[Secondary structure of SsoII-like (cytosine-5)-DNA methyltransferases N-terminal region determined by circular dichroism spectroscopy].

(Cytosine-5)-DNA methyltransferase SsoII (M.SsoII) has a long N-terminal region (1-71 residues) preceding the sequence with conservative motifs, which are characteristic for all DNA methyltransferases of such kind. The presence of this region provides M.

[Effector proteins of Clamidia].

The review summarizes the recent published data on molecular mechanisms of Chlamidiae - host cell interaction, first of all on chlamydial effector proteins. Such proteins as well as III transport system proteins that transfer many effector proteins into host cytoplasm are attractive targets for drug therapy of chlamydial infections. The majority of the data concerns two species, Chlamydia trachomatis and Chlamydophila pneumoniae.

[Conserved structural features of ETS domain--DNA complexes].

ETS proteins comprise a family of widespread transcription factors regulating expression of many animal genes. Structurally ETS proteins are characterized by conserved DNA-binding ETS domain, recognizing DNA sequences with trinucleotide GGA. Comparative analysis of structural features of ETS domain-DNA complexes was carried out and conserved contacts, important in terms of interaction stability and specificity were identified.

[Target-directed search of anti-virulence drugs].

Modern medicine now encounters with problem of the absence of effective antibacterial drugs, which are able to render therapeutic effect on chronic form of infectious process. Thus, the actual objective is to develop essentially new generation of drugs, on the basis of which should lie identification of new bacterial targets playing key role in process of chronization of infection as well as selection of new physiologically active substances, which are able to render highly specific inhibitory effect on selected target. Solving of this objective is possible during realization of new approaches for search and design of new drugs and, first of all, during usage of bioinformatics methods, which enable to identify new biotargets, select most effective chemical compounds-inhibitors and optimize their pharmacological and pharmacokinetic properties.

[Theoretical approaches for evaluation of DNA-protein interactions].

The notion of the DNA-recognizing segment of a protein for three-dimensional structures of DNA-protein complexes was formalized. Algorithms for calculating two parameters, hydrogen bonds and hydrophobic contacts, that characterize the interaction of the DNA-recognizing segment of the protein with the groove DNA major were proposed. DNA-recognizing protein segments in three-dimensional structures (of complexes) were classified according to these two parameters.

[Structural aspects of homeodomain interactions with DNA].

This review is devoted to the structural aspects of interaction of homeodomains with DNA. Presented are the list of all homeodomains with known spatial structure and the alignment of their amino acid sequences. The structure of homeodomains and contacts of their amino acid residues with DNA bases and sugar-phosphate backbone are described.

[Possibility of predicting intrauterine fetal growth retardation by a single ultrasonic examination (using varying standards)].

The paper deals with early prediction of fetal growth retardation and its severity in a newborn from single ultrasound fetal biometric findings (biparietal head size, chest and belly diameters) at week 20 of pregnancy. The prediction was made by employing the developed varying standards for these parameters as percentile curves and tables. A stepwise prediction of fetal growth retardation was proposed for obstetric in- and outpatient settings, which was presented as an IBM personal computer dialogue program.

[Chronic placental insufficiency: incidence and causes].

This population study has examined the incidence and determinants of placental insufficiency. Predictors of placental dysfunction were ascertained. They included somatic diseases, gestational complications, a positive obstetric and gynecologic history and a series of constitutional factors.

[Prognosis of recurrence of peptic ulcer after isolated selective proximal vagotomy].

The joint work of doctors and mathematicians is based upon their 20-years experience with performing vagotomy in the clinic. Prognosis of recurrence of ulcer disease was elaborated on materials of 141 operations of isolated selective proximal vagotomy for chronic duodenal ulcer. The dispensary principle of managing the patients after operation allowed obtaining objective data both in the nearest and remote (over 10 years) periods.