'''[[RNK]]-[[egzonukleaza]] 4''' je [[enzim]] koji je kod [[ljudi]] [[kodon|kodiran]] [[gen]]om '''REXO4'''.<ref name="pmid9325058">{{cite journal | vauthors = Kwiatkowska J, Slomski R, Jozwiak S, Short MP, Kwiatkowski DJ | title = Human XPMC2H: cDNA cloning, mapping to 9q34, genomic structure, and evaluation as TSC1 | journal = Genomics | volume = 44 | issue = 3 | pages = 350–4 |date=Nov 1997 | pmid = 9325058 | doi = 10.1006/geno.1997.4874 }}</ref><ref name="entrez">{{cite web | title = Entrez Gene: REXO4 REX4, RNA exonuclease 4 homolog (S. cerevisiae)| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=57109}}</ref>
==Aminokiselinska sekvenca==
Dužina [[polipeptid]]nog lanca je  422 [[aminokiseline]], а [[molekularna masa|molekulska težina]]  46.672 [[dalton (jedinica)|Da]].<ref name="UniProt">{{cite web|url=http://www.uniprot.org/uniprot/Q9GZR2#sequences |title=UniProt, Q9GZR2 |access-date=11. 9. 2021}}</ref>
{{legenda aminokiselina}}
<table  style="font-family:monospace;">
<tr style="text-align:right;"><th>10</th><th></th><th>20</th><th></th><th>30</th><th></th><th>40</th><th></th><th>50</th></tr>
<tr style="background-color: #eee;"><td>MGKAKVPASK</td><td style="background-color: #f9f9f9;"></td><td>RAPSSPVAKP</td><td style="background-color: #f9f9f9;"></td><td>GPVKTLTRKK</td><td style="background-color: #f9f9f9;"></td><td>NKKKKRFWKS</td><td style="background-color: #f9f9f9;"></td><td>KAREVSKKPA</td></tr>
<tr style="background-color: #eee;"><td>SGPGAVVRPP</td><td style="background-color: #f9f9f9;"></td><td>KAPEDFSQNW</td><td style="background-color: #f9f9f9;"></td><td>KALQEWLLKQ</td><td style="background-color: #f9f9f9;"></td><td>KSQAPEKPLV</td><td style="background-color: #f9f9f9;"></td><td>ISQMGSKKKP</td></tr>
<tr style="background-color: #eee;"><td>KIIQQNKKET</td><td style="background-color: #f9f9f9;"></td><td>SPQVKGEEMP</td><td style="background-color: #f9f9f9;"></td><td>AGKDQEASRG</td><td style="background-color: #f9f9f9;"></td><td>SVPSGSKMDR</td><td style="background-color: #f9f9f9;"></td><td>RAPVPRTKAS</td></tr>
<tr style="background-color: #eee;"><td>GTEHNKKGTK</td><td style="background-color: #f9f9f9;"></td><td>ERTNGDIVPE</td><td style="background-color: #f9f9f9;"></td><td>RGDIEHKKRK</td><td style="background-color: #f9f9f9;"></td><td>AKEAAPAPPT</td><td style="background-color: #f9f9f9;"></td><td>EEDIWFDDVD</td></tr>
<tr style="background-color: #eee;"><td>PADIEAAIGP</td><td style="background-color: #f9f9f9;"></td><td>EAAKIARKQL</td><td style="background-color: #f9f9f9;"></td><td>GQSEGSVSLS</td><td style="background-color: #f9f9f9;"></td><td>LVKEQAFGGL</td><td style="background-color: #f9f9f9;"></td><td>TRALALDCEM</td></tr>
<tr style="background-color: #eee;"><td>VGVGPKGEES</td><td style="background-color: #f9f9f9;"></td><td>MAARVSIVNQ</td><td style="background-color: #f9f9f9;"></td><td>YGKCVYDKYV</td><td style="background-color: #f9f9f9;"></td><td>KPTEPVTDYR</td><td style="background-color: #f9f9f9;"></td><td>TAVSGIRPEN</td></tr>
<tr style="background-color: #eee;"><td>LKQGEELEVV</td><td style="background-color: #f9f9f9;"></td><td>QKEVAEMLKG</td><td style="background-color: #f9f9f9;"></td><td>RILVGHALHN</td><td style="background-color: #f9f9f9;"></td><td>DLKVLFLDHP</td><td style="background-color: #f9f9f9;"></td><td>KKKIRDTQKY</td></tr>
<tr style="background-color: #eee;"><td>KPFKSQVKSG</td><td style="background-color: #f9f9f9;"></td><td>RPSLRLLSEK</td><td style="background-color: #f9f9f9;"></td><td>ILGLQVQQAE</td><td style="background-color: #f9f9f9;"></td><td>HCSIQDAQAA</td><td style="background-color: #f9f9f9;"></td><td>MRLYVMVKKE</td></tr>
<tr style="background-color: #eee;"><td>WESMARDRRP</td><td style="background-color: #f9f9f9;"></td><td>LLTAPDHCSD</td><td style="background-color: #f9f9f9;"></td><td>DA</td></tr>
</table>