Antibiot (Tokyo). 2016 Jan;69(1):51-6. doi: 10.1038/ja.2015.72. Epub 2015 Jul 1.
Rocheicoside A (3), a nucleoside analog possessing a novel 5-(hydroxymethyl)-5-methylimidazolidin-4-one substructure, was isolated from marine-derived actinomycete Streptomyces rochei 06CM016, together with a new (4) and three known compounds. Structures of the new metabolites were elucidated by one-dimensional ((1)H and (13)C) and 2D NMR (COSY, HMQC and HMBC) and HR-TOF-MS analyses. All the metabolites exhibited significant antimicrobial activity. A plausible mechanism was proposed for compound 3's formation from amicetin.
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Bio Calculators
* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2
* Total Molecular Weight:
g/mol
Tip: Chemical formula is case sensitive. C22H30N4O √ c22h30n40 ╳
