2.Proteome Analysis of Ampelopsis Megalophylla by 2-DE
Jing HUANG ; Chun GUI ; Ye XIA
World Science and Technology-Modernization of Traditional Chinese Medicine 2014;(11):2380-2384
This study was aimed to investigate active ingredients from A mp e lop s is me galop hylla of protein expression by using two-dimensional gel electrophoresis (2-DE). Methods: isn this study, proteinsfrom the tender leaves of A mpelopsis megalophylla were precipitated by Tris-phenol extraction and ammonium acetate methanol precipitation. Then using 2-DE technology to isolate protein.Finally, 2-DE was analyzed by the scanner, and got protein characteristic maps. Result:According to the differences in ratio of gray value, the seven differential protein points were chosen to identify the mass spectrum. At present, two proteins were identified, namely the hypothetical protein and the unnamed protein product. Conclusion: the application of 2-DE technology for A mpelopsis megalophyllathe active ingredient of protein expression at the level of molecular research laid a good foundation.
3.Comparison on polysaccharide content and PMP-HPLC fingerprints of polysaccharide in stems and leaves of Dendrobium officinale.
Gui-Fen ZHOU ; Min-Xia PANG ; Su-Hong CHEN ; Gui-Yuan LV ; Mei-Qiu YAN
China Journal of Chinese Materia Medica 2014;39(5):795-802
In order to provide scientific basics for exploitation and sufficient application of Dendrobium officinale leaves resources, the phenol-sulfuric acid method was applied to determine the polysaccharide content. The monosaccharides were derivated by PMP and the derivatives were identified by HPLC-DAD-ESI-MS(n) and the contents of mannose and glucose were determined simultaneously. Similarity evaluation system for chromatographic fingerprint of traditional Chinese medicine (2004A) was employed to generate the mean chromatogram and similarity analysis of the samples was carried out. The results demonstrated that polysaccharide content, monosaccharide compositions and composition ratio had an obvious difference between stems and leaves. The polysaccharide content of stems was higher than that of leaves. Monosaccharide composition in leaf was significantly different from that in stem. The polysaccharide from stems was composed of mannose and glucose, however the polysaccharide of leaves was acid heteropolysaccharide and was mainly composed of five monosaccharides, including mannose, galacturonic acid, glucose, galactose and arabinose. The similarity value of the 14 batches was above 0.9, indicating that similarity of fingerprints among different samples was high. The study can provide evidence for expanding the medicinal parts of D. officinale.
Chromatography, High Pressure Liquid
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Dendrobium
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chemistry
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Mass Spectrometry
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Plant Extracts
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chemistry
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Plant Leaves
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chemistry
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Plant Stems
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chemistry
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Polysaccharides
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chemistry
5.Selective IgM deficiency in 2 children.
Shun-ying ZHAO ; An-xia JIAO ; Gui-fang ZHANG
Chinese Journal of Pediatrics 2007;45(11):871-871
Child
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Child, Preschool
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Female
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Humans
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Immunoglobulin M
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deficiency
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Male
9.Progress in Elimination of Elemental Sulfur by the Acidophilic Sulfur-oxidizing Bacteria
Jin-Lan XIA ; Cheng-Gui ZHANG ; An-An PENG ; Huan HE ;
China Biotechnology 2006;0(09):-
Metal sulfides are chemically attacked by Fe~ 3+ and H~+, resulting in the formation of elemental sulfur via polysulfides or thiosulfate pathway. Elemental sulfur may aggregate and even form a layer on the metal sulfide surface, which will inhibit leaching metals from the sulfides minerals. Elimination of inert elemental sulfur in a typical acidic environment can exclusively be by way of oxidation of acidophilic sulfur-oxidizing bacteria, such a way includes the attachment, transport and oxidation process of elemental sulfur by acidophilic sulfur-oxidizing bacteria. On the basis of analysis on the pertinent researches, the molecular mechanism of sulfur elimination by the acidophilic bacteria is far away from elucidated, and to attain that target, there are still much work to be done for elucidating the molecular mechanism on the attachment, transport and oxidation process of elemental sulfur by the acidophilic sulfur-oxidizing bacteria.
10.The Identification of Antagonistic Bacteria B-04 against Botrytis cinerea and Improving Biocontrol Effect through Genetic Modification with ?-1,3-glucanase Gene
Gui-Xia LI ; Hui-Quan MA ; Jing LIU ; Jin DONG ;
China Biotechnology 2006;0(04):-
Bacillus cereus B-04 antagonist to Botrytis cinerea were isolated from samples of tomato soil infected by Botrytis cinerea in Zibo, which are identified through a series of morphological and biochemical characteristics and the sequence of 16SrDNA. Aiming at enhancing the inhibitory effect of this strain, a 4.1kb DNA fragment containing ?-1,3-glucanases gene from pUC1940 was inserted into vector pBE2 and pHY300PLK to construct recombination plasmids, PBE2-glu and pHY300PLK-glu, which were transferred into Bacillus cereus B-04, resulting in a new strain named B-04-glu. Restriction enzyme digestion and ?-1,3-glucanases plate culture confirmed that B-04-glu contained a functional ?-1,3-glucanases gene. Compared to the wild strain B-04, B-04-glu had an increased inhibitory effect against Botrytis cinerea on tomato.