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| | ==SOLUTION STRUCTURE OF A CALMODULIN-TARGET PEPTIDE COMPLEX BY MULTIDIMENSIONAL NMR== | | ==SOLUTION STRUCTURE OF A CALMODULIN-TARGET PEPTIDE COMPLEX BY MULTIDIMENSIONAL NMR== |
| - | <StructureSection load='2bbm' size='340' side='right' caption='[[2bbm]], [[NMR_Ensembles_of_Models | 1 NMR models]]' scene=''> | + | <StructureSection load='2bbm' size='340' side='right'caption='[[2bbm]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2bbm]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Drome Drome]. The August 2003 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Calmodulin'' by Shuchismita Dutta and David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2003_8 10.2210/rcsb_pdb/mom_2003_8]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BBM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BBM FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2bbm]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster] and [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. The August 2003 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Calmodulin'' by Shuchismita Dutta and David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2003_8 10.2210/rcsb_pdb/mom_2003_8]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BBM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BBM FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2bbn|2bbn]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</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=2bbm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bbm OCA], [http://pdbe.org/2bbm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2bbm RCSB], [http://www.ebi.ac.uk/pdbsum/2bbm PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2bbm 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=2bbm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bbm OCA], [https://pdbe.org/2bbm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bbm RCSB], [https://www.ebi.ac.uk/pdbsum/2bbm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bbm ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/CALM_DROME CALM_DROME]] Calmodulin mediates the control of a large number of enzymes, ion channels and other proteins by Ca(2+). Among the enzymes to be stimulated by the calmodulin-Ca(2+) complex are a number of protein kinases and phosphatases. [[http://www.uniprot.org/uniprot/MYLK2_RABIT MYLK2_RABIT]] Implicated in the level of global muscle contraction and cardiac function (By similarity). Phosphorylates a specific serine in the N-terminus of a myosin light chain. | + | [https://www.uniprot.org/uniprot/CALM_DROME CALM_DROME] Calmodulin mediates the control of a large number of enzymes, ion channels and other proteins by Ca(2+). Among the enzymes to be stimulated by the calmodulin-Ca(2+) complex are a number of protein kinases and phosphatases. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | ==See Also== | | ==See Also== |
| - | *[[Calmodulin|Calmodulin]] | + | *[[Calmodulin 3D structures|Calmodulin 3D structures]] |
| - | *[[NMR Ensembles of Models|NMR Ensembles of Models]]
| + | |
| - | *[[Structural alignment tools|Structural alignment tools]]
| + | |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Calmodulin]] | | [[Category: Calmodulin]] |
| - | [[Category: Drome]] | + | [[Category: Drosophila melanogaster]] |
| | + | [[Category: Large Structures]] |
| | + | [[Category: Oryctolagus cuniculus]] |
| | [[Category: RCSB PDB Molecule of the Month]] | | [[Category: RCSB PDB Molecule of the Month]] |
| - | [[Category: Bax, A]] | + | [[Category: Bax A]] |
| - | [[Category: Clore, G M]] | + | [[Category: Clore GM]] |
| - | [[Category: Gronenborn, A M]] | + | [[Category: Gronenborn AM]] |
| - | [[Category: Ikura, M]] | + | [[Category: Ikura M]] |
| - | [[Category: Calcium-binding protein]]
| + | |
| Structural highlights
Function
CALM_DROME Calmodulin mediates the control of a large number of enzymes, ion channels and other proteins by Ca(2+). Among the enzymes to be stimulated by the calmodulin-Ca(2+) complex are a number of protein kinases and phosphatases.
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
The three-dimensional solution structure of the complex between calcium-bound calmodulin (Ca(2+)-CaM) and a 26-residue synthetic peptide comprising the CaM binding domain (residues 577 to 602) of skeletal muscle myosin light chain kinase, has been determined using multidimensional heteronuclear filtered and separated nuclear magnetic resonance spectroscopy. The two domains of CaM (residues 6 to 73 and 83 to 146) remain essentially unchanged upon complexation. The long central helix (residues 65 to 93), however, which connects the two domains in the crystal structure of Ca(2+)-CaM, is disrupted into two helices connected by a long flexible loop (residues 74 to 82), thereby enabling the two domains to clamp residues 3 to 21 of the bound peptide, which adopt a helical conformation. The overall structure of the complex is globular, approximating an ellipsoid of dimensions 47 by 32 by 30 angstroms. The helical peptide is located in a hydrophobic channel that passes through the center of the ellipsoid at an angle of approximately 45 degrees with its long axis. The complex is mainly stabilized by hydrophobic interactions which, from the CaM side, involve an unusually large number of methionines. Key residues of the peptide are Trp4 and Phe17, which serve to anchor the amino- and carboxyl-terminal halves of the peptide to the carboxyl- and amino-terminal domains of CaM, respectively. Sequence comparisons indicate that a number of peptides that bind CaM with high affinity share this common feature containing either aromatic residues or long-chain hydrophobic ones separated by a stretch of 12 residues, suggesting that they interact with CaM in a similar manner.
Solution structure of a calmodulin-target peptide complex by multidimensional NMR.,Ikura M, Clore GM, Gronenborn AM, Zhu G, Klee CB, Bax A Science. 1992 May 1;256(5057):632-8. PMID:1585175[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Ikura M, Clore GM, Gronenborn AM, Zhu G, Klee CB, Bax A. Solution structure of a calmodulin-target peptide complex by multidimensional NMR. Science. 1992 May 1;256(5057):632-8. PMID:1585175
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