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| | <StructureSection load='5ed3' size='340' side='right'caption='[[5ed3]], [[Resolution|resolution]] 1.31Å' scene=''> | | <StructureSection load='5ed3' size='340' side='right'caption='[[5ed3]], [[Resolution|resolution]] 1.31Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5ed3]] 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=5ED3 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5ED3 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5ed3]] 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=5ED3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5ED3 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</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]] 1.309Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5ecb|5ecb]], [[5ecz|5ecz]], [[5ed5|5ed5]], [[5ed6|5ed6]], [[5ede|5ede]], [[5efl|5efl]], [[5efp|5efp]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HINT1, HINT, PKCI1, PRKCNH1 ([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=5ed3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ed3 OCA], [https://pdbe.org/5ed3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ed3 RCSB], [https://www.ebi.ac.uk/pdbsum/5ed3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ed3 ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5ed3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ed3 OCA], [http://pdbe.org/5ed3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ed3 RCSB], [http://www.ebi.ac.uk/pdbsum/5ed3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ed3 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/HINT1_HUMAN HINT1_HUMAN]] Hydrolyzes adenosine 5'-monophosphoramidate substrates such as AMP-morpholidate, AMP-N-alanine methyl ester, AMP-alpha-acetyl lysine methyl ester and AMP-NH2 (By similarity). | + | [https://www.uniprot.org/uniprot/HINT1_HUMAN HINT1_HUMAN] Hydrolyzes adenosine 5'-monophosphoramidate substrates such as AMP-morpholidate, AMP-N-alanine methyl ester, AMP-alpha-acetyl lysine methyl ester and AMP-NH2 (By similarity). |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Fang, P]] | + | [[Category: Fang P]] |
| - | [[Category: Guo, M]] | + | [[Category: Guo M]] |
| - | [[Category: Wang, J]] | + | [[Category: Wang J]] |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Nucleotide binding]]
| + | |
| - | [[Category: Regulation of transcription]]
| + | |
| - | [[Category: Signal transduction]]
| + | |
| Structural highlights
Function
HINT1_HUMAN Hydrolyzes adenosine 5'-monophosphoramidate substrates such as AMP-morpholidate, AMP-N-alanine methyl ester, AMP-alpha-acetyl lysine methyl ester and AMP-NH2 (By similarity).
Publication Abstract from PubMed
Signal transduction systems enable organisms to monitor their external environments and accordingly adjust the cellular processes. In mast cells, the second messenger Ap4A binds to the histidine triad nucleotide-binding protein 1 (HINT1), disrupts its interaction with the microphthalmia-associated transcription factor (MITF), and eventually activates the transcription of genes downstream of MITF in response to immunostimulation. How the HINT1 protein recognizes and is regulated by Ap4A remain unclear. Here, using eight crystal structures, biochemical experiments, negative stain electron microscopy, and cellular experiments, we report that Ap4A specifically polymerizes HINT1 in solution and in activated rat basophilic leukemia cells. The polymerization interface overlaps with the area on HINT1 for MITF interaction, suggesting a possible competitive mechanism to release MITF for transcriptional activation. The mechanism depends precisely on the length of the phosphodiester linkage of Ap4A. These results highlight a direct polymerization signaling mechanism by the second messenger.
Second messenger Ap4A polymerizes target protein HINT1 to transduce signals in FcepsilonRI-activated mast cells.,Yu J, Liu Z, Liang Y, Luo F, Zhang J, Tian C, Motzik A, Zheng M, Kang J, Zhong G, Liu C, Fang P, Guo M, Razin E, Wang J Nat Commun. 2019 Oct 11;10(1):4664. doi: 10.1038/s41467-019-12710-8. PMID:31604935[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Yu J, Liu Z, Liang Y, Luo F, Zhang J, Tian C, Motzik A, Zheng M, Kang J, Zhong G, Liu C, Fang P, Guo M, Razin E, Wang J. Second messenger Ap4A polymerizes target protein HINT1 to transduce signals in FcepsilonRI-activated mast cells. Nat Commun. 2019 Oct 11;10(1):4664. doi: 10.1038/s41467-019-12710-8. PMID:31604935 doi:http://dx.doi.org/10.1038/s41467-019-12710-8
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