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| | ==Crystal structure of unliganded NmrA-AreA zinc finger complex== | | ==Crystal structure of unliganded NmrA-AreA zinc finger complex== |
| - | <StructureSection load='2vus' size='340' side='right' caption='[[2vus]], [[Resolution|resolution]] 2.60Å' scene=''> | + | <StructureSection load='2vus' size='340' side='right'caption='[[2vus]], [[Resolution|resolution]] 2.60Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2vus]] is a 16 chain structure with sequence from [http://en.wikipedia.org/wiki/A._nidulans A. nidulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VUS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2VUS FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2vus]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Aspergillus_nidulans Aspergillus nidulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VUS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2VUS FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 2.6Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2vut|2vut]], [[2vuu|2vuu]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=2vus FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vus OCA], [http://pdbe.org/2vus PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2vus RCSB], [http://www.ebi.ac.uk/pdbsum/2vus PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2vus ProSAT]</span></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=2vus FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vus OCA], [https://pdbe.org/2vus PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2vus RCSB], [https://www.ebi.ac.uk/pdbsum/2vus PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2vus ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/NMRA_EMENI NMRA_EMENI]] May be a redox sensor protein. Has much higher affinity for NAD(P) than for NAD(P)H. Has similar affinity for NAD and NADP. Negative transcriptional regulator involved in the post-transcriptional modulation of the GATA-type transcription factor areA, forming part of a system controlling nitrogen metabolite repression (By similarity). Interferes with the interaction between areA and target DNA. Overexpression leads to areA inhibition.<ref>PMID:17854403</ref> <ref>PMID:12764138</ref> <ref>PMID:15537757</ref> <ref>PMID:18602114</ref> [[http://www.uniprot.org/uniprot/AREA_EMENI AREA_EMENI]] Transcription activator that binds the consensus DNA element 5'-CGATAG-3' and mediates nitrogen metabolite repression. Activates the transcription of uapA.<ref>PMID:1970293</ref> | + | [https://www.uniprot.org/uniprot/NMRA_EMENI NMRA_EMENI] May be a redox sensor protein. Has much higher affinity for NAD(P) than for NAD(P)H. Has similar affinity for NAD and NADP. Negative transcriptional regulator involved in the post-transcriptional modulation of the GATA-type transcription factor areA, forming part of a system controlling nitrogen metabolite repression (By similarity). Interferes with the interaction between areA and target DNA. Overexpression leads to areA inhibition.<ref>PMID:17854403</ref> <ref>PMID:12764138</ref> <ref>PMID:15537757</ref> <ref>PMID:18602114</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: A. nidulans]] | + | [[Category: Aspergillus nidulans]] |
| - | [[Category: Hawkins, A R]] | + | [[Category: Large Structures]] |
| - | [[Category: Johnson, C]] | + | [[Category: Hawkins AR]] |
| - | [[Category: Kotaka, M]] | + | [[Category: Johnson C]] |
| - | [[Category: Lamb, H K]] | + | [[Category: Kotaka M]] |
| - | [[Category: Ren, J]] | + | [[Category: Lamb HK]] |
| - | [[Category: Stammers, D K]] | + | [[Category: Ren J]] |
| - | [[Category: Activator]]
| + | [[Category: Stammers DK]] |
| - | [[Category: Area]]
| + | |
| - | [[Category: Dna-binding]]
| + | |
| - | [[Category: Gata-type]]
| + | |
| - | [[Category: Metal-binding]]
| + | |
| - | [[Category: Nitrate assimilation]]
| + | |
| - | [[Category: Nmra]]
| + | |
| - | [[Category: Nucleus]]
| + | |
| - | [[Category: Protein-protein interaction]]
| + | |
| - | [[Category: Transcription]]
| + | |
