Abstract
Vibrio anguillarum Fur mutants, 775met9 and 775met11, were characterized. V. anguillarum 775met9 had a change of D to G at position 104 located in the carboxy terminus resulting in impaired Fur activity.Computer analysis predicts perturbation of an alpha-helix in the carboxy terminus which may interfere with Fur protein conformation. Strain 775met11 had a change in the start codon resulting in no protein synthesis. The mutants are unstable, and reversion to the wild type occurs frequently.
Full text
PDF






Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Actis L. A., Potter S. A., Crosa J. H. Iron-regulated outer membrane protein OM2 of Vibrio anguillarum is encoded by virulence plasmid pJM1. J Bacteriol. 1985 Feb;161(2):736–742. doi: 10.1128/jb.161.2.736-742.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bagg A., Neilands J. B. Ferric uptake regulation protein acts as a repressor, employing iron (II) as a cofactor to bind the operator of an iron transport operon in Escherichia coli. Biochemistry. 1987 Aug 25;26(17):5471–5477. doi: 10.1021/bi00391a039. [DOI] [PubMed] [Google Scholar]
- Berish S. A., Subbarao S., Chen C. Y., Trees D. L., Morse S. A. Identification and cloning of a fur homolog from Neisseria gonorrhoeae. Infect Immun. 1993 Nov;61(11):4599–4606. doi: 10.1128/iai.61.11.4599-4606.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 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]
- Bradford M. M. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal Biochem. 1976 May 7;72:248–254. doi: 10.1016/0003-2697(76)90527-3. [DOI] [PubMed] [Google Scholar]
- Brennan R. G. The winged-helix DNA-binding motif: another helix-turn-helix takeoff. Cell. 1993 Sep 10;74(5):773–776. doi: 10.1016/0092-8674(93)90456-z. [DOI] [PubMed] [Google Scholar]
- Calderwood S. B., Mekalanos J. J. Confirmation of the Fur operator site by insertion of a synthetic oligonucleotide into an operon fusion plasmid. J Bacteriol. 1988 Feb;170(2):1015–1017. doi: 10.1128/jb.170.2.1015-1017.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cohen S. N., Chang A. C., Hsu L. Nonchromosomal antibiotic resistance in bacteria: genetic transformation of Escherichia coli by R-factor DNA. Proc Natl Acad Sci U S A. 1972 Aug;69(8):2110–2114. doi: 10.1073/pnas.69.8.2110. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Coy M., Neilands J. B. Structural dynamics and functional domains of the fur protein. Biochemistry. 1991 Aug 20;30(33):8201–8210. doi: 10.1021/bi00247a016. [DOI] [PubMed] [Google Scholar]
- Crosa J. H. A plasmid associated with virulence in the marine fish pathogen Vibrio anguillarum specifies an iron-sequestering system. Nature. 1980 Apr 10;284(5756):566–568. doi: 10.1038/284566a0. [DOI] [PubMed] [Google Scholar]
- Crosa J. H. Genetics and molecular biology of siderophore-mediated iron transport in bacteria. Microbiol Rev. 1989 Dec;53(4):517–530. doi: 10.1128/mr.53.4.517-530.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Crosa J. H., Hodges L. L. Outer membrane proteins induced under conditions of iron limitation in the marine fish pathogen Vibrio anguillarum 775. Infect Immun. 1981 Jan;31(1):223–227. doi: 10.1128/iai.31.1.223-227.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- De Lorenzo V., Herrero M., Giovannini F., Neilands J. B. Fur (ferric uptake regulation) protein and CAP (catabolite-activator protein) modulate transcription of fur gene in Escherichia coli. Eur J Biochem. 1988 May 2;173(3):537–546. doi: 10.1111/j.1432-1033.1988.tb14032.x. [DOI] [PubMed] [Google Scholar]
- Gammie A. E., Tolmasky M. E., Crosa J. H. Functional characterization of a replication initiator protein. J Bacteriol. 1993 Jun;175(11):3563–3569. doi: 10.1128/jb.175.11.3563-3569.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hantke K. Cloning of the repressor protein gene of iron-regulated systems in Escherichia coli K12. Mol Gen Genet. 1984;197(2):337–341. doi: 10.1007/BF00330982. [DOI] [PubMed] [Google Scholar]
- Hantke K. Selection procedure for deregulated iron transport mutants (fur) in Escherichia coli K 12: fur not only affects iron metabolism. Mol Gen Genet. 1987 Nov;210(1):135–139. doi: 10.1007/BF00337769. [DOI] [PubMed] [Google Scholar]
- Litwin C. M., Boyko S. A., Calderwood S. B. Cloning, sequencing, and transcriptional regulation of the Vibrio cholerae fur gene. J Bacteriol. 1992 Mar;174(6):1897–1903. doi: 10.1128/jb.174.6.1897-1903.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Litwin C. M., Calderwood S. B. Cloning and genetic analysis of the Vibrio vulnificus fur gene and construction of a fur mutant by in vivo marker exchange. J Bacteriol. 1993 Feb;175(3):706–715. doi: 10.1128/jb.175.3.706-715.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Presta L. G., Rose G. D. Helix signals in proteins. Science. 1988 Jun 17;240(4859):1632–1641. doi: 10.1126/science.2837824. [DOI] [PubMed] [Google Scholar]
