4eno
From Proteopedia
(Difference between revisions)
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==Crystal structure of oxidized human nm23-H1== | ==Crystal structure of oxidized human nm23-H1== | ||
| - | <StructureSection load='4eno' size='340' side='right' caption='[[4eno]], [[Resolution|resolution]] 2.80Å' scene=''> | + | <StructureSection load='4eno' size='340' side='right'caption='[[4eno]], [[Resolution|resolution]] 2.80Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4eno]] 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=4ENO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4ENO FirstGlance]. <br> | <table><tr><td colspan='2'>[[4eno]] 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=4ENO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4ENO FirstGlance]. <br> | ||
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== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/NDKA_HUMAN NDKA_HUMAN]] Major role in the synthesis of nucleoside triphosphates other than ATP. Possesses nucleoside-diphosphate kinase, serine/threonine-specific protein kinase, geranyl and farnesyl pyrophosphate kinase, histidine protein kinase and 3'-5' exonuclease activities. Involved in cell proliferation, differentiation and development, signal transduction, G protein-coupled receptor endocytosis, and gene expression. Required for neural development including neural patterning and cell fate determination.<ref>PMID:2056128</ref> <ref>PMID:8810265</ref> <ref>PMID:12628186</ref> | [[http://www.uniprot.org/uniprot/NDKA_HUMAN NDKA_HUMAN]] Major role in the synthesis of nucleoside triphosphates other than ATP. Possesses nucleoside-diphosphate kinase, serine/threonine-specific protein kinase, geranyl and farnesyl pyrophosphate kinase, histidine protein kinase and 3'-5' exonuclease activities. Involved in cell proliferation, differentiation and development, signal transduction, G protein-coupled receptor endocytosis, and gene expression. Required for neural development including neural patterning and cell fate determination.<ref>PMID:2056128</ref> <ref>PMID:8810265</ref> <ref>PMID:12628186</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Nm23-H1/NDPK-A, a tumour metastasis suppressor, is a multifunctional housekeeping enzyme with nucleoside diphosphate kinase activity. Hexameric Nm23-H1 is required for suppression of tumour metastasis and it is dissociated into dimers under oxidative conditions. Here, the crystal structure of oxidized Nm23-H1 is presented. It reveals the formation of an intramolecular disulfide bond between Cys4 and Cys145 that triggers a large conformational change that destabilizes the hexameric state. The dependence of the dissociation dynamics on the H2O2 concentration was determined using hydrogen/deuterium-exchange experiments. The quaternary conformational change provides a suitable environment for the oxidation of Cys109 to sulfonic acid, as demonstrated by peptide sequencing using nanoUPLC-ESI-q-TOF tandem MS. From these and other data, it is proposed that the molecular and cellular functions of Nm23-H1 are regulated by a series of oxidative modifications coupled to its oligomeric states and that the modified cysteines are resolvable by NADPH-dependent reduction systems. These findings broaden the understanding of the complicated enzyme-regulatory mechanisms that operate under oxidative conditions. | ||
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| + | Structure of Nm23-H1 under oxidative conditions.,Kim MS, Jeong J, Jeong J, Shin DH, Lee KJ Acta Crystallogr D Biol Crystallogr. 2013 Apr;69(Pt 4):669-80. doi:, 10.1107/S0907444913001194. Epub 2013 Mar 14. PMID:23519676<ref>PMID:23519676</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 4eno" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
| - | *[[Nucleoside diphosphate kinase|Nucleoside diphosphate kinase]] | + | *[[Nucleoside diphosphate kinase 3D structures|Nucleoside diphosphate kinase 3D structures]] |
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Human]] | [[Category: Human]] | ||
| + | [[Category: Large Structures]] | ||
[[Category: Nucleoside-diphosphate kinase]] | [[Category: Nucleoside-diphosphate kinase]] | ||
[[Category: Kim, M S]] | [[Category: Kim, M S]] | ||
Revision as of 09:59, 25 December 2019
Crystal structure of oxidized human nm23-H1
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