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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">EC-Nummer</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><p>Die <b>EC-Nummern</b> (engl. <i>Enzyme Commission numbers</i>) bilden ein numerisches <a href="Klassifikation" title="Klassifikation">Klassifikation</a>ssystem für <a href="Enzyme" class="mw-redirect" title="Enzyme">Enzyme</a>. Jede EC-Nummer besteht aus vier durch Punkte voneinander getrennten Zahlen. Genaugenommen wird nicht das Enzym selbst, sondern die Reaktion, die es katalysiert, kategorisiert. So kann es vorkommen, dass nicht miteinander verwandte Enzyme, welche die gleiche Reaktion katalysieren, dieselbe EC-Nummer zugewiesen bekommen.
</p>
<table class="wikitable">
<caption>Enzymhauptklassen<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</caption>
<tbody><tr>
<th>Klasse
</th>
<th>Bezeichnung
</th>
<th>Aufgabe
</th>
<th>Beispiele
</th>
<th><a href="Coenzym" class="mw-redirect" title="Coenzym">Coenzyme</a>
</th></tr>
<tr>
<td><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/1.-.-.-">1.-.-.-</a>
</td>
<td><a href="Oxidoreduktasen" title="Oxidoreduktasen">Oxidoreduktasen</a>
</td>
<td>Katalysieren <a href="Redoxreaktion" title="Redoxreaktion">Redoxreaktionen</a>
</td>
<td><a href="Dehydrogenase" class="mw-redirect" title="Dehydrogenase">Dehydrogenasen</a><br><a href="Hydrogenase" title="Hydrogenase">Hydrogenasen</a><br><a href="Oxidase" class="mw-redirect" title="Oxidase">Oxidasen</a><br><a href="Oxygenase" class="mw-redirect" title="Oxygenase">Oxygenasen</a><br><a href="Hydroxylase" class="mw-redirect" title="Hydroxylase">Hydroxylasen</a>
</td>
<td><a href="Nicotinamidadenindinukleotid" title="Nicotinamidadenindinukleotid">NAD<sup>+</sup></a>, <a href="Nicotinamidadenindinukleotidphosphat" title="Nicotinamidadenindinukleotidphosphat">NADP<sup>+</sup></a>, <a href="Flavin-Adenin-Dinukleotid" title="Flavin-Adenin-Dinukleotid">FAD</a>, <a href="Flavinmononukleotid" title="Flavinmononukleotid">FMN</a>, <a href="Lipons%C3%A4ure" title="Liponsäure">Liponsäure</a>
</td></tr>
<tr>
<td><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/2.-.-.-">2.-.-.-</a>
</td>
<td><a href="Transferasen" class="mw-redirect" title="Transferasen">Transferasen</a>
</td>
<td>Katalysieren die Übertragung einer <a href="Funktionelle_Gruppe" title="Funktionelle Gruppe">funktionellen Gruppe</a>
</td>
<td><a href="Acyltransferase" title="Acyltransferase">Acyltransferasen</a> (enthalten <a href="Acetyltransferase" title="Acetyltransferase">Acetyltransferasen</a>)<br><a href="Aminotransferase" class="mw-redirect" title="Aminotransferase">Aminotransferasen</a><br>
<p>Phosphotransferasen (enthalten <a href="Kinasen" class="mw-redirect" title="Kinasen">Kinasen</a>)
</p>
</td>
<td><a href="S-Adenosylmethionin" title="S-Adenosylmethionin">S-Adenosylmethionin</a>, <a href="Biotin" title="Biotin">Biotin</a>, <a href="Cyclisches_Adenosinmonophosphat" title="Cyclisches Adenosinmonophosphat">cAMP</a>, <a href="Adenosintriphosphat" title="Adenosintriphosphat">ATP</a>, <a href="Thiamin-Pyrophosphat" class="mw-redirect" title="Thiamin-Pyrophosphat">Thiamin-Pyrophosphat</a> (TPP), <a href="Tetrahydrofols%C3%A4ure" title="Tetrahydrofolsäure">Tetrahydrofolsäure</a>
