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排序方式: 共有109条查询结果,搜索用时 15 毫秒
1.
Toshitsugu Fukumaru Hiroshi Awata Noritaka Hamma Toshiaki Komatsu 《Bioscience, biotechnology, and biochemistry》2013,77(2):519-527
The synthesis of novel acetylenic ketone compounds and anti-inflammatory and antimicrobial activities are herein described. 相似文献
2.
Takanori Awata Mamoru Oshiki Tomonori Kindaichi Noriatsu Ozaki Akiyoshi Ohashi Satoshi Okabe 《Applied and environmental microbiology》2013,79(13):4145-4148
The phylogenetic affiliation and physiological characteristics (e.g., Ks and maximum specific growth rate [μmax]) of an anaerobic ammonium oxidation (anammox) bacterium, “Candidatus Scalindua sp.,” enriched from the marine sediment of Hiroshima Bay, Japan, were investigated. “Candidatus Scalindua sp.” exhibits higher affinity for nitrite and a lower growth rate and yield than the known anammox species. 相似文献
3.
Physiological characterization of anaerobic ammonium oxidizing bacterium ‘Candidatus Jettenia caeni’ 下载免费PDF全文
Muhammad Ali Mamoru Oshiki Takanori Awata Kazuo Isobe Zenichiro Kimura Hiroaki Yoshikawa Daisuke Hira Tomonori Kindaichi Hisashi Satoh Takao Fujii Satoshi Okabe 《Environmental microbiology》2015,17(6):2172-2189
To date, six candidate genera of anaerobic ammonium‐oxidizing (anammox) bacteria have been identified, and numerous studies have been conducted to understand their ecophysiology. In this study, we examined the physiological characteristics of an anammox bacterium in the genus ‘Candidatus Jettenia’. Planctomycete KSU‐1 was found to be a mesophilic (20–42.5°C) and neutrophilic (pH 6.5–8.5) bacterium with a maximum growth rate of 0.0020 h?1. Planctomycete KSU‐1 cells showed typical physiological and structural features of anammox bacteria; i.e. 29N2 gas production by coupling of 15NH4+ and 14NO2?, accumulation of hydrazine with the consumption of hydroxylamine and the presence of anammoxosome. In addition, the cells were capable of respiratory ammonification with oxidation of acetate. Notably, the cells contained menaquinone‐7 as a dominant respiratory quinone. Proteomic analysis was performed to examine underlying core metabolisms, and high expressions of hydrazine synthase, hydrazine dehydrogenase, hydroxylamine dehydrogenase, nitrite/nitrate oxidoreductase and carbon monoxide dehydrogenase/acetyl‐CoA synthase were detected. These proteins require iron or copper as a metal cofactor, and both were dominant in planctomycete KSU‐1 cells. On the basis of these experimental results, we proposed the name ‘Ca. Jettenia caeni’ sp. nov. for the bacterial clade of the planctomycete KSU‐1. 相似文献
4.
5.
Imai D Mori K Horie-Inoue K Gehlbach PL Awata T Inoue S Yoneya S 《Journal of ocular biology, diseases, and informatics》2010,3(2):53-59
We determined whether there is an association between complement factor H (CFH), high-temperature requirement A-1 (HTRA1), vascular endothelial growth factor (VEGF), and pigment epithelium-derived factor (PEDF) genotypes and the response to treatment with a single intravitreous injection of bevacizumab for age-related macular degeneration (AMD). Eighty-three patients with exudative AMD treated by bevacizumab injection were genotyped for three single nucleotide polymorphisms (SNPs; rs800292, rs1061170, rs1410996) in the CFH gene, a rs11200638-SNP in the HTRA1 gene, three SNPs (rs699947, rs1570360, rs2010963) in the VEGF gene, and four SNPs (rs12150053, rs12948385, rs9913583, rs1136287) in the PEDF gene using a TaqMan assay. The CT genotype (heterozygous) of CFH-rs1061170 was more frequently represented in nonresponders in vision than TT genotypes (nonrisk allele homozygous) at the time points of 1 and 3 months, while there was no CC genotype (risk allele homozygous) in our study cohort (p = 7.66 × 10−3, 7.83 × 10−3, respectively). VEGF-rs699947 was also associated with vision changes at 1 month and PEDF-rs1136287 at 3 months (p = 5.11 × 10−3, 2.05 × 10−2, respectively). These variants may be utilized for genetic biomarkers to estimate visual outcomes in the response to intravitreal bevacizumab treatment for AMD. 相似文献
6.
Tanaka M Matsumoto T Yanai S Domukai M Toki D Hayashi T Kiuchi S Yasue H Uenishi H Kobayashi E Awata T 《Animal genetics》2003,34(4):255-263
Comparative mapping studies facilitate the identification of genes located in quantitative trait locus (QTL) regions in domestic animals by utilizing information from the human genome. Radiation hybrid (RH) mapping is effective for this purpose because of its high resolution in ordered gene mapping on chromosomes. We constructed an RH map of pig chromosome 7, by adding 23 markers associated with genes. This RH map clearly demonstrated the mosaic of homology between pig chromosome 7 (SSC7) and human chromosomes 6, 14 and 15 at a 'gene' level, and was confirmed by linkage analysis. Clarification of the homology of SSC7 to human chromosomes will contribute to the elucidation of the gene(s) responsible for QTL detected on this chromosome. 相似文献
7.
