Nucleotide sequence analyses of the MRP 1 gene in four populations suggest negative selection on its coding region

Wang, Zihua, Sew, Pui-Hoon, Ambrose, Helen, Ryan, Stephen, Chong, Samuel S, Lee, Edmund JD, Lee, Caroline GL (December 2006) Nucleotide sequence analyses of the MRP 1 gene in four populations suggest negative selection on its coding region. BMC Genomics, 7 (1). ISSN 1471-2164

DOI: 10.1186/1471-2164-7-111


<jats:title>Abstract</jats:title> <jats:sec> <jats:title>Background</jats:title> <jats:p>The <jats:italic>MRP</jats:italic> 1 gene encodes the 190 kDa multidrug resistance-associated protein 1 (MRP1/ABCC1) and effluxes diverse drugs and xenobiotics. Sequence variations within this gene might account for differences in drug response in different individuals. To facilitate association studies of this gene with diseases and/or drug response, exons and flanking introns of <jats:italic>MRP</jats:italic> 1 were screened for polymorphisms in 142 DNA samples from four different populations.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Seventy-one polymorphisms, including 60 biallelic single nucleotide polymorphisms (SNPs), ten insertions/deletions (indel) and one short tandem repeat (STR) were identified. Thirty-four of these polymorphisms have not been previously reported. Interestingly, the STR polymorphism at the 5' untranslated region (5'UTR) occurs at high but different frequencies in the different populations. Frequencies of common polymorphisms in our populations were comparable to those of similar populations in HAPMAP or Perlegen. Nucleotide diversity indices indicated that the coding region of <jats:italic>MRP</jats:italic> 1 may have undergone negative selection or recent population expansion. SNPs E10/1299 G&gt;T (R433S) and E16/2012 G&gt;T (G671V) which occur at low frequency in only one or two of four populations examined were predicted to be functionally deleterious and hence are likely to be under negative selection.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion</jats:title> <jats:p>Through <jats:italic>in silico</jats:italic> approaches, we identified two rare SNPs that are potentially negatively selected. These SNPs may be useful for studies associating this gene with rare events including adverse drug reactions.</jats:p> </jats:sec>

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > analysis and processing
diseases & disorders > cancer > drugs and therapies
CSHL Authors:
Communities: CSHL labs > Wigler lab
SWORD Depositor: CSHL Elements
Depositing User: CSHL Elements
Date: December 2006
Date Deposited: 11 Jan 2023 19:25
Last Modified: 11 Jan 2023 19:25

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