A broad-spectrum semisynthetic antibiotic related to tetracycline but excreted more slowly and maintaining effective blood levels for a more extended period.
- Mechanism
- Curator reviewed
Methacycline, a tetracycline antibiotic, is a protein synthesis inhibitors, inhibiting the binding of aminoacyl-tRNA to the mRNA-ribosome complex. Methacycline inhibits cell growth by inhibiting translation. It binds to the 16S part of the 30S ribosomal subunit and prevents the amino-acyl tRNA from binding to the A site of the ribosome. The binding is reversible in nature. Tetracyclines also have been found to inhibit matrix metalloproteinases. This mechanism does not add to their antibiotic effects, but has led to extensive research on chemically modified tetracyclines or CMTs (like incyclinide) for the treatmet of rosacea, acne, and various types of neoplasms.
- Primary indication
- For the treatment of acute bacterial exacerbations of chronic bronchitisCurator reviewed
- Formula / weight
- C22H22N2O8 · 442.424 g/mol (avg)
- Also known as
- Methacycline · Methylenecycline · Tri-methacycline
- Code names
- GS-2876
Resolves to
MHIGBKBJSQVXNH-IWVLMIASSA-NSMILES[H][C@@]12[C@@H](O)[C@]3([H])C(=C)C4=C(C(O)=CC=C4)C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)CWhat you can answer from here — as of September 23, 2026
Which companies are running trials of Metacycline, in which indications and phases, and which of those programs are still active?
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