</td></tr>
<tr>
<td><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/3.-.-.-">3.-.-.-</a>
</td>
<td><a href="Hydrolasen" title="Hydrolasen">Hydrolasen</a>
</td>
<td>Katalysieren die <a href="Hydrolyse" title="Hydrolyse">hydrolytische</a> Spaltung
</td>
<td><a href="Amylasen" title="Amylasen">Amylasen</a>
<p><a href="Esterase" class="mw-redirect" title="Esterase">Esterasen</a><br><a href="Lipasen" title="Lipasen">Lipasen</a><br><a href="Phosphatase" class="mw-redirect" title="Phosphatase">Phosphatasen</a><br><a href="Peptidase" class="mw-redirect" title="Peptidase">Peptidasen</a>
</p>
</td>
<td>Benötigen keine Coenzyme
</td></tr>
<tr>
<td><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/4.-.-.-">4.-.-.-</a>
</td>
<td><a href="Lyasen" title="Lyasen">Lyasen</a>
</td>
<td>Nicht-hydrolytische Addition oder Eliminierung von Molekülgruppen
</td>
<td><a href="Decarboxylase" class="mw-redirect" title="Decarboxylase">Decarboxylasen</a><br><a href="Aldolase" title="Aldolase">Aldolasen</a><br><a href="Synthasen" title="Synthasen">Synthasen</a>
</td>
<td>TPP, <a href="Pyridoxalphosphat" title="Pyridoxalphosphat">Pyridoxalphosphat</a>
</td></tr>
<tr>
<td><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/5.-.-.-">5.-.-.-</a>
</td>
<td><a href="Isomerasen" title="Isomerasen">Isomerasen</a>
</td>
<td>Katalysieren die intramolekulare Umwandlung, z. B. <a href="Isomerisierung" title="Isomerisierung">Isomerisierung</a>
</td>
<td><a href="Razemase" class="mw-redirect" title="Razemase">Razemasen</a><br><a href="Mutase" class="mw-redirect" title="Mutase">Mutasen</a>
</td>
<td>Glucose-1,6-bisphosphat, <a href="Cobalamin" class="mw-redirect" title="Cobalamin">Cobalamin</a>
</td></tr>
<tr>
<td><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/6.-.-.-">6.-.-.-</a>
</td>
<td><a href="Ligasen" class="mw-redirect" title="Ligasen">Ligasen</a>
</td>
<td>Katalysieren die kovalente Verknüpfung mittels energiereicher Kofaktoren
</td>
<td><a href="Synthetase" title="Synthetase">Synthetasen</a><br><a href="Carboxylase" title="Carboxylase">Carboxylasen</a>
</td>
<td><a href="Adenosintriphosphat" title="Adenosintriphosphat">ATP</a>, <a href="Nicotinamidadenindinukleotid" title="Nicotinamidadenindinukleotid">NAD<sup>+</sup></a>, Biotin
</td></tr>
<tr>
<td><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/7.-.-.-">7.-.-.-</a>
</td>
<td><a href="Translokasen" title="Translokasen">Translokasen</a>
</td>
<td>Katalysieren den Transport von Stoffen an oder durch Zellmembranen
</td>
<td><a href="Ornithin-Translokase" class="mw-redirect" title="Ornithin-Translokase">Ornithin-Translokase</a>
</td>
<td>beim <a href="Aktiver_Transport" class="mw-redirect" title="Aktiver Transport">aktiven Transport</a> oft Adenosintriphosphat (ATP), häufig auch andere Stoffe (siehe <a href="Membrantransport" title="Membrantransport">Membrantransport</a>)
</td></tr></tbody></table>
<div class="mw-heading mw-heading2"><h2 id="Format_der_Klassifizierung">Format der Klassifizierung</h2></div>
<p>Die Klassifizierung wird von links nach rechts fortschreitend immer spezifischer. So setzt sich die EC-Nummer des Enzyms Tripeptid-Aminopeptidase (<a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/3.4.11.4">3.4.11.4</a>) wie folgt zusammen:
