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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | D'oliveira, C. E. Gorrell, T. E. Müller, M. Johnson, P. J. |
| Description | Author Affiliation: Johnson PJ ( Department of Microbiology and Immunology, University of California School of Medicine, Los Angeles 90024.); |
| Abstract | We have determined the primary structure of the [2Fe-2S]ferredoxin of the anaerobic protist Trichomonas vaginalis. This protein, situated in the hydrogenosome, is composed of 93 amino acids. A comparison of T. vaginalis ferredoxin with greater than 80 other ferredoxins shows the closest similarity to [2Fe-2S]putidaredoxin of the aerobic bacterium Pseudomonas putida and a lesser one to mitochondrial [2Fe-2S]ferredoxins of vertebrates. This similarity is reflected in the overall primary structure and in the spacing of cysteine residues coordinating the iron-sulfur center. The primary structure, but not the environment of the iron-sulfur center, also shows similarity with [2Fe-2S]ferredoxins of photosynthetic organisms and halobacteria. We have cloned and analyzed the T. vaginalis ferredoxin gene. The gene is present in a single copy and devoid of introns. It gives rise to a transcript with unusually short 5' and 3' untranslated regions of 16 and 18 nucleotides, respectively. DNA sequence analysis of the gene predicts an additional 8 amino acids at the amino terminus which are absent from the purified protein. This amino-terminal region of the protein is characterized by properties typical of mitochondrial presequences. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 16 |
| Volume Number | 87 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1990-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Ferredoxins Genetics Trichomonas Vaginalis Amino Acid Sequence Anaerobiosis Animals Blotting, Southern DNA Isolation & Purification Metabolism Gene Library Molecular Sequence Data Protein Conformation RNA Restriction Mapping Sequence Homology, Nucleic Acid Comparative Study Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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