منابع مشابه
Junk DNA - repetitive sequences
Eukaryote and also human DNA contains large portion of noncoding sequences. As for the coding DNA, the noncoding DNA may be unique or in more identical or similar copies. DNA sequences with high copy numbers are then called repetitive sequences. If the copies of a sequence motif lie adjacent to each other in a block, or an array, we are speaking about tandem repeats, the repetitive sequences di...
متن کاملAligning sequences with repetitive motifs
Pairwise sequence alignment is among the most intensively studied problems in computational biology. We present a method for alignment of two sequences containing repetitive motifs. This is motivated by biological studies of proteins with zinc finger domain, an important group of regulatory proteins. Due to their evolutionary history, sequences of these proteins contain a variable number of dif...
متن کاملTranscriptional "silencer" element in rat repetitive sequences
The enhancer elements from either simian virus 40 or murine sarcoma virus activate the expression of a transfected rat insulin 1 (r11) gene when placed within 2.0 kilobases or less of the rl1 gene cap site. Inclusion of 4.0 kilobases of upstream r11 sequence, however, results in a substantial reduction in the enhancer-dependent insulin gene expression. These observations suggested that a negati...
متن کاملHighly repetitive DNA sequences in cyanobacterial genomes.
We characterized three distinct families of repeated sequences in the genome of the cyanobacterium Calothrix sp. strain PCC 7601. These repeated sequences were present at a level of about 100 copies per Calothrix genome and consisted of tandemly amplified heptanucleotides. These elements were named short tandemly repeated repetitive (STRR) sequences. We used the three different Calothrix STRR s...
متن کاملDNA Fingerprinting Based on Repetitive Sequences of Iranian Indigenous Lactobacilli Species by (GTG)5- REP-PCR
Background and Objective: The use of lactobacilli as probiotics requires the application of accurate and reliable methods for the detection and identification of bacteria at the strain level. Repetitive sequence-based polymerase chain reaction (rep-PCR), a DNA fingerprinting technique, has been successfully used as a powerful molecular typing method to determine taxonomic and phylogenetic relat...
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ژورنال
عنوان ژورنال: Aging
سال: 2021
ISSN: 1945-4589
DOI: 10.18632/aging.203020