ArticleJournal of molecular evolution2007
Positively selected codons in immune-exposed loops of the vaccine candidate OMP-P1 of Haemophilus influenzae.
Article in Journal of molecular evolution, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 14 citations in OpenAlex.
- Article
- Identification of novel vaccine candidates against Acinetobacter baumannii using reverse vaccinology.Human vaccines & immunotherapeutics · 2015Article
- Article
- Mucosal immunization with the Moraxella Catarrhalis porin m35 induces enhanced bacterial clearance from the lung: a possible role for opsonophagocytosis.Frontiers in immunology · 2011Article
- Estimates of the effect of natural selection on protein-coding content.Molecular biology and evolution · 2010Article
- Accelerated microevolution in an outer membrane protein (OMP) of the intracellular bacteria Wolbachia.BMC evolutionary biology · 2010Article
- Positive natural selection in the evolution of human metapneumovirus attachment glycoprotein.Virus research · 2008Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The high levels of variation in surface epitopes can be considered as an evolutionary hallmark of immune selection. New computational tools enable analysis of this variation by identifying codons that exhibit high rates of amino acid changes relative to the synonymous substitution rate. In the outer membrane protein P1 of Haemophilus influenzae, a vaccine candidate for nontypeable strains, we identified four codons with this attribute in domains that did not correspond to known or assumed B- and T-cell epitopes of OMP-P1. These codons flank hypervariable domains and do not appear to be false positives as judged from parsimony and maximum likelihood analyses. Some closely spaced positively selected codons have been previously considered part of a transmembrane domain, which would render this region unsuited for inclusion in a vaccine. Secondary structure analysis, three-dimensional structural database searches, and homology modeling using FadL of E. coli as a structural homologue, however, revealed that all positively selected codons are located in or near extracellular looping domains. The spacing and level of diversity of these positively selected and exposed codons in OMP-P1 suggest that vaccine targets based on these and conserved flanking residues may provide broad coverage in H. influenzae.
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