کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9127290 | 1160207 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative analysis of two genomic regions among four strains of Buchnera aphidicola, primary endosymbiont of aphids
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کلمات کلیدی
ORFmolar fraction of guanine and cytosine in DNAG+CrRNAPFGEtRNACoGRibosomal RNA - RNA RibosomalBasic Local Alignment Search Tool - ابزار جستجوی محلی سازگاری محلیPulse field gel electrophoresis - الکتروفورز ژل فیلد پالسtransfer RNA - انتقال RNABlast - انفجارBase pair(s) - جفت پایه (ها)degrees of freedom - درجه آزادیopen reading frame - قاب خواندن بازG+C content - محتوای G + CGC content - محتوای GCMyr - میرmillion years - میلیون سالEvolutionary genomics - ژنومیک تکاملیGenome reduction - کاهش ژنومkilobase(s) - کیلو بایت (ها)
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
ژنتیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Comparative analysis of two genomic regions among four strains of Buchnera aphidicola, primary endosymbiont of aphids Comparative analysis of two genomic regions among four strains of Buchnera aphidicola, primary endosymbiont of aphids](/preview/png/9127290.png)
چکیده انگلیسی
Preliminary analysis of two selected genomic regions of Buchnera aphidicola BCc, the primary endosymbiont of the cedar aphid Cinara cedri, has revealed a number of interesting features when compared with the corresponding homologous regions of the three B. aphidicola genomes previously sequenced, that are associated with different aphid species. Both regions exhibit a significant reduction in length and gene number in B. aphidicola BCc, as it could be expected since it possess the smallest bacterial genome. However, the observed genome reduction is not even in both regions, as it appears to be dependent on the nature of their gene content. The region fpr-trxA, that contains mainly metabolic genes, has lost almost half of its genes (45.6%) and has reduced 52.9% its length. The reductive process in the region rrl-aroK, that contains mainly ribosomal protein genes, is less dramatic, since it has lost 9.3% of genes and has reduced 15.5% of its length. Length reduction is mainly due to the loss of protein-coding genes, not to the shortening of ORFs or intergenic regions. In both regions, G+C content is about 4% lower in BCc than in the other B. aphidicola strains. However, when only conserved genes and intergenic regions of the four B. aphidicola strains are compared, the G+C reduction is higher in the fpr-trxA region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gene - Volume 345, Issue 1, 17 January 2005, Pages 73-80
Journal: Gene - Volume 345, Issue 1, 17 January 2005, Pages 73-80
نویسندگان
Vicente Pérez-Brocal, Amparo Latorre, Rosario Gil, Andrés Moya,