Cloning and sequence characterisation of falcipain-2 from Plasmodium falciparum Gombak A strain (Malaysia)

Parasitol Res. 2001 Sep;87(9):683-6. doi: 10.1007/s004360100444.

Abstract

In this study, the genome of the Plasmodium falciparum Gombak A strain was examined for the presence of a gene encoding falcipain-2, a cysteine protease, using homology-based polymerase chain reaction cloning. The nucleotide sequence obtained from the gene cloned (designated pFG1) is approximately 99% homologous to other falcipain-2 genes from different strains. Comparatively, it is 69% homologous to falcipain-3 genes. Direct cloning of the falcipain-2 gene and its resemblance to the reported corresponding mRNA transcript suggests the absence of introns in this gene. Sequence alignment and comparison revealed four amino acid differences at positions 15, 51, 59 and 414 in the falcipain-2 from P. falciparum Gombak A as compared to other falcipain-2 proteins from different strains.

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Cloning, Molecular*
  • Cysteine Endopeptidases / chemistry
  • Cysteine Endopeptidases / genetics*
  • Cysteine Endopeptidases / metabolism
  • Genes, Protozoan*
  • Molecular Sequence Data
  • Plasmodium falciparum / enzymology*
  • Plasmodium falciparum / genetics
  • Polymerase Chain Reaction
  • Sequence Alignment
  • Sequence Analysis, DNA*

Substances

  • Cysteine Endopeptidases
  • falcipain 2