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| | ==Crystal Structure of Bcy1, the Yeast Regulatory Subunit of PKA== | | ==Crystal Structure of Bcy1, the Yeast Regulatory Subunit of PKA== |
| - | <StructureSection load='3of1' size='340' side='right' caption='[[3of1]], [[Resolution|resolution]] 2.21Å' scene=''> | + | <StructureSection load='3of1' size='340' side='right'caption='[[3of1]], [[Resolution|resolution]] 2.21Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3of1]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OF1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3OF1 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3of1]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OF1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OF1 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CMP:ADENOSINE-3,5-CYCLIC-MONOPHOSPHATE'>CMP</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CMP:ADENOSINE-3,5-CYCLIC-MONOPHOSPHATE'>CMP</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1rgs|1rgs]], [[1cx4|1cx4]]</td></tr> | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1rgs|1rgs]], [[1cx4|1cx4]]</div></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BCY1, REG1, SRA1, YIL033C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</td></tr> | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BCY1, REG1, SRA1, YIL033C ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</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=3of1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3of1 OCA], [http://pdbe.org/3of1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3of1 RCSB], [http://www.ebi.ac.uk/pdbsum/3of1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3of1 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=3of1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3of1 OCA], [https://pdbe.org/3of1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3of1 RCSB], [https://www.ebi.ac.uk/pdbsum/3of1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3of1 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/KAPR_YEAST KAPR_YEAST]] Regulatory subunit of the cyclic AMP-dependent protein kinase (PKA), an effector of the Ras/cAMP pathway. Inhibits PKA activity in the absence of cAMP. cAMP activates PKA and promotes growth and proliferation in response to good nutrient conditions. Together with ZDS1, provides a negative feedback control on the cell wall integrity-signaling pathway by acting as a negative regulator of MAP kinase SLT2/MPK1.<ref>PMID:3037314</ref> <ref>PMID:2823100</ref> <ref>PMID:6243658</ref> <ref>PMID:12704202</ref> | + | [[https://www.uniprot.org/uniprot/KAPR_YEAST KAPR_YEAST]] Regulatory subunit of the cyclic AMP-dependent protein kinase (PKA), an effector of the Ras/cAMP pathway. Inhibits PKA activity in the absence of cAMP. cAMP activates PKA and promotes growth and proliferation in response to good nutrient conditions. Together with ZDS1, provides a negative feedback control on the cell wall integrity-signaling pathway by acting as a negative regulator of MAP kinase SLT2/MPK1.<ref>PMID:3037314</ref> <ref>PMID:2823100</ref> <ref>PMID:6243658</ref> <ref>PMID:12704202</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | ==See Also== | | ==See Also== |
| - | *[[CAMP-dependent protein kinase|CAMP-dependent protein kinase]] | + | *[[CAMP-dependent protein kinase 3D structures|CAMP-dependent protein kinase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Atcc 18824]] | | [[Category: Atcc 18824]] |
| | + | [[Category: Large Structures]] |
| | [[Category: Moreno, S]] | | [[Category: Moreno, S]] |
| | [[Category: Ralston, C Y]] | | [[Category: Ralston, C Y]] |
| Structural highlights
Function
[KAPR_YEAST] Regulatory subunit of the cyclic AMP-dependent protein kinase (PKA), an effector of the Ras/cAMP pathway. Inhibits PKA activity in the absence of cAMP. cAMP activates PKA and promotes growth and proliferation in response to good nutrient conditions. Together with ZDS1, provides a negative feedback control on the cell wall integrity-signaling pathway by acting as a negative regulator of MAP kinase SLT2/MPK1.[1] [2] [3] [4]
Publication Abstract from PubMed
The major cAMP receptors in eukaryotes are the regulatory (R) subunits of PKA, an allosteric enzyme conserved in fungi through mammals. While mammals have four R-subunit genes, Saccharomyces cerevisiae has only one, Bcy1. To achieve a molecular understanding of PKA activation in yeast and to explore the evolution of cyclic-nucleotide binding (CNB) domains, we solved the structure of cAMP-bound Bcy1(168-416). Surprisingly, the relative orientation of the two CNB domains in Bcy1 is very different from mammalian R-subunits. This quaternary structure is defined primarily by a fungi-specific sequence in the hinge between the alphaB/alphaC helices of the CNB-A domain. The unique interface between the two CNB domains in Bcy1 defines the allosteric mechanism for cooperative activation of PKA by cAMP. Some interface motifs are isoform-specific while others, although conserved, play surprisingly different roles in each R-subunit. Phylogenetic analysis shows that structural differences in Bcy1 are shared by fungi of the subphylum Saccharomycotina.
Structure of yeast regulatory subunit: a glimpse into the evolution of PKA signaling.,Rinaldi J, Wu J, Yang J, Ralston CY, Sankaran B, Moreno S, Taylor SS Structure. 2010 Nov 10;18(11):1471-82. PMID:21070946[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Toda T, Cameron S, Sass P, Zoller M, Scott JD, McMullen B, Hurwitz M, Krebs EG, Wigler M. Cloning and characterization of BCY1, a locus encoding a regulatory subunit of the cyclic AMP-dependent protein kinase in Saccharomyces cerevisiae. Mol Cell Biol. 1987 Apr;7(4):1371-7. PMID:3037314
- ↑ Cannon JF, Tatchell K. Characterization of Saccharomyces cerevisiae genes encoding subunits of cyclic AMP-dependent protein kinase. Mol Cell Biol. 1987 Aug;7(8):2653-63. PMID:2823100
- ↑ Hixson CS, Krebs EG. Characterization of a cyclic AMP-binding protein from bakers' yeast. Identification as a regulatory subunit of cyclic AMP-dependent protein kinase. J Biol Chem. 1980 Mar 10;255(5):2137-45. PMID:6243658
- ↑ Griffioen G, Swinnen S, Thevelein JM. Feedback inhibition on cell wall integrity signaling by Zds1 involves Gsk3 phosphorylation of a cAMP-dependent protein kinase regulatory subunit. J Biol Chem. 2003 Jun 27;278(26):23460-71. Epub 2003 Apr 18. PMID:12704202 doi:10.1074/jbc.M210691200
- ↑ Rinaldi J, Wu J, Yang J, Ralston CY, Sankaran B, Moreno S, Taylor SS. Structure of yeast regulatory subunit: a glimpse into the evolution of PKA signaling. Structure. 2010 Nov 10;18(11):1471-82. PMID:21070946 doi:10.1016/j.str.2010.08.013
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