| - | [[Category: Transcription regulation]]
| + | |
| - | [[Category: Zinc]]
| + | |
| - | [[Category: Zinc finger]]
| + | |
| - | [[Category: Zinc-finger]]
| + | |
| Structural highlights
Function
NMRA_EMENI May be a redox sensor protein. Has much higher affinity for NAD(P) than for NAD(P)H. Has similar affinity for NAD and NADP. Negative transcriptional regulator involved in the post-transcriptional modulation of the GATA-type transcription factor areA, forming part of a system controlling nitrogen metabolite repression (By similarity). Interferes with the interaction between areA and target DNA. Overexpression leads to areA inhibition.[1] [2] [3] [4]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Amongst the most common protein motifs in eukaryotes are zinc fingers (ZFs), which, although largely known as DNA binding modules, also can have additional important regulatory roles in forming protein:protein interactions. AreA is a transcriptional activator central to nitrogen metabolism in Aspergillus nidulans. AreA contains a GATA-type ZF that has a competing dual recognition function, binding either DNA or the negative regulator NmrA. We report the crystal structures of three AreA ZF-NmrA complexes including two with bound NAD(+) or NADP(+). The molecular recognition of AreA ZF-NmrA involves binding of the ZF to NmrA via hydrophobic and hydrogen bonding interactions through helices alpha1, alpha6 and alpha11. Comparison with an earlier NMR solution structure of AreA ZF-DNA complex by overlap of the AreA ZFs shows that parts of helices alpha6 and alpha11 of NmrA are positioned close to the GATA motif of the DNA, mimicking the major groove of DNA. The extensive overlap of DNA with NmrA explains their mutually exclusive binding to the AreA ZF. The presence of bound NAD(+)/NADP(+) in the NmrA-AreaA ZF complex, however, causes minimal structural changes. Thus, any regulatory effects on AreA function mediated by the binding of oxidised nicotinamide dinucleotides to NmrA in the NmrA-AreA ZF complex appear not to be modulated via protein conformational rearrangements.
Structural analysis of the recognition of the negative regulator NmrA and DNA by the zinc finger from the GATA-type transcription factor AreA.,Kotaka M, Johnson C, Lamb HK, Hawkins AR, Ren J, Stammers DK J Mol Biol. 2008 Aug 29;381(2):373-82. Epub 2008 Jun 5. PMID:18602114[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Wong KH, Hynes MJ, Todd RB, Davis MA. Transcriptional control of nmrA by the bZIP transcription factor MeaB reveals a new level of nitrogen regulation in Aspergillus nidulans. Mol Microbiol. 2007 Oct;66(2):534-51. Epub 2007 Sep 10. PMID:17854403 doi:http://dx.doi.org/10.1111/j.1365-2958.2007.05940.x
- ↑ Lamb HK, Leslie K, Dodds AL, Nutley M, Cooper A, Johnson C, Thompson P, Stammers DK, Hawkins AR. The negative transcriptional regulator NmrA discriminates between oxidized and reduced dinucleotides. J Biol Chem. 2003 Aug 22;278(34):32107-14. Epub 2003 May 22. PMID:12764138 doi:10.1074/jbc.M304104200
- ↑ Lamb HK, Ren J, Park A, Johnson C, Leslie K, Cocklin S, Thompson P, Mee C, Cooper A, Stammers DK, Hawkins AR. Modulation of the ligand binding properties of the transcription repressor NmrA by GATA-containing DNA and site-directed mutagenesis. Protein Sci. 2004 Dec;13(12):3127-38. Epub 2004 Nov 10. PMID:15537757 doi:10.1110/ps.04958904
- ↑ Kotaka M, Johnson C, Lamb HK, Hawkins AR, Ren J, Stammers DK. Structural analysis of the recognition of the negative regulator NmrA and DNA by the zinc finger from the GATA-type transcription factor AreA. J Mol Biol. 2008 Aug 29;381(2):373-82. Epub 2008 Jun 5. PMID:18602114 doi:http://dx.doi.org/10.1016/j.jmb.2008.05.077
- ↑ Kotaka M, Johnson C, Lamb HK, Hawkins AR, Ren J, Stammers DK. Structural analysis of the recognition of the negative regulator NmrA and DNA by the zinc finger from the GATA-type transcription factor AreA. J Mol Biol. 2008 Aug 29;381(2):373-82. Epub 2008 Jun 5. PMID:18602114 doi:http://dx.doi.org/10.1016/j.jmb.2008.05.077
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