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排序方式: 共有232条查询结果,搜索用时 15 毫秒
1.
EA Dukhanina TI Lukyanova EA Romanova V Guerriero NV Gnuchev GP Georgiev DV Yashin LP Sashchenko 《Cell cycle (Georgetown, Tex.)》2015,14(22):3635-3643
PGRP-S (Tag7) is an innate immunity protein involved in the antimicrobial defense systems, both in insects and in mammals. We have previously shown that Tag7 specifically interacts with several proteins, including Hsp70 and the calcium binding protein S100A4 (Mts1), providing a number of novel cellular functions. Here we show that Tag7–Mts1 complex causes chemotactic migration of lymphocytes, with NK cells being a preferred target. Cells of either innate immunity (neutrophils and monocytes) or acquired immunity (CD4+ and CD8+ lymphocytes) can produce this complex, which confirms the close connection between components of the 2 branches of immune response. 相似文献
2.
Penetration of glucose into cells of several extremely halophilic archaebacteria of the Halobacterium and Haloferax genera (Halobacterium saccharovorum and Halobacterium salinarium, Haloferax volcanii and Haloferax mediterranei) has been studied. Some characteristics of transport systems of carbohydrate-utilizing halobacteria Halobacterium saccharovorum, Haloferax mediterranei and Haloferax volcanii (pH and temperature optima, stereospecificity, kinetic parameters) have been determined. Inability of H. salinarium cells for active glucose transport has been shown. The dependence of glucose transport on the Na+ ions gradient (on the whole cells and membrane vesicles) has been demonstrated. Cells or membrane vesicles of carbohydrate-utilizing halobacteria grown in media containing this sugar indicated the activation of glucose transport, whereas cells grown in media without sugars did not. This fact has allowed us to conclude that corresponding transport systems are inducible. 相似文献
3.
Kallistova A. Yu. Kadnikov V. V. Savvichev A. S. Rusanov I. I. Dvornikov Yu. A. Leibman M. O. Khomutov A. V. Ravin N. V. Pimenov N. V. 《Microbiology》2021,90(2):261-267
Microbiology - Comparative study of methanogen diversity and potential activity of different methanogenic pathways in the sediments of young thermokarst and mature polygenetic Yamal lakes was... 相似文献
4.
5.
Samylina O. S. Rusanov I. I. Tarnovetskii I. Yu. Yakushev E. V. Grinko A. A. Zakharova E. E. Merkel A. Yu. Kanapatskiy T. A. Semiletov I. P. Pimenov N. V. 《Microbiology》2021,90(2):145-157
Microbiology - The taxonomic diversity and metabolic activity of microbial communities in the Laptev Sea water column above and outside the methane seep field were studied. The concentrations of... 相似文献
6.
Oshkin I. Yu. Danilova O. V. Suleimanov R. Z. Tikhonova E. N. Malakhova T. V. Murashova I. A. Pimenov N. V. Dedysh S. N. 《Microbiology》2021,90(5):588-597
Microbiology - The technology of single-cell protein production from natural gas is based on using thermotolerant methanotrophic bacteria with high growth rates on methane. So far, the spectrum of... 相似文献
7.
Kuznetsova A. I. Ivanova E. A. Samylina O. S. Kurbanova F. G. Gruzdev D. S. Kanapatskiy T. A. Pimenov N. V. 《Microbiology》2020,89(6):670-684
Microbiology - Analysis of the taxonomic structure of prokaryotic microbial complexes of the saline soils in the Lake Elton area and their comparative characteristics were carried out for a soil... 相似文献
8.
Tikhonova E. N. Tarnovetskii I. Yu. Malakhova T. V. Gulin M. B. Merkel A. Yu. Pimenov N. V. 《Microbiology》2020,89(6):740-749
Microbiology - Methane oxidation rates and diversity of methane-oxidizing microorganisms in the upper sediment layers of the Crimean Peninsula coastal regions (Black Sea) were investigated.... 相似文献
9.
Sulfate reduction, methanogenesis, and methane oxidation in the upper sediments of the Vistula and Curonian Lagoons, Baltic Sea 总被引:1,自引:0,他引:1
N. V. Pimenov M. O. Ul’yanova T. A. Kanapatskii I. N. Mitskevich I. I. Rusanov P. A. Sigalevich I. A. Nemirovskaya V. V. Sivkov 《Microbiology》2013,82(2):224-233
Microbiological, biogeochemical, and isotope geochemical investigations of the upper sediments of the Vistula and Curonian lagoons, Baltic Sea, were carried out. High content of organic matter in the sediments was responsible for the high numbers (over 1010 cells cm?3) and activity of heterotrophic microorganisms. The calculated integral rates of dark CO2 assimilation for the upper 30 cm of the sediments varied 12.5 to 38.8 mmol m?2 day?1 and were somewhat higher in the Curonian Lagoon than in the Vistula Lagoon. Integral rates of sulfate reduction were higher in the more saline Vistula Lagoon. Rapid consumption of sulfates of the pore water resulted in intensified methanogenesis, with significantly higher rates detected in the silts of the Curonian Lagoon. High rates of methanogenesis in the Curonian Lagoon correlated with higher methane levels in its upper sediments and near-bottom water. The highest rates of methane oxidation were detected in the uppermost sediment horizons (oxidized or slightly reduced), which was an indication of the barrier role of aerobic methanotrophic bacteria. The calculated methane flows from the sediments into the water column were 0.45 and 0.007 mmol m?2 day?1 for the Vistula and Curonian Lagoons, respectively. Low methane flow from the sediments of the Curonian Lagoon resulted probably from the specific weather (wind) conditions during sampling. The near-stormy conditions in the Curonian Lagoon caused sediment detachment, resulting in methane release into the water column. 相似文献
10.
N. V. Pimenov V. N. Egorov T. A. Kanapatskii T. V. Malakhova Yu. G. Artemov P. A. Sigalevich L. V. Malakhova 《Microbiology》2013,82(5):618-627
The rates of microbial processes of sulfate reduction and of the methane cycle were measured in the bottom sediments of the Sevastopol basin, where seeps of gaseous methane have been previously found. Typically for marine environments, sulfate reduction played the major role in the terminal phase of decomposition of organic matter (OM) in reduced sediments of this area. The rate of this process depended on the amount of available OM. The rate of methanogenesis in the sediments increased with depth, peaking in the subsurface horizons, where decreased sulfate concentration was detected in the pore water. The highest rates of sulfate-dependent anaerobic methane oxidation were found close to the methane-sulfate transition zone as is typical of most investigated marine sediments. The data on the carbon isotopic composition of gaseous methane from the seeps and dissolved CH4 from the bottom sediments, as well as on the rates of microbial methanogenesis and methane oxidation indicate that the activity of the methane seeps results from accumulation of biogenic methane in the cavities of the underlying geological structures with subsequent periodic release of methane bubbles into the water column. 相似文献