Comparative sequence analyses reveal rapid and divergent evolutionary changes of theWFDClocus in the primate lineage
- 31 January 2007
- journal article
- research article
- Published by Cold Spring Harbor Laboratory in Genome Research
- Vol. 17 (3), 276-286
- https://doi.org/10.1101/gr.6004607
Abstract
The initial comparison of the human and chimpanzee genome sequences revealed 16 genomic regions with an unusually high density of rapidly evolving genes. One such region is the whey acidic protein (WAP) four-disulfide core domain locus (orWFDClocus), which contains 14WFDCgenes organized in two subloci on human chromosome 20q13. WAP protease inhibitors have roles in innate immunity and/or the regulation of a group of endogenous proteolytic enzymes called kallikreins. In human, the centromericWFDCsublocus also contains the rapidly evolving seminal genes, semenogelin 1 and 2 (SEMG1andSEMG2). The rate ofSEMG2evolution in primates has been proposed to correlate with female promiscuity and semen coagulation, perhaps related to post-copulatory sperm competition. We mapped and sequenced the centromericWFDCsublocus in 12 primate species that collectively represent four different mating systems. Our analyses reveal a 130-kb region with a notably complex evolutionary history that has included nested duplications, deletions, and significant interspecies divergence of both coding and noncoding sequences; together, this has led to striking differences of this region among primates and between primates and rodents. Further, this region contains six closely linked genes (WFDC12,PI3,SEMG1,SEMG2,SLPI, andMATN4) that show strong patterns of adaptive selection, although an unambiguous correlation between gene mutation rates and mating systems could not be established.Keywords
This publication has 59 references indexed in Scilit:
- The evolution of a genetic locus encoding small serine proteinase inhibitorsBiochemical and Biophysical Research Communications, 2005
- Functional preservation of duplicated pair for RSVS III gene in the REST locus of rat 3q42Biochemical and Biophysical Research Communications, 2005
- The International HapMap ProjectNature, 2003
- Multiple sequence alignment with the Clustal series of programsNucleic Acids Research, 2003
- A Direct Approach to False Discovery RatesJournal of the Royal Statistical Society Series B: Statistical Methodology, 2002
- Positive selection of a gene family during the emergence of humans and African apesNature, 2001
- The Gene of the Protease Inhibitor SKALP/Elafin Is a Member of the Rest Gene FamilyBiochemical and Biophysical Research Communications, 1996
- Basic Local Alignment Search ToolJournal of Molecular Biology, 1990
- Basic local alignment search toolJournal of Molecular Biology, 1990
- Phylogenies and the Comparative MethodThe American Naturalist, 1985