Methionyl-tRNA synthetase from Escherichia coli. Absence of interaction between the metal ion and the purine ring of ATP in the L-methionine activation site
Enhancement of the nuclear relaxation rates by manganese has been used to derive manganese--purine-ring distances in the activation site of methionyl-tRNA synthetase. This is possible with the help of an abortive complex between the enzyme, methionine, adenosine, pyrophosphate and manganese which si...
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| Veröffentlicht in: | European journal of biochemistry 1978-04, Vol.85 (2), p.419-422 |
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| container_title | European journal of biochemistry |
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| creator | Hyafil, F Bernassau, J M |
| description | Enhancement of the nuclear relaxation rates by manganese has been used to derive manganese--purine-ring distances in the activation site of methionyl-tRNA synthetase. This is possible with the help of an abortive complex between the enzyme, methionine, adenosine, pyrophosphate and manganese which simulates an intermediate species of the activation reaction. It is found that the distances between the manganese ion and the purine ring are too high (greater than 0.8 nm) to allow interaction between them. Thus, metal-purine interaction is involved neither in the catalytic mechanism nor in the stabilization of abortive synergistic complexes [S. Blanquet, G. Fayat and J. P. Waller (1975) J. Mol. Biol. 94, 1-15]. |
| doi_str_mv | 10.1111/j.1432-1033.1978.tb12254.x |
| format | Article |
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Biol. 94, 1-15].</description><subject>Adenosine</subject><subject>Adenosine Triphosphate</subject><subject>Amino Acyl-tRNA Synthetases - metabolism</subject><subject>Binding Sites</subject><subject>Enzyme Activation</subject><subject>Escherichia coli - enzymology</subject><subject>Manganese - pharmacology</subject><subject>Methionine</subject><subject>Methionine-tRNA Ligase - metabolism</subject><subject>Tubercidin</subject><issn>0014-2956</issn><issn>1432-1033</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1978</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kclOwzAQhi3EVgpvwMHiwC3BS1ZuUVUWqSxC5Ww5zoS4ylJsF9p34WFJ2qo-2NL88_1jzY_QDSU-7c_dwqcBZx4lnPs0jRPf5ZSxMPDXR2h0kI7RiBAaeCwNo3N0Ye2CEBKlUXyGTnmQBDEdob8XcJXu2k3tuY_XDNtN6ypw0gIuTdfgqVUVGK0qLbHqau3jLLfQKsBdiXXrwEjleh7n4H4BWtzTuOkNajxUZVtsK8uV0S3g_voawGz-3sNbZeY1ux8M-uD1I7d-Vju4RCelrC1c7d8x-nyYzidP3uzt8XmSzTxFY-o8pUIpoyJSEAGJ84CXECrGcsYlCQuAnESJpIQokkIRhDzhClgSl3lEU6WSko_R7c53abrvFVgnGm0V1LVsoVtZEfM0DGLG-8b7XaMynbUGSrE0upFmIygRQzJiIYb1i2H9YkhG7JMR6x6-3k9Z5Q0UB3QXBf8H_6aOUA</recordid><startdate>19780417</startdate><enddate>19780417</enddate><creator>Hyafil, F</creator><creator>Bernassau, J M</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19780417</creationdate><title>Methionyl-tRNA synthetase from Escherichia coli. 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| ispartof | European journal of biochemistry, 1978-04, Vol.85 (2), p.419-422 |
| issn | 0014-2956 1432-1033 |
| language | eng |
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| source | MEDLINE; Alma/SFX Local Collection |
| subjects | Adenosine Adenosine Triphosphate Amino Acyl-tRNA Synthetases - metabolism Binding Sites Enzyme Activation Escherichia coli - enzymology Manganese - pharmacology Methionine Methionine-tRNA Ligase - metabolism Tubercidin |
| title | Methionyl-tRNA synthetase from Escherichia coli. Absence of interaction between the metal ion and the purine ring of ATP in the L-methionine activation site |
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