</p>
<ul><li><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/3.-.-.-">3.-.-.-</a>: <a href="Hydrolase" class="mw-redirect" title="Hydrolase">Hydrolase</a></li>
<li><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/3.4.-.-">3.4.-.-</a>: <a href="Peptidase" class="mw-redirect" title="Peptidase">Peptidase</a> (<a href="Hydrolyse" title="Hydrolyse">Hydrolyse</a> einer <a href="Peptidbindung" title="Peptidbindung">Peptidbindung</a>)</li>
<li><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/3.4.11.-">3.4.11.-</a>: <a href="Aminopeptidase" class="mw-redirect" title="Aminopeptidase">Aminopeptidase</a></li>
<li><a class="mw-selflink selflink">EC</a> <a rel="nofollow" class="external text" href="https://enzyme.expasy.org/EC/3.4.11.4">3.4.11.4</a>: Tripeptid-Aminopeptidase (katalysiert die Abspaltung einer <a href="N-Terminus" title="N-Terminus">aminoterminalen</a> <a href="Aminos%C3%A4ure" class="mw-redirect" title="Aminosäure">Aminosäure</a> von einem <a href="Tripeptide" title="Tripeptide">Tripeptid</a>)</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span class="cite">G.P. Moss: <a rel="nofollow" class="external text" href="https://www.qmul.ac.uk/sbcs/iubmb/enzyme/"><i>Recommendations of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology on the Nomenclature and Classification of Enzymes by the Reactions they Catalyse.</i></a> <a href="International_Union_of_Biochemistry_and_Molecular_Biology" title="International Union of Biochemistry and Molecular Biology">International Union of Biochemistry and Molecular Biology</a>,<span class="Abrufdatum"> abgerufen am 23. Dezember 2010</span> (englisch).</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2Fde.wikipedia.org%3AEC-Nummer&rft.title=Recommendations+of+the+Nomenclature+Committee+of+the+International+Union+of+Biochemistry+and+Molecular+Biology+on+the+Nomenclature+and+Classification+of+Enzymes+by+the+Reactions+they+Catalyse&rft.description=Recommendations+of+the+Nomenclature+Committee+of+the+International+Union+of+Biochemistry+and+Molecular+Biology+on+the+Nomenclature+and+Classification+of+Enzymes+by+the+Reactions+they+Catalyse&rft.identifier=&rft.creator=G.P.+Moss&rft.publisher=%5B%5BInternational+Union+of+Biochemistry+and+Molecular+Biology%5D%5D&rft.date=&rft.language=en"> </span></span>
</li>
</ol>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li><span class="cite"><a rel="nofollow" class="external text" href="https://www.enzyme-database.org/"><i>ExplorEnz – database of the of the IUBMB Enzyme Nomenclature List.</i></a> Andrew McDonald (School of Biochemistry & Immunology, Trinity College, Dublin 2, Ireland),<span class="Abrufdatum"> abgerufen am 12. Februar 2016</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2Fde.wikipedia.org%3AEC-Nummer&rft.title=ExplorEnz+%E2%80%93+database+of+the+of+the+IUBMB+Enzyme+Nomenclature+List&rft.description=ExplorEnz+%E2%80%93+database+of+the+of+the+IUBMB+Enzyme+Nomenclature+List&rft.identifier=https%3A%2F%2Fwww.enzyme-database.org%2F&rft.publisher=Andrew+McDonald+%28School+of+Biochemistry+%26+Immunology%2C+Trinity+College%2C+Dublin+2%2C+Ireland%29"> </span></li></ul></div><!--htdig_noindex--><div><div class="zim-footer">
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