Hiraiwa H Sawazaki T Suzuki K Fujishima-Kanaya N Toki D Ito Y Uenishi H Hayashi T Awata T Yasue H 《Cytogenetic and genome research》2003,101(1):84-89
Loci affecting swine intramuscular fat content, backfat thickness, carcass weight, and daily weight gain were assigned to regions of swine chromosome (SSC) 4, which were shown to correspond to human chromosome (HSA) 1p22--> q25 by ZOO-FISH, bidirectional chromosome painting, as well as by the linkage map of genes. In order to select candidate genes responsible for the above traits from the human genome database, precise correspondence between SSC4 and HSA1 is a prerequisite. In the present study, 27 genes, PTGFR, GBP1, GBP2, GFI1, GCLM, ABCD3, EXTL2, KCNA3, ADORA3, KCND3, WNT2B, NRAS, SYCP1, PTGFRN, IGSF2, NOTCH2, S100A10, SHC1, SSR2, LMNA, CCT3, CD5L, PEA15, FCER1G, EAT2, DDR2, and LAMB3, located in the HSA1 region corresponding to SSC4 or possibly SSC4, were assigned to the IMpRH map. The alignment of genes from centromere to telomere in the SSC4 q arm is basically conserved in HSA1p22-->q25 with the direction from the q arm to the p arm, which is in good agreement with results from linkage mapping. In addition, the present study first demonstrated that WNT2B residing in the middle of the HSA1 region was assigned to SSC18 with a high lod score (> 5), and that at least three intrachromosomal rearrangements occurred in the region in the process of swine and human evolution. PTGFR, and LAMB3 localized at both ends of the HSA1 region were assigned to SSC6 and SSC9, respectively, which is consistent with regional correspondence reported earlier. In the course of the above analysis, microsatellite markers were developed in the proximity of eleven genes localized on SSC4, and three genes on other swine chromosomes. 相似文献
8.
Interaction of the calcium-sensing receptor and filamin, a potential scaffolding protein 总被引:5,自引:0,他引:5
Awata H Huang C Handlogten ME Miller RT 《The Journal of biological chemistry》2001,276(37):34871-34879
In many cases, the biologic responses of cells to extracellular signals and the specificity of the responses cannot be explained solely on the basis of the interactions of known signaling proteins. Recently, scaffolding and adaptor proteins have been identified that organize signaling proteins in cells and that contribute to the nature and specificity of signaling pathways. In an effort to identify proteins that might organize the signaling system(s) activated by the extracellular Ca(2+) receptor (CaR), we used a bait construct representing the intracellular C terminus of the human CaR and the yeast two hybrid system to screen a human kidney cDNA library. We identified a clone representing the C-terminal 1042 amino acids (aa) of the cytoskeletal protein filamin (ABP-280). Analysis of truncation and deletion constructs of the CaR C terminus and the filamin cDNA clone demonstrated that the CaR and filamin interact via regions containing aa 907-997 of the CaR C terminus and aa 1566-1875 of filamin. Interaction of the two proteins in mammalian HEK-293 cells was demonstrated by co-immunoprecipitation and colocalization of them using immunofluorescence microscopy. The functional importance of their interaction was documented by transiently expressing the CaR in M2 melanoma cells that lack filamin, or in A7 melanoma cells that stably express filamin, and demonstrating that the CaR activated ERK only in the presence of filamin. Co-expression of the CaR with a peptide derived from the region of the CaR C terminus that interacts with filamin reduced the ability of the CaR to activate p42ERK in a dose-dependent manner, but did not inhibit the ability of the ET(A) receptor to activate ERK. The fact that filamin interacts with the CaR and other cell signaling proteins including mitogen-activated protein kinases and small GTPases, indicates that it may act as a scaffolding protein to organize cell signaling systems involving the CaR. 相似文献
9.
Nakayama K Awata S Zhang J Ebinuma H Mariyama T Kodama H 《Physiological chemistry and physics and medical NMR》2000,32(1):21-26
The concentrations of sulfur-containing amino acids, taurine, cystathionine, methionine and cystine, as well as cystathionine beta-synthase and gamma-lyase activities in various tissues of Agkistrodon blomhoffi (mamushi) were measured. The concentration of taurine in examined tissues was greater than the concentration of other sulfur-containing amino acids. The concentration of cystathionine in various tissues was also much higher than those of methionine and cystine, but the concentration of cystathionine in the brain was lower than that of methionine. In all tissues examined in this study, cystathionine beta-synthase activity was much higher than that of cystathionine gamma-lyase. The ratios of cystathionine beta-synthase to gamma-lyase activities in various tissues were 5.6 to approximately 85.6. The concentration of sulfur-containing amino acids in muscle and skin divided into eight portions of the body were also determined. The concentrations of methionine and cystine in each portion of muscle and skin were almost the same, but the concentrations of taurine and cystathionine in each portion of the body were varied. 相似文献
10.
Cystathionine accumulated in several tissues of dams and fetuses by a single intraperitoneal administration of L-proparglyglycine to pregnant rats. Cystathionine in the liver of dams reached its maximal level at about 15 hrs after L-proparglyglycine injection (10 mg/300g), while that in the kidney and brain of dams, and in the liver, kidney, and brain of fetuses reached a maximum at about 21 hrs. The content of cystine in the liver of fetuses decreased gradually in proportion to the amount of L-proparglyglycine administered. Cystathionine gamma-lyase activity in the liver of dams and fetuses decreased to about 2-4% of that of control rats at 15 hrs after L-proparglyglycine injection, and that in the kidney and pancreas of dams to about 10-20% of that of control rats. On the other hand, cystathionine beta-synthase activity did not show significant changes from that of control rats. 相似文献