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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Komplementrezeptor 2</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"><table class="wikitable hintergrundfarbe-basis infobox float-right" id="Vorlage_Infobox_Protein_Complement_receptor_type_2" style="font-size:90%; margin-top:0; width:350px;" summary="Infobox Protein">
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<th colspan="3" style="background:#90EE90; color:#202122;">Complement receptor type 2
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<td colspan="3" class="hintergrundfarbe1" style="text-align:center; font-size:smaller; font-weight:bold;">nach <a href="Protein_Data_Bank" title="Protein Data Bank">PDB</a> <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/1GHQ">1GHQ</a>
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<td>Andere Namen
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<p>Complement C3d receptor, CD21, Epstein-Barr virus receptor, EBV receptor
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<p>Vorhandene Strukturdaten: <a href="Protein_Data_Bank" title="Protein Data Bank">PDB</a> <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/1LY2">1LY2</a>, <a href="Protein_Data_Bank" title="Protein Data Bank">PDB</a> <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/1W2R">1W2R</a>
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<th colspan="3" style="background:#90EE90; color:#202122;;">Eigenschaften des menschlichen Proteins
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<td><a href="Molare_Masse" title="Molare Masse">Masse</a>/Länge <a href="Prim%C3%A4rstruktur" title="Primärstruktur">Primärstruktur</a>
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<td colspan="2" style="text-align:center;">1.033 <a href="Aminos%C3%A4uren" title="Aminosäuren">Aminosäuren</a>, 112.916 <a href="Atomare_Masseneinheit" title="Atomare Masseneinheit">Da</a>
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<th colspan="3" style="background:#90EE90; color:#202122;">Bezeichner
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<td>Externe IDs
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<ul><li><a href="GeneCards" title="GeneCards">GeneCards</a>: <a rel="nofollow" class="external text" href="http://www.genecards.org/cgi-bin/carddisp.pl?gene=CR2">CR2</a></li>
<li><a href="UniProt" title="UniProt">UniProt</a> <a rel="nofollow" class="external text" href="https://www.uniprot.org/uniprotkb/P20023">P20023</a></li></ul>
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<th colspan="3" style="background:#90EE90; color:#202122;">Vorkommen
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<td style="background:#C3FDB8; color:#202122;">Homologie-Familie
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<td colspan="2" style="text-align:center;"><a rel="nofollow" class="external text" href="http://hogenom.univ-lyon1.fr/query_sequence?seq=P20023">Hovergen</a>
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</p><p><b>Komplementrezeptor 2</b> (synonym <i>CD21</i>) ist ein <a href="Oberfl%C3%A4chenprotein" class="mw-redirect" title="Oberflächenprotein">Oberflächenprotein</a>.
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<div class="mw-heading mw-heading2"><h2 id="Eigenschaften">Eigenschaften</h2></div>
<p>CD21 ist der <a href="Rezeptor_(Biochemie)" title="Rezeptor (Biochemie)">Rezeptor</a> von C3Dd im <a href="Komplementsystem" title="Komplementsystem">Komplementsystem</a>. Es ist beteiligt am Transport von <a href="Immunkomplex" class="mw-redirect" title="Immunkomplex">Immunkomplexen</a>.<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> CD21 wird von <a href="B-Lymphozyt" title="B-Lymphozyt">B-Lymphozyten</a>, <a href="T-Lymphozyt" title="T-Lymphozyt">T-Lymphozyten</a>, pharyngealen <a href="Epithelzellen" class="mw-redirect" title="Epithelzellen">Epithelzellen</a>, <a href="Astrozyt" title="Astrozyt">Astrozyten</a> und <a href="Dendritische_Zellen" class="mw-redirect" title="Dendritische Zellen">follikuläre dendritische Zellen</a> der <a href="Milz" title="Milz">Milz</a> gebildet. Das <a href="Epstein-Barr-Virus" title="Epstein-Barr-Virus">Epstein-Barr-Virus</a> verwendet den Komplementrezeptor 2 für den Zelleintritt. CD21 ist <a href="Glykosyliert" class="mw-redirect" title="Glykosyliert">glykosyliert</a>.
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<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li><a href="Medical_Subject_Headings" title="Medical Subject Headings">MeSH</a> <i><a rel="nofollow" class="external text" href="https://meshb.nlm.nih.gov/search?searchMethod=FullWord&searchInField=termDescriptor&sort=&size=20&searchType=exactMatch&q=Complement+receptor+type+2">Komplementrezeptor 2</a></i></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">A. C. Jacobson, J. H. Weis: <i>Comparative functional evolution of human and mouse CR1 and CR2.</i> In: <i>Journal of Immunology.</i> Band 181, Nummer 5, September 2008, S. 2953–2959, <a class="external mw-magiclink-pmid" rel="nofollow" href="https://www.ncbi.nlm.nih.gov/pubmed/18713965?dopt=Abstract">PMID 18713965</a>, <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3366432/">PMC 3366432</a> (freier Volltext).</span>
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Dieser Artikel wurde von <a class="external text" title="Zuletzt bearbeitet am 2025-05-19" href="https://de.wikipedia.org/wiki/?title=Komplementrezeptor_2&oldid=256134285">Wikipedia</a> herausgegeben. Der Text ist unter <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.de">Creative Commons Attribution-Share Alike 4.0</a> verfügbar, sofern nicht anders angegeben. Für die Mediendateien können zusätzliche Bedingungen gelten.
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