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| | ==Crystal structure of the human Endoplasmic Reticulum Aminopeptidase 2 in complex with PHOSPHINIC PSEUDOTRIPEPTIDE inhibitor.== | | ==Crystal structure of the human Endoplasmic Reticulum Aminopeptidase 2 in complex with PHOSPHINIC PSEUDOTRIPEPTIDE inhibitor.== |
| - | <StructureSection load='4jbs' size='340' side='right' caption='[[4jbs]], [[Resolution|resolution]] 2.79Å' scene=''> | + | <StructureSection load='4jbs' size='340' side='right'caption='[[4jbs]], [[Resolution|resolution]] 2.79Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4jbs]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JBS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4JBS FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4jbs]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JBS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4JBS FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IMD:IMIDAZOLE'>IMD</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=P52:NALPHA-[(2S)-2-{[[(1R)-1-AMINO-3-PHENYLPROPYL](HYDROXY)PHOSPHORYL]METHYL}-4-METHYLPENTANOYL]-L-TRYPTOPHANAMIDE'>P52</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.789Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4e36|4e36]], [[3se6|3se6]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IMD:IMIDAZOLE'>IMD</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=P52:NALPHA-[(2S)-2-{[[(1R)-1-AMINO-3-PHENYLPROPYL](HYDROXY)PHOSPHORYL]METHYL}-4-METHYLPENTANOYL]-L-TRYPTOPHANAMIDE'>P52</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ERAP2, LRAP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4jbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jbs OCA], [https://pdbe.org/4jbs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4jbs RCSB], [https://www.ebi.ac.uk/pdbsum/4jbs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4jbs ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4jbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jbs OCA], [http://pdbe.org/4jbs PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4jbs RCSB], [http://www.ebi.ac.uk/pdbsum/4jbs PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4jbs ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/ERAP2_HUMAN ERAP2_HUMAN]] Aminopeptidase that plays a central role in peptide trimming, a step required for the generation of most HLA class I-binding peptides. Peptide trimming is essential to customize longer precursor peptides to fit them to the correct length required for presentation on MHC class I molecules. Preferentially hydrolyzes the basic residues Arg and Lys.<ref>PMID:12799365</ref> <ref>PMID:15908954</ref> <ref>PMID:16286653</ref> | + | [https://www.uniprot.org/uniprot/ERAP2_HUMAN ERAP2_HUMAN] Aminopeptidase that plays a central role in peptide trimming, a step required for the generation of most HLA class I-binding peptides. Peptide trimming is essential to customize longer precursor peptides to fit them to the correct length required for presentation on MHC class I molecules. Preferentially hydrolyzes the basic residues Arg and Lys.<ref>PMID:12799365</ref> <ref>PMID:15908954</ref> <ref>PMID:16286653</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4jbs" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4jbs" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Aminopeptidase 3D structures|Aminopeptidase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Birtley, J]] | + | [[Category: Large Structures]] |
| - | [[Category: Mavridis, I M]] | + | [[Category: Birtley J]] |
| - | [[Category: Saridakis, E]] | + | [[Category: Mavridis IM]] |
| - | [[Category: Stratikos, E]] | + | [[Category: Saridakis E]] |
| - | [[Category: Aminopeptidase]] | + | [[Category: Stratikos E]] |
| - | [[Category: Endoplasmic reticulum]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Hydrolase-hydrolase inhibitor complex]]
| + | |
| - | [[Category: Thermolysin-like catalytic domain]]
| + | |
| - | [[Category: Zinc binding]]
| + | |
| Structural highlights
4jbs is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 2.789Å |
