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Melanosomas of eye pigment epithelium tissue of vertebrates, synthetic DOPA-melanin and ommochromas from eye of invertebrates bind effectively bivalent iron ions. Constants of the binding process are calculated. Endogenic iron concentration in melanosomas of the frog eye pigment epithelium is determined. A conclusion is drawn that mechanism of antioxidation action of shielding eye pigments may include Fe2+ ion binding into inactive components. 相似文献
14.
A. I. Agatova N. M. Lapina L. N. Propp N. I. Torgunova 《Russian Journal of Marine Biology》2000,26(2):109-117
In this paper, data are presented on the distribution of dissolved and particulate carbohydrates, proteins, lipids, and nucleic
acids (NAs) in the waters of the Kuril Islands on both the Sea of Okhotsk and Pacific Ocean sides. By analyzing discrepancies
in the absolute and relative concentrations of these substances, it is revealed that the waters of the Sea of Okhotsk have
a strong bioproductivity. Changes in the absolute and relative conventrations of the major biochemical components of dissolved
organic matter (DOM) and particulate organic matter (POM) are shown to result from the biological activity of auto- and heterotrophs
of shelf and deep-sea ecosystems. Carbohydrates and proteins prove to be the major biochemical components of DOM and POM,
respectively. Given high primary productivity, the carbohydrate content in POM is comparable to that of protein. In the southern
Kuril area, the high concentration of dissolved and particulate NAs (which exceeds that of dissolved protein) and the high
content of dissolved lipids are both strongly associated with local fish and zooplankton distribution. In the shelf and pelagic
waters, biological factors dominate the horizontal and vertical distribution patterns of the major biochemical components
of DOM and POM. The hydrological regime only affects these patterns in the straits of the Kuril Islands. For the first time,
the biochemical composition of DOM and POM in the sea surface microlayer (SML) is characterized. In this microlayer, the concentrations
of major biochemical components of DOM and POM are, to a great extent, higher than in the underlying layer. 相似文献
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16.
I G Antipov G V Karpova O S Golosov V V Novitski? G N Lapina 《Biulleten' eksperimental'no? biologii i meditsiny》1978,85(4):501-503
Peripheral blood and bone marrow indices were studied in inbred (101/H, CC57W, A2G, CBA/Lac, B6WV, C57BL/6, ACR) and mongrel mice. Normal values of the morphological composition of the blood and bone marrow were established. Comparative analysis demonstrated the existence of differences in the mentioned indices not only between the inbred and mongrel mice, but also within the individual animal strains. 相似文献
17.
Vitalii Zemlianskii Ksenia Ermokhina Gabriela Schaepman-Strub Nadezhda Matveyeva Elena Troeva Igor Lavrinenko Mikhail Telyatnikov Igor Pospelov Natalia Koroleva Nadezhda Leonova Olga Khitun Donald Walker Amy Breen Nikita Kadetov Olga Lavrinenko Tatiana Ivleva Sergey Kholod Nataliia Petrzhik Yakov Gunin Maria Kurysheva Anna Lapina Denis Korolev Ekaterina Kudr Elena Plekhanova 《Global Ecology and Biogeography》2023,32(10):1699-1706
18.
Boris A. Dmitriev Michail V. Ovchinnikov Elena B. Lapina Galina N. Pluzhnikova Igor V. Lopyrev Anatoly Ya. Chernyak 《Glycoconjugate journal》1992,9(4):168-173
Synthetic lipopeptideN-palmitoyltyrosyl-seryl-seryl-asparaginyl-alanine, an analogue of B-mitogenic tripalmitoyl-pentapeptide fromEscherichia coli lipoprotein, was coupled with an oligosaccharide hapten fromNeisseria meningitidis lipooligosaccharide to give a glycopeptidolipid conjugate — the artificial antigen of a new type possessing the type-specific microbial determinant.Abbreviations iBu
isobutyl
- But
t-butyl
- Boc
t-butoxycarbonyl
- DCC
N,N-dicyclohexylcarbodiimide
- DMF
N,N-dimethylformamide
- DMSO
dimethylsulfoxide
- ONB
N-hydroxy-5-norbornen-2,3-dicarboximide ester
- ONp
4-nitrophenyl ester
- Pal
palmitoyl
- TEMED
N,N,N,N-tetramethylethylenediamine
- Z
benzyloxycarbonyl
- KDO
2-keto-3-deoxyoctonic acid
- Hep
L-glycero-d-manno-heptose
- TPP
S-[2,3-bis(palmitoyloxy)-(2RS)propyl]-N-palmitoylcysteinyl-seryl-asparaginyl-alanine. 相似文献
19.
Bazhenov AI Konopleva MV Fel'dsherova AA El'gort DA Khats IuS Lapina NE Godkov MA Suslov AP 《Zhurnal mikrobiologii, epidemiologii, i immunobiologii》2008,(3):48-53
Comparative study of widely distributed on Russian market commercial test-systems for HBsAg detection by enzyme immunoassay was performed. Panel of serum samples containing mutant forms of HBsAg was developed for the study. It showed that only 2 out of 7 studied test-systems are able to detect mutant forms of HBsAg with the same sensitivity as "wild-type" forms of HBsAg. Test-systems based only on monoclonal antibodies did not detect HBsAg with G145R substitution in concentration 5 ng/ml. The study confirms the relevance of problem of HBsAg-mutants detection for hepatitis B immunodiagnostics. 相似文献
20.
Maslova I. P. Mouradyan E. A. Lapina S. S. Klyachko-Gurvich G. L. Los D. A. 《Russian Journal of Plant Physiology》2004,51(3):353-360
An analysis of lipid fatty acid composition in several unicellular and filamentous forms of mesophilic and thermophilic cyanobacteria was performed. At 47°C (the temperature of thermophilic cyanobacteria maintenance in the collection), the unicellular thermophilic Synechococcus strains were devoid of polyenoic acids as distinct from the mesophilic forms of this genus at the temperature of 20°C (the temperature of this cyanobacterial maintenance in the collection). In the thermophilic Synechococcus elongatusIPPAS B-267 strain, a decrease in temperature did not result in the occurrence of C18 polyenoic acids, but the quantitative relationship between the saturated and unsaturated fatty acids (S/U ratio) was decreased twofold. In contrast, the culturing of mesophilic strains at 25–32°C resulted in an increase in the S/U ratio due to an increase in the proportion of the 16:0 acid. In the Synechococcus IPPAS B-434 strain, this treatment resulted in a decrease in the relative content of monoenoic, mainly hexadecenoic, acids. The cyanobacterium Gloeobacter violaceus, which lacks thylakoids, and whose photosystems are formed in a cell membrane, contained polyenoic acids. The filamentous thermophilic cyanobacterium Phormidium laminosum, at the maintenance temperature of 47°C, did contain polyenoic acids, but their proportion was considerably lower than that in the filamentous mesophilic forms, such as Tolypothrix sp. and Spirulina platensis. A relative content of hexadecenoic acids in Ph. laminosum was higher than in the mesophilic forms. A possible role of hexadecenoic acids in the processes of adaptation of cyanobacteria to high temperatures is discussed. A relationship between the characteristics of fatty acid composition fixed by evolution and the changes caused by adaptation to a particular environment is considered. 相似文献