Isolation and initial characterization of a series of Chlamydia trachomatis isolates selected for hydroxyurea resistance by a stepwise procedure.

Abstract excerpt

Chlamydiae are obligate intracellular bacteria that are dependent on eukaryotic host cells for ribonucleoside triphosphates but not deoxyribonucleotide triphosphates. Ribonucleotide reductase is the only enzyme known to catalyze the direct conversion of a ribonucleotide to a deoxyribonucleotide. Hydroxyurea inhibits ribonucleotide reductase by inactivating the tyrosine free radical present in the small subunit of...

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