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Rusconi F, Schmitter JM, Rossier J, le Maire M. Chromatographic Separation and Sample Preparation in One Step for MALDI Mass Spectrometric Analysis of Subpicomole Amounts of Heterogeneous Protein Samples. Anal Chem 1998. [DOI: 10.1021/ac9801364] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Filippo Rusconi
- Laboratoire de Neurobiologie, Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris, CNRS UMR 7637, 10 rue Vauquelin, F-75231 Paris Cedex 05, France, Laboratoire de Physico- et Toxico-Chimie, UPRES A5472 CNRS, Université Bordeaux I, F-33405 Talence Cedex, France, and Section de Biophysique des Protéines et des Membranes, Département de Biologie Cellulaire et Moléculaire, CEA et CNRS URA 2096, Centre d'Etudes de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - Jean-Marie Schmitter
- Laboratoire de Neurobiologie, Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris, CNRS UMR 7637, 10 rue Vauquelin, F-75231 Paris Cedex 05, France, Laboratoire de Physico- et Toxico-Chimie, UPRES A5472 CNRS, Université Bordeaux I, F-33405 Talence Cedex, France, and Section de Biophysique des Protéines et des Membranes, Département de Biologie Cellulaire et Moléculaire, CEA et CNRS URA 2096, Centre d'Etudes de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - Jean Rossier
- Laboratoire de Neurobiologie, Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris, CNRS UMR 7637, 10 rue Vauquelin, F-75231 Paris Cedex 05, France, Laboratoire de Physico- et Toxico-Chimie, UPRES A5472 CNRS, Université Bordeaux I, F-33405 Talence Cedex, France, and Section de Biophysique des Protéines et des Membranes, Département de Biologie Cellulaire et Moléculaire, CEA et CNRS URA 2096, Centre d'Etudes de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - Marc le Maire
- Laboratoire de Neurobiologie, Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris, CNRS UMR 7637, 10 rue Vauquelin, F-75231 Paris Cedex 05, France, Laboratoire de Physico- et Toxico-Chimie, UPRES A5472 CNRS, Université Bordeaux I, F-33405 Talence Cedex, France, and Section de Biophysique des Protéines et des Membranes, Département de Biologie Cellulaire et Moléculaire, CEA et CNRS URA 2096, Centre d'Etudes de Saclay, F-91191 Gif-sur-Yvette Cedex, France
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Samyn B, Berks BC, Page MD, Ferguson SJ, van Beeumen JJ. Characterisation and amino acid sequence of cytochrome c-550 from Thiosphaera pantotropha. EUROPEAN JOURNAL OF BIOCHEMISTRY 1994; 219:585-94. [PMID: 7508392 DOI: 10.1111/j.1432-1033.1994.tb19974.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A cytochrome c-550, with mid-point potential +265 mV, has been purified from Thiosphaera pantotropha. The cytochrome was recognised by antibodies to Paracoccus denitrificans cytochrome c-550, but the two proteins were not immunologically identical. Amino acid sequencing of the cytochrome c-550 showed 85.9% and 95.5% identities, respectively, with the cytochromes c-550 of P. denitrificans and Thiobacillus versutus; these are amongst the highest values reported for similarities between class I c-type cytochromes of the c2 group. These similarities are consistent with the published values of 85% for the overall DNA similarity of P. denitrificans and T. pantotropha, but contrast with published 16S rRNA analyses which indicate identity between T. pantotropha and P. denitrificans and 97.5% similarity of T. versutus with these two organisms. Analysis by plasma-desorption mass spectrometry of the peptide containing the haem-binding motif isolated from the apocytochrome has shown that an Hg atom binds to one or both of the two thiol groups.
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Affiliation(s)
- B Samyn
- Department of Biochemistry, Physiology and Microbiology, University of Ghent, Belgium
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Le Marechal P, Hoang BM, Schmitter JM, Van Dorsselaer A, Decottignies P. Purification, properties and primary structure of thioredoxin from Aspergillus nidulans. EUROPEAN JOURNAL OF BIOCHEMISTRY 1992; 210:421-9. [PMID: 1459127 DOI: 10.1111/j.1432-1033.1992.tb17437.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This paper reports the purification and the properties of a thioredoxin from the fungus Aspergillus nidulans. This thioredoxin is an acidic protein which exhibits an unusual fluorescence emission spectrum, characterized by a high contribution of tyrosine residues. Thioredoxin from A. nidulans cannot serve as a substrate for Escherichia coli thioredoxin reductase. Corn NADP-malate dehydrogenase is activated by this thioredoxin in the presence of dithiothreitol, while fructose-1,6-bisphosphatase is not. The amino acid sequence of Aspergillus thioredoxin was determined by automated Edman degradation after cleavage with trypsin, SV8 protease, chymotrypsin and cyanogen bromide. The masses of tryptic peptides were verified by plasma-desorption mass spectrometry. The mass of the protein was determined by electrospray mass spectrometry and shown to be in agreement with the calculated mass derived from the sequence (M(r) = 11,564). Compared to thioredoxins from other sources, the protein from A. nidulans displays a maximal sequence similarity with that from yeast (45%).
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Affiliation(s)
- P Le Marechal
- Laboratoire de Physiologie Végétale Moléculaire, Université Paris-Sud, Orsay, France
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