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Immunoglobulins are important elements of the adaptive immune system that bind to an immense variety of microbial antigens to neutralize infectivity and specify effector functions. In the present study, the immunoglobulin heavy chain constant region (IGHC) genes from marine mammals were identified and compared with those of their terrestrial relatives to explore their genomic organization and evolutionary characteristics. The genomic organization of marine mammal IGHC genes was shown to be conservative with other eutherian mammals. Stronger signals of positive selection on IGHC were revealed in terrestrial mammals than that in marine mammals with the branch-site model, displaying different selective pressure, which might suggest their divergent adaptations to contrasted environments.
Pubmed ID: 29723770
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Web application to search nucleotide databases using a nucleotide query. Algorithms: blastn, megablast, discontiguous megablast.
View all literature mentionsSoftware program for phylogenetic analyses of large datasets under maximum likelihood.
View all literature mentionsA free public server for comparative analysis of sequence alignments using state-of-the-art statistical models. This service is brought to you by the viral evolution group at the School Of Medicine of the University of California, San Diego.
View all literature mentionsTool to search translated nucleotide databases using a protein query.
View all literature mentionsTHIS RESOURCE IS NO LONGER IN SERVICE.Documented on February 28,2023. Software program for Bayesian inference and model choice across a wide range of phylogenetic and evolutionary models.
View all literature mentionsPackage of programs for phylogenetic analyses of DNA or protein sequences using maximum likelihood. PAML estimates parameters and tests hypotheses to study the evolutionary process from a phylogenetic tree.
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