Results 21 to 30 of about 45,603 (283)
A willow sex chromosome reveals convergent evolution of complex palindromic repeats
Genome Biology, 2020 Background Sex chromosomes have arisen independently in a wide variety of species, yet they share common characteristics, including the presence of suppressed recombination surrounding sex determination loci.
Ran Zhou +15 more
doaj +1 more source
A method to find palindromes in nucleic acid sequences [PDF]
Bioinformation, 2013 Various types of sequences in the human genome are known to play important roles in different aspects of genomic functioning. Among these sequences, palindromic nucleic acid sequences are one such type that have been studied in detail and found to influence a wide variety of genomic characteristics.
Mani Shankar +3 more
openaire +2 more sources
Palindromic Sequences of the Markov Spectrum [PDF]
Mathematical Notes, 2019 We study the periods of Markov sequences, which are derived from the continued fraction expression of elements in the Markov spectrum. This spectrum is the set of minimal values of indefinite binary quadratic forms that are specially normalised. We show that the periods of these sequences are palindromic after a number of circular shifts, the number of
openaire +4 more sources
Repair by recombination of DNA containing a palindromic sequence [PDF]
Molecular Microbiology, 1997 We report here that homologous recombination functions are required for the viability of Escherichia coli cells maintaining a 240 bp chromosomal inverted repeat (palindromic) sequence. Wild‐type cells can successfully replicate this palindrome but recA, recB or recC mutants carrying the palindrome are unviable.
David J. Pinder +2 more
openaire +3 more sources
An algorithm to find all palindromic sequences in proteins [PDF]
Journal of Biosciences, 2013 A palindrome is a set of characters that reads the same forwards and backwards. Since the discovery of palindromic peptide sequences two decades ago, little effort has been made to understand its structural, functional and evolutionary significance.
Prasanth, N +2 more
openaire +3 more sources
Nature Communications, 2016 The IgH3’ regulatory region contains an evolutionarily conserved palindromic sequence flanking important enhancer elements. Here the authors show that the palindrome is required for generating antibody diversity.
Alexis Saintamand +7 more
doaj +1 more source
PCR-mediated One-day Synthesis of Guide RNA for the CRISPR/Cas9 System
Bio-Protocol, 2021 Nowadays, CRISPR (clustered regularly interspaced short palindromic repeats) and the CRISPR-associated protein (Cas9) system play a major role in genome editing. To target the desired sequence of the genome successfully, guide RNA (gRNA) is indispensable
Naim Hassan +3 more
doaj +1 more source
BMC Bioinformatics, 2008 Background It has been previously shown that palindromic sequences are frequently observed in proteins. However, our knowledge about their evolutionary origin and their possible importance is incomplete.
Pezeshk Hamid +7 more
doaj +1 more source
A single parS sequence from the cluster of four sites closest to oriC is necessary and sufficient for proper chromosome segregation in Pseudomonas aeruginosa. [PDF]
PLoS ONE, 2015 Among the mechanisms that control chromosome segregation in bacteria are highly-conserved partitioning systems comprising three components: ParA protein (a deviant Walker-type ATPase), ParB protein (a DNA-binding element) and multiple cis-acting ...
Paulina Jecz +3 more
doaj +1 more source
Statistics on Lattice Walks and q-Lassalle Numbers [PDF]
Discrete Mathematics & Theoretical Computer Science, 2015 This paper contains two results. First, I propose a $q$-generalization of a certain sequence of positive integers, related to Catalan numbers, introduced by Zeilberger, see Lassalle (2010).
Lenny Tevlin
doaj +1 more source