BMC Bioinformatics

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MCALIGN2: Faster, accurate global pairwise alignment of non-coding DNA sequences based on explicit models of indel evolution

Jun Wang*, Peter D Keightley and Toby Johnson

BMC Bioinformatics 2006, 7:292 doi:10.1186/1471-2105-7-292

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Research article   Open Access

Patterns of selective constraints in noncoding DNA of rice

Xingyi Guo, Yu Wang, Peter D Keightley, Longjiang Fan BMC Evolutionary Biology 2007, 7:208 (1 November 2007)

Research article   Open Access Highly Accessed

Transcription-related mutations and GC content drive variation in nucleotide substitution rates across the genomes of Arabidopsis thaliana and Arabidopsis lyrata

Leah J DeRose-Wilson, Brandon S Gaut BMC Evolutionary Biology 2007, 7:66 (23 April 2007)

Nucleotide substitution rate variation in the intergenic regions of Arabidopsis thaliana relative to A. lyrata is linked to GC content and gene density, suggesting that the apparent selective constraint may be illusory, an effect of base composition.

Research   Open Access

Reduced efficacy of selection in regions of the Drosophila genome that lack crossing over

Penelope R Haddrill, Daniel L Halligan, Dimitris Tomaras, Brian Charlesworth Genome Biology 2007, 8:R18 (6 February 2007)

Observations from a genome-wide comparison of Drosophila melanogaster and Drosophila yakuba are consistent with a severe reduction in the efficacy of selection in the absence of crossing over, resulting in the accumulation of deleterious mutations in these regions.

Methodology article   Open Access Highly Accessed

Logarithmic gap costs decrease alignment accuracy

Reed A Cartwright BMC Bioinformatics 2006, 7:527 (5 December 2006)

Because the distribution of indel sizes follows a power law, using logarithmic gap costs was expected to give biologically authentic sequence alignments, but this actually lowers accuracy compared to existing algorithms that use affine gap costs.