An oligonucleotide mixture corresponding to the codons for conserved and repeated amino acid sequences of bacterial sialidases (Roggentin et al. 1989) was used to clone a 4.3 kb PstI restriction fragment of Clostridium septicum DNA in Escherichia coli. The complete nucleotide sequence of the sialida
Sequence and expression of the gene for N10-formyltetrahydrofolate synthetase from Clostridium cylindrosporum
β Scribed by Carolyn A. Rankin; Gale C. Haslam; Richard H. Himes
- Publisher
- Cold Spring Harbor Laboratory Press
- Year
- 2008
- Tongue
- English
- Weight
- 798 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0961-8368
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β¦ Synopsis
Abstract
Sau3 A and Hind III restriction fragments of Clostridium cylindrosporum genomic DNA were used to isolate clones containing 80% of the N^10^βH~4~folate synthetase gene in a 5β² fragment and the remaining 20% of the gene in the 3β² 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 N^10^βH~4~folate synthetase portion of eukaryotic ClβH~4~folate synthases may represent consensus sequences for nucleotide and H~4~folate binding.
π SIMILAR VOLUMES
The entire structural gene for tyrocidine synthetase 1 from Bacillus brevis ATCC 8185 has been cloned and expressed in Escherichia coli. Transformed E. coli cells were screened for their ability to produce tyrocidine synthetase 1 by in situ immunoassay using antibodies against gramicidin S synthetas