5 research outputs found

    Frequency of <i>CDH13</i> variant alleles identified in Norwegian adult patient and control groups.

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    <p>Seven <i>CDH13</i> variants were identified in the sequencing study, three of which were only detected in patients. All variants were genotyped in a larger sample. Two-tailed P-values for genotype frequencies were calculated by Fisher’s exact test in a 2×2 contingency table.</p

    <i>In silico</i> analysis of the effect of CDH13 variants.

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    <p>The analysis was based on the protein sequence. SIFT scores below 0.05 were considered damaging. I-mutant-3.0 predicted the effects of the variants on protein stability by calculating the unfolding Gibbs free energy value of the mutant proteins minus that of the wild type protein (ΔΔG = ΔG mutant – ΔG wild type), given in kcal/mol. A negative change indicates decreased stability. The reliability index (RI) for a large decrease (ΔΔG<−0.5) ranged from 0–10. For the G113R* a reliability index for a neutral stability change was given. Ternary classification (SVM3) −0.5< = ΔΔG< = 0.5 corresponds to neutral stability, ΔΔG<−0.5 to large decrease of stability and ΔΔG >0.5 to a large increase of stability.</p

    Schematic description of the CDH13 proteins expressed in CHO and HEK293 cells.

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    <p>CDH13 was expressed with or without a C-terminal tGFP tag in HEK293 and CHO cells, respectively. The location of the identified variants is also shown (A). According to the general model of processing of GPI anchored proteins in the ER, a C-terminal transmembrane domain is cleaved off and is then replaced by a GPI anchor. The protein with the attached GPI anchor is then directed to the external side of the plasma membrane (B). Wild type and variant CDH13 proteins were expressed on the cell membrane in HEK293 and CHO cells. In HEK293 cells, the C-terminal GFP tag of the GFP-CDH13 fusion proteins was cleaved off as a result of GPI anchoring at the c- terminal of CDH13 and the fully processed protein was subsequently transferred to the cell membrane.</p
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