Skip to main content
NCBI home page
Nucleic Acids Research logoLink to Nucleic Acids Research
. 1986 Dec 9;14(23):9371–9380. doi: 10.1093/nar/14.23.9371

Cloning, expression and sequencing the molybdenum-pterin binding protein (mop) gene of Clostridium pasteurianum in Escherichia coli.

S M Hinton, G Freyer
PMCID: PMC311964  PMID: 3540853

Abstract

mop is the structural gene for the molybdenum-pterin binding protein, which is the major molybdenum binding protein in Clostridium pastuerianum. The mop gene was detected by immunoscreening genomic libraries of C. pastuerianum and identified by determining the nucleotide sequence of the cloned insert of clostridial DNA. The deduced amino acid sequence of an open reading frame proved to be identical to the first twelve residues of purified Mop. The DNA sequence flanking the mop gene contains promoter-like consensus sequences which are probably responsible for the expression of Mop in Escherichia coli. The deduced amino acid composition shows that the protein is hydrophobic, lacks aromatic and cysteine residues and has a calculated molecular weight of 7,038. The N-terminal amino acid sequence of Mop has sequence homology with DNA binding proteins. The pattern and type of residues in the N-terminal region suggest it forms the helix-turn-helix structure observed in DNA binding proteins. We propose that Mop may be a regulatory protein binding the anabolic source of molybdenum.

Full text

PDF
9371

Images in this article

9375Image
on p.9375

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Biggin M. D., Gibson T. J., Hong G. F. Buffer gradient gels and 35S label as an aid to rapid DNA sequence determination. Proc Natl Acad Sci U S A. 1983 Jul;80(13):3963–3965. doi: 10.1073/pnas.80.13.3963. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Birnboim H. C., Doly J. A rapid alkaline extraction procedure for screening recombinant plasmid DNA. Nucleic Acids Res. 1979 Nov 24;7(6):1513–1523. doi: 10.1093/nar/7.6.1513. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Chou P. Y., Fasman G. D. Prediction of the secondary structure of proteins from their amino acid sequence. Adv Enzymol Relat Areas Mol Biol. 1978;47:45–148. doi: 10.1002/9780470122921.ch2. [DOI] [PubMed] [Google Scholar]
  4. Guo L. H., Yang R. C., Wu R. An improved strategy for rapid direct sequencing of both strands of long DNA molecules cloned in a plasmid. Nucleic Acids Res. 1983 Aug 25;11(16):5521–5540. doi: 10.1093/nar/11.16.5521. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Hanahan D. Studies on transformation of Escherichia coli with plasmids. J Mol Biol. 1983 Jun 5;166(4):557–580. doi: 10.1016/s0022-2836(83)80284-8. [DOI] [PubMed] [Google Scholar]
  6. Helfman D. M., Feramisco J. R., Fiddes J. C., Thomas G. P., Hughes S. H. Identification of clones that encode chicken tropomyosin by direct immunological screening of a cDNA expression library. Proc Natl Acad Sci U S A. 1983 Jan;80(1):31–35. doi: 10.1073/pnas.80.1.31. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Hinton S. M., Merritt B. Purification and characterization of a molybdenum-pterin-binding protein (Mop) in Clostridium pasteurianum W5. J Bacteriol. 1986 Nov;168(2):688–693. doi: 10.1128/jb.168.2.688-693.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Hinton S. M., Mortenson L. E. Anaerobic multiphasic gel electrophoresis of the molybdoproteins in extracts of Clostridium pasteurianum. Anal Biochem. 1985 Mar;145(2):222–229. doi: 10.1016/0003-2697(85)90353-7. [DOI] [PubMed] [Google Scholar]
  9. Hinton S. M., Mortenson L. E. Regulation and order of involvement of molybdoproteins during synthesis of molybdoenzymes in Clostridium pasteurianum. J Bacteriol. 1985 May;162(2):485–493. doi: 10.1128/jb.162.2.485-493.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Johnson J. L., Hainline B. E., Rajagopalan K. V. Characterization of the molybdenum cofactor of sulfite oxidase, xanthine, oxidase, and nitrate reductase. Identification of a pteridine as a structural component. J Biol Chem. 1980 Mar 10;255(5):1783–1786. [PubMed] [Google Scholar]
  11. Laemmli U. K. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature. 1970 Aug 15;227(5259):680–685. doi: 10.1038/227680a0. [DOI] [PubMed] [Google Scholar]
  12. Messing J., Vieira J. A new pair of M13 vectors for selecting either DNA strand of double-digest restriction fragments. Gene. 1982 Oct;19(3):269–276. doi: 10.1016/0378-1119(82)90016-6. [DOI] [PubMed] [Google Scholar]
  13. Meyer T. F., Mlawer N., So M. Pilus expression in Neisseria gonorrhoeae involves chromosomal rearrangement. Cell. 1982 Aug;30(1):45–52. doi: 10.1016/0092-8674(82)90010-1. [DOI] [PubMed] [Google Scholar]
  14. Rosenberg M., Court D. Regulatory sequences involved in the promotion and termination of RNA transcription. Annu Rev Genet. 1979;13:319–353. doi: 10.1146/annurev.ge.13.120179.001535. [DOI] [PubMed] [Google Scholar]
  15. Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Sauer R. T., Yocum R. R., Doolittle R. F., Lewis M., Pabo C. O. Homology among DNA-binding proteins suggests use of a conserved super-secondary structure. Nature. 1982 Jul 29;298(5873):447–451. doi: 10.1038/298447a0. [DOI] [PubMed] [Google Scholar]
  17. Shaw D. J., Rice D. W., Guest J. R. Homology between CAP and Fnr, a regulator of anaerobic respiration in Escherichia coli. J Mol Biol. 1983 May 15;166(2):241–247. doi: 10.1016/s0022-2836(83)80011-4. [DOI] [PubMed] [Google Scholar]

Articles from Nucleic Acids Research are provided here courtesy of Oxford University Press

RESOURCES