title: Cloning and characterization of the nuclear gene and cDNAs for triosephosphate isomerase of the marine red alga Gracilaria verrucosa.
abstract: cDNAs and an intronless single-copy nuclear gene (TPI1) encoding triosephosphate isomerase have been cloned and sequenced from the marine red alga Gracilaria verrucosa. The predicted amino-acid sequence of TPI1 is readily alignable with those of other known TPIs; 26 of 27 active-site residues and 19 of 26 intersubunit-contact residues are identical between TPIs of G. verrucosa and/or animals and green plants. A partial cDNA sequence of a second TPI gene (TPI2), presumably encoding plastid-localized TPI, was recovered by PCR and demonstrated by phylogenetic analysis to be red algal; no TP12 cDNA or genomic clones could be recovered. Genomic Southern analysis demonstrated that at least two TPI-like genes are present in the nuclear DNA of G. verrucosa.
authors.affiliation: Institute for Marine Biosciences, National Research Council of Canada, Halifax, Nova Scotia, Canada.
authors.forename: Y H
authors.initials: YH
authors.lastname: Zhou
authors.forename: M A
authors.initials: MA
authors.lastname: Ragan
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D015139:Blotting, Southern; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000235:genetics; D018628:Gene Dosage; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D015183:Restriction Mapping; D000461:Rhodophyta / Q000201:enzymology / Q000235:genetics*; D016415:Sequence Alignment; D014305:Triose-Phosphate Isomerase / Q000737:chemistry / Q000235:genetics*
chemical_list: D018076:DNA, Complementary; D014305:Triose-Phosphate Isomerase