Sentence examples for been under selection pressure from inspiring English sources
Furthermore, according to Najafabadi et al. frequencies of codons in highly expressed genes that correspond to most abundant tRNA copy number may have been under selection pressure for error minimization.
In the previous analysis, sliding windows of 25 SNPs were used, and a 99.9% outlier threshold was applied to identify the most divergent regions of the genome that were likely to have been under selection pressure.
Alternatively, only a few proteins critical for growth may need to adapt to chemical ambiguity, and the highly interdependent phage proteins may therefore all have been under selection pressure.
Hosts are under selection pressure to evolve resistance against pathogens whereas pathogens are under selection pressure to evolve counter-resistance against the resistance mechanism of their host.
NLRs are highly variable in sequence, suggesting that they are under selection pressure, but also that they may be manipulated to generate proteins with new recognition specificities.
Of note is that the C3 region was under selection pressure in the infected infant from whom the BG505 virus was isolated.
In this way we estimated that on average 18% of the epitope precursors are under selection pressure in a host, i.e. are an actual epitope in that host.
While the proposed mechanism is straightforward and plausible, its protective effect depends on the fraction of epitope precursors that is under selection pressure in the donor host, but no longer in the recipient host.
Because length heterogeneity in the 5'-end will change the seed sequence and have a profound impact on the target spectrum, miRNAs are under selection pressure to maintain their seed sequences.
Here we propose an alternative explanation: as each MHC class I allele utilizes only a small fraction of the available HIV-1 epitope precursors, not all of the epitope precursors in a host are under selection pressure.
