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41.
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Labutti K Pukall R Steenblock K Glavina Del Rio T Tice H Copeland A Cheng JF Lucas S Chen F Nolan M Bruce D Goodwin L Pitluck S Ivanova N Mavromatis K Ovchinnikova G Pati A Chen A Palaniappan K Land M Hauser L Chang YJ Jeffries CD Chain P Saunders E Brettin T Detter JC Han C Göker M Bristow J Eisen JA Markowitz V Hugenholtz P Kyrpides NC Klenk HP Lapidus A 《Standards in genomic sciences》2009,1(2):159-165
Anaerococcus prevotii (Foubert and Douglas 1948) Ezaki et al. 2001 is the type species of the genus, and is of phylogenetic interest because of its arguable assignment to the provisionally arranged family 'Peptostreptococcaceae'. A. prevotii is an obligate anaerobic coccus, usually arranged in clumps or tetrads. The strain, whose genome is described here, was originally isolated from human plasma; other strains of the species were also isolated from clinical specimen. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of a member of the genus. Next to Finegoldia magna, A. prevotii is only the second species from the family 'Peptostreptococcaceae' for which a complete genome sequence is described. The 1,998,633 bp long genome (chromosome and one plasmid) with its 1852 protein-coding and 61 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project. 相似文献
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Sikorski J Lapidus A Copeland A Glavina Del Rio T Nolan M Lucas S Chen F Tice H Cheng JF Saunders E Bruce D Goodwin L Pitluck S Ovchinnikova G Pati A Ivanova N Mavromatis K Chen A Palaniappan K Chain P Land M Hauser L Chang YJ Jeffries CD Brettin T Detter JC Han C Rohde M Lang E Spring S Göker M Bristow J Eisen JA Markowitz V Hugenholtz P Kyrpides NC Klenk HP 《Standards in genomic sciences》2010,2(2):149-157
Sulfurospirillum deleyianum Schumacher et al. 1993 is the type species of the genus Sulfurospirillum. S. deleyianum is a model organism for studying sulfur reduction and dissimilatory nitrate reduction as an energy source for growth. Also, it is a prominent model organism for studying the structural and functional characteristics of cytochrome c nitrite reductase. Here, we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of the genus Sulfurospirillum. The 2,306,351 bp long genome with its 2,291 protein-coding and 52 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. 相似文献
45.
U. N. Rotskaya L. P. Ovchinnikova E. A. Vasunina O. I. Sinitsina N. V. Kandalintseva E. A. Prosenko G. A. Nevinsky 《Biochemistry (Moscow) Supplemental Series B: Biomedical Chemistry》2010,4(4):377-382
The effects of five new derivatives of 2,6-dialkyl-4-propylphenol containing different ionogenic groups (-SO3Na, -S-SO3Na, -S-(NH2)2Cl) in the para position on survival of the E. coli AB1157 strain and its isogenic strain deficient in repair enzyme genes have been investigated in the presence and in the
absence of hydrogen peroxide. Survival of cells treated with hydrogen peroxide was markedly increased in the presence of sodium
(3-(3,5-dimethyl-4-hydroxyphenyl)propyl)-1-sulphonate (C1). Replacement of methyl substituents at ortho-position of C1 for tert-butyl or cyclohexyl groups decreased cell protection against exogenous hydrogen peroxide. Among 2,6-di-tert-buthylphenol the compound with the thiosulphonate group demonstrated properties similar to its sulphonate analog, whereas
3 mM isothiuronium chloride completely suppressed cell growth both in the absence and in the presence of hydrogen peroxide.
Thus, among the tested compounds C1 may be considered as the most promising antioxidant. 相似文献
46.
Klippel B Lochner A Bruce DC Davenport KW Detter C Goodwin LA Han J Han S Hauser L Land ML Nolan M Ovchinnikova G Pennacchio L Pitluck S Tapia R Woyke T Wiebusch S Basner A Abe F Horikoshi K Keller M Antranikian G 《Journal of bacteriology》2011,193(17):4545-4546
Two members of the family Flavobacteriaceae were isolated from subseafloor sediments using artificial seawater with cellulose, xylan, and chitin as the sole carbon and energy sources. Here, we present the complete genome sequences of Krokinobacter sp. strain 4H-3-7-5 and Lacinutrix sp. strain 5H-3-7-4, which both encode putatively novel enzymes involved in cellulose, hemicellulose, and chitin metabolism. 相似文献
47.
