4nnj

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==Crystal structure of Uba1 in complex with ubiquitin-AMP and thioesterified ubiquitin==
==Crystal structure of Uba1 in complex with ubiquitin-AMP and thioesterified ubiquitin==
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<StructureSection load='4nnj' size='340' side='right' caption='[[4nnj]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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<StructureSection load='4nnj' size='340' side='right'caption='[[4nnj]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4nnj]] is a 5 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4NNJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4NNJ FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4nnj]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4NNJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4NNJ FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
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<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=4nnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nnj OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4nnj RCSB], [http://www.ebi.ac.uk/pdbsum/4nnj PDBsum]</span></td></tr>
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<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=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4nnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nnj OCA], [https://pdbe.org/4nnj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4nnj RCSB], [https://www.ebi.ac.uk/pdbsum/4nnj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4nnj ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/UBA1_YEAST UBA1_YEAST]] Activates ubiquitin by first adenylating its C-terminal glycine residue with ATP, and thereafter linking this residue to the side chain of a cysteine residue in E1, yielding an ubiquitin-E1 thioester and free AMP. [[http://www.uniprot.org/uniprot/UBI4P_YEAST UBI4P_YEAST]] Ubiquitin exists either covalently attached to another protein, or free (unanchored). When covalently bound, it is conjugated to target proteins via an isopeptide bond either as a monomer (monoubiquitin), a polymer linked via different Lys residues of the ubiquitin (polyubiquitin chains) or a linear polymer linked via the initiator Met of the ubiquitin (linear polyubiquitin chains). Polyubiquitin chains, when attached to a target protein, have different functions depending on the Lys residue of the ubiquitin that is linked: Lys-6-linked may be involved in DNA repair; Lys-11-linked is involved in ERAD (endoplasmic reticulum-associated degradation) and in cell-cycle regulation; Lys-29-linked is involved in lysosomal degradation; Lys-33-linked is involved in kinase modification; Lys-48-linked is involved in protein degradation via the proteasome; Lys-63-linked is involved in endocytosis, and DNA-damage responses. Linear polymer chains formed via attachment by the initiator Met lead to cell signaling. Ubiquitin is usually conjugated to Lys residues of target proteins, however, in rare cases, conjugation to Cys or Ser residues has been observed. When polyubiquitin is free (unanchored-polyubiquitin), it also has distinct roles, such as in activation of protein kinases, and in signaling (By similarity).
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[https://www.uniprot.org/uniprot/UBA1_YEAST UBA1_YEAST] Activates ubiquitin by first adenylating its C-terminal glycine residue with ATP, and thereafter linking this residue to the side chain of a cysteine residue in E1, yielding an ubiquitin-E1 thioester and free AMP.
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== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 4nnj" style="background-color:#fffaf0;"></div>
==See Also==
==See Also==
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*[[Ubiquitin activating enzyme|Ubiquitin activating enzyme]]
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*[[3D structures of Ubiquitin activating enzyme|3D structures of Ubiquitin activating enzyme]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Schaefer, A]]
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[[Category: Large Structures]]
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[[Category: Schindelin, H]]
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[[Category: Saccharomyces cerevisiae S288C]]
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[[Category: Acyladenylate]]
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[[Category: Schaefer A]]
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[[Category: Amp]]
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[[Category: Schindelin H]]
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[[Category: Protein binding]]
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[[Category: Thioesterified ub]]
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[[Category: Uba1]]
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[[Category: Ubiquitin]]
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[[Category: Ubiquitin activation]]
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[[Category: Ubiquitin thioester]]
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Current revision

Crystal structure of Uba1 in complex with ubiquitin-AMP and thioesterified ubiquitin

PDB ID 4nnj

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