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Biological Data MiningHomePageBioDataBioDigBioGraphicsGenomeFactsBioDrugBioQuestionsAboutBioDig: Finding Homologous GenesPublished on September 21, 2012,by gangcai in BioDig.1. NCBI HomoloGenelink: http://www.ncbi.nlm.nih.gov/HomoloGene/HTML/homologene_buildproc.htmlProteins from input organisms-> bastp-> find DNA sequence of proteins -> synteny -> maximaization global score2. Online blog 1link: http://www.personal.psu.edu/zuz17/blogs/psu_life/2011/02/understand-ucsc-netchain-alignment-1.html3. paper1link: http://genome.cshlp.org/content/11/5/803.full“Computational Inference of Homologous Gene Structures in the Human Genome”4. paper2link: http://www.sciencemag.org/content/320/5875/486.full”Eukaryotic genomes differ in the degree to which genes remain on corresponding chromosomes (synteny) and in corresponding orders (collinearity) over time (1). For example, most eutherian (placental mammal) orders have incurred only moderate reshuffling of chromosomal segments since descent from common ancestors ∼130 million years ago (2). Indeed, karyotype evolution along major vertebrate lineages appears to have been slow since an inferred whole-genome duplication occurred ∼500 million years ago (3). Accordingly, accurate identification of orthologs across eutherian taxa is relatively routine, and deduction of synteny and collinearity is often straightforward with best-in-genome criteria (4), identifying one-to-one best matching chromosomal regions in pairwise genome comparisons.”5. Through evolutionary analysislink: http://genome.cshlp.org/content/8/3/163.full6. Ensembl Gene Homolog prediction methodlink: http://www.ensembl.org/info/docs/compara/homology_method.html”http://www.ensembl.org/info/website/news.htmlProteinTrees and homologies (all species)GeneTrees (protein-coding) with new/updated genebuilds and assembliesClustering using hcluster_sgMultiple sequence alignments using MCoffee or MafftPhylogenetic reconstruction using TreeBeSTHomology inferencePairwise gene-based dN/dS scores for high coverage species pairs only (both on orthologues and paralogues)GeneTree stable ID mappingPer family gene dynamics using CAFEncRNAtrees and homologies (all species)Classification based on Rfam modelsMultiple sequence alignments with InfernalPhylogenetic reconstruction using RAxMLPhylogenetic reconstruction using FastTree2 and RAxML-Light for very big familiesAdditional multiple sequence alignments with Prank (w/ genomic flanks)Additional phylogenetic reconstruction using PhyML and NJPhylogenetic tree merging using TreeBeSTPer family gene dynamics using CAFEHomology inference”7. UCSC(chimpanzee as example)“The RNAs were aligned against the chimp genome using blat; those with an alignment of less than 15% were discarded. When a single RNA aligned in multiple places, the alignment having the highest base identity was identified. Only alignments having a base identity level within 0.5% of the best and at least 25% ba
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