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Similarly, the same sequences in the fugu genome have 68% identity to human UCEs, despite the human genome only reliably aligning to 1.8% of the fugu genome. [4] Despite often being noncoding DNA, [6] some ultraconserved elements have been found to be transcriptionally active, producing non-coding RNA molecules. [7]
UCbase is a database of ultraconserved sequences (UCRs or UCEs) that were first described by Bejerano, G. et al. [2] in 2004. They are highly conserved genome regions that share 100% identity among human, mouse and rat. UCRs are 481 sequences longer than 200 bases.
Within a sequence, amino acids that are important for folding, structural stability, or that form a binding site may be more highly conserved. [17] [18] The nucleic acid sequence of a protein coding gene may also be conserved by other selective pressures. The codon usage bias in some organisms may restrict the types of synonymous mutations in a ...
Sequences are the amino acids for residues 120-180 of the proteins. Residues that are conserved across all sequences are highlighted in grey. Below the protein sequences is a key denoting conserved sequence (*), conservative mutations (:), semi-conservative mutations (.), and non-conservative mutations ( ). [2]
MIMt is a compact non-redundant 16S database for a rapid metagenomic samples identification. It is composed of 48.749 full 16S sequences belonging to 24,626 well classified bacteria and archaea species. All sequences were obtained from complete genomes deposited in NCBI and for each of the sequences full taxonomic hierarchy is provided.
The repeats, or duplications, are typically 10–300 kb in length, and bear greater than 95% sequence identity. Though rare in most mammals, LCRs comprise a large portion of the human genome owing to a significant expansion during primate evolution. [1] In humans, chromosomes Y and 22 have the greatest proportion of SDs: 50.4% and 11.9% ...
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The use of RAD markers for genetic mapping is often called RAD mapping. An important aspect of RAD markers and mapping is the process of isolating RAD tags, which are the DNA sequences that immediately flank each instance of a particular restriction site of a restriction enzyme throughout the genome. [1]