| Ligands: | , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
ERAP2_HUMAN Aminopeptidase that plays a central role in peptide trimming, a step required for the generation of most HLA class I-binding peptides. Peptide trimming is essential to customize longer precursor peptides to fit them to the correct length required for presentation on MHC class I molecules. Preferentially hydrolyzes the basic residues Arg and Lys.[1] [2] [3]
Publication Abstract from PubMed
Intracellular aminopeptidases endoplasmic reticulum aminopeptidases 1 and 2 (ERAP1 and ERAP2), and as well as insulin-regulated aminopeptidase (IRAP) process antigenic epitope precursors for loading onto MHC class I molecules and regulate the adaptive immune response. Their activity greatly affects the antigenic peptide repertoire presented to cytotoxic T lymphocytes and as a result can regulate cytotoxic cellular responses contributing to autoimmunity or immune evasion by viruses and cancer cells. Therefore, pharmacological regulation of their activity is a promising avenue for modulating the adaptive immune response with possible applications in controlling autoimmunity, in boosting immune responses to pathogens, and in cancer immunotherapy. In this study we exploited recent structural and biochemical analysis of ERAP1 and ERAP2 to design and develop phosphinic pseudopeptide transition state analogs that can inhibit this family of enzymes with nM affinity. X-ray crystallographic analysis of one such inhibitor in complex with ERAP2 validated our design, revealing a canonical mode of binding in the active site of the enzyme, and highlighted the importance of the S2' pocket for achieving inhibitor potency. Antigen processing and presentation assays in HeLa and murine colon carcinoma (CT26) cells showed that these inhibitors induce increased cell-surface antigen presentation of transfected and endogenous antigens and enhance cytotoxic T-cell responses, indicating that these enzymes primarily destroy epitopes in those systems. This class of inhibitors constitutes a promising tool for controlling the cellular adaptive immune response in humans by modulating the antigen processing and presentation pathway.
Rationally designed inhibitor targeting antigen-trimming aminopeptidases enhances antigen presentation and cytotoxic T-cell responses.,Zervoudi E, Saridakis E, Birtley JR, Seregin SS, Reeves E, Kokkala P, Aldhamen YA, Amalfitano A, Mavridis IM, James E, Georgiadis D, Stratikos E Proc Natl Acad Sci U S A. 2013 Dec 3;110(49):19890-5. doi:, 10.1073/pnas.1309781110. Epub 2013 Nov 18. PMID:24248368[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Tanioka T, Hattori A, Masuda S, Nomura Y, Nakayama H, Mizutani S, Tsujimoto M. Human leukocyte-derived arginine aminopeptidase. The third member of the oxytocinase subfamily of aminopeptidases. J Biol Chem. 2003 Aug 22;278(34):32275-83. Epub 2003 Jun 10. PMID:12799365 doi:http://dx.doi.org/10.1074/jbc.M305076200
- ↑ Saveanu L, Carroll O, Lindo V, Del Val M, Lopez D, Lepelletier Y, Greer F, Schomburg L, Fruci D, Niedermann G, van Endert PM. Concerted peptide trimming by human ERAP1 and ERAP2 aminopeptidase complexes in the endoplasmic reticulum. Nat Immunol. 2005 Jul;6(7):689-97. Epub 2005 May 22. PMID:15908954 doi:http://dx.doi.org/10.1038/ni1208
- ↑ Chang SC, Momburg F, Bhutani N, Goldberg AL. The ER aminopeptidase, ERAP1, trims precursors to lengths of MHC class I peptides by a "molecular ruler" mechanism. Proc Natl Acad Sci U S A. 2005 Nov 22;102(47):17107-12. Epub 2005 Nov 14. PMID:16286653 doi:http://dx.doi.org/0500721102
- ↑ Zervoudi E, Saridakis E, Birtley JR, Seregin SS, Reeves E, Kokkala P, Aldhamen YA, Amalfitano A, Mavridis IM, James E, Georgiadis D, Stratikos E. Rationally designed inhibitor targeting antigen-trimming aminopeptidases enhances antigen presentation and cytotoxic T-cell responses. Proc Natl Acad Sci U S A. 2013 Dec 3;110(49):19890-5. doi:, 10.1073/pnas.1309781110. Epub 2013 Nov 18. PMID:24248368 doi:http://dx.doi.org/10.1073/pnas.1309781110
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