HEAT SHOCK PROTEIN 90 GENES OF TWO SPECIES OF POULTRY EIMERIA: EXPRESSION AND EVOLUTIONARY ANALYSIS

K. B. Miska R. H. Fetterer W. Min* and H. S. Lillehoj

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HEAT SHOCK PROTEIN 90 GENES OF TWO SPECIES OF POULTRY EIMERIA: EXPRESSION AND EVOLUTIONARY ANALYSIS

机译：两种禽类热休克蛋白90基因的表达和进化分析

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Heat shock protein 90 (Hsp90) is 1 of the most abundant and evolutionarily conserved proteins. In most species, Hsp90 is essential for proper cell function. In this study, we present the molecular analysis of Hsp90 from Eimeria species, the causative agents of avian coccidiosis. The full-length Eimeria acervulina Hsp90 complementary DNA was isolated from intestinal intraepithelial lymphocytes of Eimeria-infected chickens. From evolutionary analysis and sequence identity, it is likely that Eimeria Hsp90 sequences described thus far encode the cytosolic versions of the protein. Although at the nucleotide and amino acid levels Eimeria tenella and E. acervulina Hsp90 are highly similar, their expression profiles differ considerably. Although E. tenella transcripts were detected in all developmental stages tested, E. acervulina transcripts were not found in oocysts undergoing sporulation or in fully sporulated oocysts, suggesting that messenger RNA expression may be regulated quite differently between Eimeria species.

机译：热激蛋白90（Hsp90）是最丰富且进化上保守的蛋白之一。在大多数物种中，Hsp90对于正常的细胞功能至关重要。在这项研究中，我们介绍了来自禽艾美球虫病的Eimeria物种中Hsp90的分子分析。从艾美球虫感染的鸡的肠上皮内淋巴细胞中分离出全长的艾美球虫小球藻Hsp90互补DNA。从进化分析和序列同一性来看，迄今为止描述的艾美尔球虫Hsp90序列很可能编码该蛋白的胞质形式。尽管在核苷酸和氨基酸水平上，艾美球虫和小球藻Hsp90高度相似，但它们的表达谱差异很大。尽管在测试的所有发育阶段均检测到了大肠杆菌的转录本，但在进行孢子形成的卵囊或完全形成孢子的卵囊中均未发现小球藻的转录本，这表明信使RNA的表达可能在艾美球虫属之间有所不同。

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《Journal of Parasitology》 |2005年第2期|p.00000300-00000306|共7页
作者
K. B. Miska R. H. Fetterer W. Min* and H. S. Lillehoj;
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USDA-ARS, Animal Parasitic Diseases Laboratory, 10300 Baltimore Avenue, Building 1042 BARC-East, Beltsville, Maryland 20705. kmiska@anri.barc.usda.gov*Present address: Department of Animal Science, Sunchon National University, 315 Maegok-Dong, Sunchon City, Chonnam, 540-742 Korea;

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HEAT SHOCK PROTEIN 90 GENES OF TWO SPECIES OF POULTRY EIMERIA: EXPRESSION AND EVOLUTIONARY ANALYSIS

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