Publications by authors named "T I Koval'"

In mycobacteria, σ is the primary sigma factor. This essential protein binds to RNA polymerase (RNAP) and mediates transcription initiation of housekeeping genes. Our knowledge about this factor in mycobacteria is limited.

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Mycobacterial HelD is a transcription factor that recycles stalled RNAP by dissociating it from nucleic acids and, if present, from the antibiotic rifampicin. The rescued RNAP, however, must disengage from HelD to participate in subsequent rounds of transcription. The mechanism of release is unknown.

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Nucleases of the S1/P1 family have important applications in biotechnology and molecular biology. We have performed structural analyses of SmNuc1 nuclease from Stenotrophomonas maltophilia, including RNA cleavage product binding and mutagenesis in a newly discovered flexible Arg74-motif, involved in substrate binding and product release and likely contributing to the high catalytic rate. The Arg74Gln mutation shifts substrate preference towards RNA.

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Purpose: Complementary health approaches (CHAs) equip patients to self-manage radiation therapy (RT)-related symptoms and fulfill unmet needs, but few disclose CHA use to their radiation oncologist. An integrative medicine educational program (IMEP) was developed to assess its ability to improve patient self-efficacy for symptom management and CHA use disclosure.

Methods And Materials: The IMEP included 4 1-hour sessions covering topics of (1) meditation, (2) yoga, (3) massage therapy, and (4) nutrition.

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Objective: The aim: To analyze the incidence of Hepatitis A in Ukraine and Poltava region and to study the clinical and epidemiological features of the course of Hepatitis A in adult patients.

Patients And Methods: Materials and methods: The course of HA in 96 hospitalized patients was analyzed. The diagnosis of HA was established on the basis of clinical and epide¬miological data and confirmed by the results of laboratory studies (serological and molecular biological).

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