Isolation, characterization and mutation analysis of PEX13-defective Chinese hamster ovary cell mutants

Ryusuke Toyama, Satoru Mukai, Atsushi Itagaki, Shigehiko Tamura, Nobuyuki Shimozawa, Yasuyuki Suzuki, Naomi Kondo, Ronald J.A. Wanders, Yukio Fujiki

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35 Citations (Scopus)


We isolated peroxisome biogenesis mutants ZP128 and ZP150 from rat PEX2-transformed Chinese hamster ovary (CHO) cells, by the 9-(1'-pyrene)nonanol/ultraviolet method. The mutants lacked morphologically recognizable peroxisomes and showed a typical peroxisome assembly-defective phenotype such as a high sensitivity to 12-(1'-pyrene)dodecanoic acid/UV treatment. By means of PEX cDNA transfection and cell fusion, ZP128 and ZP150 were found to belong to a recently identified complementation group H. Expression of human PEX13 cDNA restored peroxisome assembly in ZP128 and ZP150. CHO cell PEX13 was isolated; its deduced sequence comprises 405 amino acids with 93% identity to human Pex13p. Mutation in PEX13 of mutant ZP150 was determined by RT-PCR: G to A transition resulted in one amino acid substitution, Ser319Asn, in one allele and truncation of a 42 amino acid sequence from Asp265 to Lys306 in another allele. Therefore, ZP128 and ZP150 are CHO cell lines with a phenotype of impaired PEX13.

Original languageEnglish
Pages (from-to)1673-1681
Number of pages9
JournalHuman molecular genetics
Issue number9
Publication statusPublished - 1999

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics
  • Genetics(clinical)


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