Pairwise sequence alignment determines whether there exists a molecular evolutionary relationship between two sequences by comparing similar regions and conserved sites.
In general, the rational designing of protein is a conventional and useful method to study the structure-function relationship of the protein with the partial molecular evolutionary information such as sequence alignments.
The AZFc region consists almost entirely of very long amplicons that are thought to have been acquired through three molecular evolutionary processes: persistence of sequences previously shared with the X chromosome, duplication and transposition of autosomal sequences, and retroposition of autosomal encoded mRNAs [ 10].
As compared to the sequences that have been traditionally used for molecular evolutionary studies, nuclear genes provide sequence evolution rates elevated in comparison to chloroplast DNA (cpDNA) and rDNA [ 55, 56], are biparentally inherited (in contrast to cpDNA) and are less frequently subjected to concerted evolution than rDNA [ 57].
Moreover, our work yielded fruitful results with respect to estimating the molecular evolutionary rates of mtDNA sequences (Cytb and CR), which change depending on the time that has passed over the last 100,000 years.
We applied molecular evolutionary analyses to DNA sequences from 9 housekeeping genes and gyrA, parC and porB of 24 quinolone resistant N. gonorrhoeae (QRNG) and 24 quinolone sensitive isolates collected in Israel during 2000 2001.
In order to investigate phylogenetic relationships and the molecular evolutionary history of the sequences in these five Rosaceae species (pear, apple, peach, mei and strawberry), a phylogenetic analysis was conducted and a phylogenetic tree was generated using the neighbor joining (NJ) method; the maximum-likelihood (ML) method was also performed in MEGA5.
Phylogenetic and molecular evolutionary analyses of these sequences suggested that an ancestral spiggin gene originated from a member of the mucin gene family as a single gene in the common ancestor of teleosts, and gene duplications of spiggin have occurred in the stickleback lineage.
The team produced a kind of molecular clock by establishing an evolutionary sequence for single-domain proteins.
Similarities/identities between selected pairs of DNA or protein sequences were calculated using MatGAT (Matrix Global Alignment Tool) (http://bitincka.com/ledion/matgat/). Phylogenetic and molecular evolutionary analyses of translated gene sequences (full ORF) of the selected H. irregulare GH61 models were conducted using the MEGA5 software (Tamura et al. 2011).
