The present study was designed to investigate the molecular determinants underlying the ability of acacetin to block hKv1.5 channels (coding IKur) in human atrial myocytes using the whole-cell patch voltage-clamp technique to record membrane current in HEK 293 cells stably expressing the hKv1.5 gene or transiently expressing mutant hKv1.5 genes generated by site-directed mutagenesis.
Intermediate situations in which two mutant genes may generate a 'synthetic sickness' condition might also exist.
Mutations have been identified in many cases that alter cell morphology, indicating that there must be a genetic input to maintaining shape; but one could argue that these mutations may affect the maintenance of accurate copying of the morphology rather than an active role of the mutant genes in generating the morphology in the first place.
A stably transfected cell line expressing this mutant gene was generated by transfecting 2.4 × 10 HEK293 cells in a 6-well plate using FuGeneHD Reagent (QIAGEN, Hilden, Germany) according to the manufacturer's instructions.
But even a pinch of the hybrid molecule allowed the mutant gene to generate the full-length RNA template, with all exons accounted for.
They can serve as starting points for identifying candidate genes, generating mutants and analysing gene function, with the aim of identifying genes whose manipulation would enhance plant biomass and/or other important traits.
Proteins HemB and HemH, identified in CPAC 7 (Table 1), catalyze two important steps in heme synthesis and are essential for the Bradyrhizobium/soybean symbiosis, since mutants defective in these genes generate a microaerobic condition with poorly developed nodules that are inefficient in fixing N2[ 48, 50].
We obtained a publicly available mutant line in the tert gene generated by ENU mutagenesis at the Sanger Institute (hu3430).
Mutant gene libraries were generated by error-prone polymerase chain reaction (PCR), using Taq polymerase with unbalanced dNTPs or Mutazyme™, followed by recombination of the PCR products by DNA shuffling.
FNDI mice that were heterozygous for mutant gene (Cys98stop) were generated previously.
