title: Sequence and expression of the gene for N10-formyltetrahydrofolate synthetase from Clostridium cylindrosporum.
abstract: Sau3 A and Hind III restriction fragments of Clostridium cylindrosporum genomic DNA were used to isolate clones containing 80% of the N10-H4folate synthetase gene in a 5' fragment and the remaining 20% of the gene in the 3' fragment. These fragments were joined at a common SnaB I restriction site and expressed in Escherichia coli at a level equivalent to what is normally found in C. cylindrosporum. Sequence comparisons show a large degree of homology with genes from two other clostridial species, including a thermophile. Certain conserved sequences found in the three clostridial proteins and in the N10-H4folate synthetase portion of eukaryotic C1-H4folate synthases may represent consensus sequences for nucleotide and H4folate binding.
authors.affiliation: Department of Biochemistry, University of Kansas, Lawrence 66045-2106.
authors.forename: C A
authors.initials: CA
authors.lastname: Rankin
authors.forename: G C
authors.initials: GC
authors.lastname: Haslam
authors.forename: R H
authors.initials: RH
authors.lastname: Himes
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D003013:Clostridium / Q000201:enzymology / Q000235:genetics*; D004795:Enzyme Stability / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics; D005574:Formate-Tetrahydrofolate Ligase / Q000096:biosynthesis / Q000235:genetics*; D015723:Gene Library; D005798:Genes, Bacterial / Q000235:genetics*; D005815:Genetic Code; D008969:Molecular Sequence Data; D017433:Protein Structure, Secondary; D017421:Sequence Analysis; D017386:Sequence Homology, Amino Acid
chemical_list: D005574:Formate-Tetrahydrofolate Ligase