V. A. Spiridonova P. A. Levashov E. D. Ovchinnikova O. I. Afanasieva K. A. Glinkina I. Yu. Adamova S. N. Pokrovsky 《Russian Journal of Bioorganic Chemistry》2014,40(2):151-154
DNA aptamer-based sorbents were synthesized for binding human IgE. Sorbents effectively removed IgE from human blood plasma. The experimental values of IgE desorption constants were within the range of 1.1 × 10?10 to 1.7 × 10?10 M depending on the orientation of the aptamer on an insoluble matrix. The sorbents were stable during multiple use. Conditions for sorbent regeneration were selected. These chromatographic materials can be used for medical and biotechnological applications. 相似文献
48.
V V Kukhtina K Weise A V Osipov V G Starkov M I Titov S E Esipov T V Ovchinnikova V I Tsetlin Iu N Utkin 《Bioorganicheskaia khimiia》2000,26(11):803-807
By MALDI MS, we searched cobra venoms for new low-content polypeptides. A number of new proteins with molecular masses 7-25 kDa, characteristic of the known snake protein toxins, were identified, with the content of one of them less than 0.02%. 相似文献
49.
Bioengineering and functional characterization of arenicin shortened analogs with enhanced antibacterial activity and cell selectivity
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Pavel V. Panteleev Ilia A. Bolosov Tatiana V. Ovchinnikova 《Journal of peptide science》2016,22(2):82-91
New bioengineering approaches are required for development of more active and less toxic antimicrobial peptides. In this study we used β‐hairpin antimicrobial peptide arenicin‐1 as a template for design of more potent antimicrobials. In particular, six shortened 17‐residue analogs were obtained by recombinant expression in Escherichia coli. Besides, we have introduced the second disulfide bridge by analogy with the structure of tachyplesins. As a result, a number of analogs with enhanced activity and cell selectivity were developed. In comparison with arenicin‐1, which acts on cell membranes with low selectivity, the most potent and promising its analog termed ALP1 possessed two‐fold higher antibacterial activity and did not affect viability of mammalian cells at concentration up to 50 μM. The therapeutic index of ALP1 against both Gram‐positive and Gram‐negative bacteria was significantly increased compared with that of arenicin‐1 while the mechanism of action remained the same. Like arenicin‐1, the analog rapidly disrupt membranes of both stationary and exponential phase bacterial cells and effectively kills multidrug‐resistant Gram‐negative bacteria. Furthermore, ALP1 was shown to bind DNA in vitro at a ratio of 1:1 (w/w). The circular dichroism spectra demonstrated that secondary structures of the shortened analogs were similar to that of arenicin‐1 in water solution, but significantly differed in membrane‐mimicking environments. This work shows that a strand length is one of the key parameters affecting cell selectivity of β‐hairpin antimicrobial peptides. Copyright © 2015 European Peptide Society and John Wiley & Sons, Ltd. 相似文献
50.
M K Saparbaev A V Mazin L P Ovchinnikova G L Dianov R I Salganik 《Molekuliarnaia genetika, mikrobiologiia i virusologiia》1988,(2):12-16
A new method for obtaining the recombinant DNA based on heteroduplex-initiated site-directed insertion of alien nucleotide sequences is proposed. To generate a single-stranded region, plasmid DNA was nicked with restriction endonuclease in the presence of ethidium bromide with subsequent exonuclease III controlled digestion. The inserted DNA sequences flanked by nucleotide sequences complementary to single-stranded region were annealed with plasmid DNA and E. coli cells were transformed by the resulting heteroduplex molecules. The presented data show the possibility to insert as many as 200 nucleotides. The yield of recombinant DNA varied from 16 to 0.7% as the number of nucleotides inserted correspondingly varied from 15 to 200. The site of insertion does not depend crucially on the localization of the restriction site used. 相似文献