- Prince R. W., Cox C. D., Vasil M. L. Coordinate regulation of siderophore and exotoxin A production: molecular cloning and sequencing of the Pseudomonas aeruginosa fur gene. J Bacteriol. 1993 May;175(9):2589–2598. doi: 10.1128/jb.175.9.2589-2598.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Putnam S. L., Koch A. L. Complications in the simplest cellular enzyme assay: lysis of Escherichia coli for the assay of beta-galactosidase. Anal Biochem. 1975 Feb;63(2):350–360. doi: 10.1016/0003-2697(75)90357-7. [DOI] [PubMed] [Google Scholar]
- Richardson J. S., Richardson D. C. Amino acid preferences for specific locations at the ends of alpha helices. Science. 1988 Jun 17;240(4859):1648–1652. doi: 10.1126/science.3381086. [DOI] [PubMed] [Google Scholar]
- Saito T., Williams R. J. The binding of the ferric uptake regulation protein to a DNA fragment. Eur J Biochem. 1991 Apr 10;197(1):43–47. doi: 10.1111/j.1432-1033.1991.tb15880.x. [DOI] [PubMed] [Google Scholar]
- Salinas P. C., Tolmasky M. E., Crosa J. H. Regulation of the iron uptake system in Vibrio anguillarum: evidence for a cooperative effect between two transcriptional activators. Proc Natl Acad Sci U S A. 1989 May;86(10):3529–3533. doi: 10.1073/pnas.86.10.3529. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Salinas P. C., Waldbeser L. S., Crosa J. H. Regulation of the expression of bacterial iron transport genes: possible role of an antisense RNA as a repressor. Gene. 1993 Jan 15;123(1):33–38. doi: 10.1016/0378-1119(93)90535-b. [DOI] [PubMed] [Google Scholar]
- 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]
- Schäffer S., Hantke K., Braun V. Nucleotide sequence of the iron regulatory gene fur. Mol Gen Genet. 1985;200(1):110–113. doi: 10.1007/BF00383321. [DOI] [PubMed] [Google Scholar]
- Staggs T. M., Perry R. D. Identification and cloning of a fur regulatory gene in Yersinia pestis. J Bacteriol. 1991 Jan;173(2):417–425. doi: 10.1128/jb.173.2.417-425.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Studier F. W., Rosenberg A. H., Dunn J. J., Dubendorff J. W. Use of T7 RNA polymerase to direct expression of cloned genes. Methods Enzymol. 1990;185:60–89. doi: 10.1016/0076-6879(90)85008-c. [DOI] [PubMed] [Google Scholar]
- Tabor S., Richardson C. C. A bacteriophage T7 RNA polymerase/promoter system for controlled exclusive expression of specific genes. Proc Natl Acad Sci U S A. 1985 Feb;82(4):1074–1078. doi: 10.1073/pnas.82.4.1074. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tolmasky M. E., Actis L. A., Crosa J. H. Genetic analysis of the iron uptake region of the Vibrio anguillarum plasmid pJM1: molecular cloning of genetic determinants encoding a novel trans activator of siderophore biosynthesis. J Bacteriol. 1988 Apr;170(4):1913–1919. doi: 10.1128/jb.170.4.1913-1919.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tolmasky M. E., Crosa J. H. Molecular cloning and expression of genetic determinants for the iron uptake system mediated by the Vibrio anguillarum plasmid pJM1. J Bacteriol. 1984 Dec;160(3):860–866. doi: 10.1128/jb.160.3.860-866.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tolmasky M. E., Wertheimer A. M., Actis L. A., Crosa J. H. Characterization of the Vibrio anguillarum fur gene: role in regulation of expression of the FatA outer membrane protein and catechols. J Bacteriol. 1994 Jan;176(1):213–220. doi: 10.1128/jb.176.1.213-220.1994. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Towbin H., Staehelin T., Gordon J. Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets: procedure and some applications. Proc Natl Acad Sci U S A. 1979 Sep;76(9):4350–4354. doi: 10.1073/pnas.76.9.4350. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Vieira J., Messing J. The pUC plasmids, an M13mp7-derived system for insertion mutagenesis and sequencing with synthetic universal primers. Gene. 1982 Oct;19(3):259–268. doi: 10.1016/0378-1119(82)90015-4. [DOI] [PubMed] [Google Scholar]
- Waldbeser L. S., Tolmasky M. E., Actis L. A., Crosa J. H. Mechanisms for negative regulation by iron of the fatA outer membrane protein gene expression in Vibrio anguillarum 775. J Biol Chem. 1993 May 15;268(14):10433–10439. [PubMed] [Google Scholar]
- de Lorenzo V., Wee S., Herrero M., Neilands J. B. Operator sequences of the aerobactin operon of plasmid ColV-K30 binding the ferric uptake regulation (fur) repressor. J Bacteriol. 1987 Jun;169(6):2624–2630. doi: 10.1128/jb.169.6.2624-2630.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]