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| | <StructureSection load='2hmy' size='340' side='right'caption='[[2hmy]], [[Resolution|resolution]] 2.61Å' scene=''> | | <StructureSection load='2hmy' size='340' side='right'caption='[[2hmy]], [[Resolution|resolution]] 2.61Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2hmy]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_x"_pritchett_and_stillman_1919 "bacillus x" pritchett and stillman 1919]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HMY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2HMY FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2hmy]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Haemophilus_haemolyticus Haemophilus haemolyticus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HMY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HMY FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</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]] 2.61Å</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA_(cytosine-5-)-methyltransferase DNA (cytosine-5-)-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.37 2.1.1.37] </span></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</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=2hmy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hmy OCA], [http://pdbe.org/2hmy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2hmy RCSB], [http://www.ebi.ac.uk/pdbsum/2hmy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2hmy 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=2hmy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hmy OCA], [https://pdbe.org/2hmy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hmy RCSB], [https://www.ebi.ac.uk/pdbsum/2hmy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hmy ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/MTH1_HAEPH MTH1_HAEPH]] This methylase recognizes the double-stranded sequence GCGC, causes specific methylation on C-2 on both strands, and protects the DNA from cleavage by the HhaI endonuclease. | + | [https://www.uniprot.org/uniprot/MTH1_HAEPH MTH1_HAEPH] This methylase recognizes the double-stranded sequence GCGC, causes specific methylation on C-2 on both strands, and protects the DNA from cleavage by the HhaI endonuclease. |
| | == 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: Bacillus x pritchett and stillman 1919]] | + | [[Category: Haemophilus haemolyticus]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Cheng, X]] | + | [[Category: Cheng X]] |
| - | [[Category: Gara, M O]] | + | [[Category: O'Gara M]] |
| - | [[Category: Roberts, R J]] | + | [[Category: Roberts RJ]] |
| - | [[Category: Zhang, X]] | + | [[Category: Zhang X]] |
| Structural highlights
Function
MTH1_HAEPH This methylase recognizes the double-stranded sequence GCGC, causes specific methylation on C-2 on both strands, and protects the DNA from cleavage by the HhaI endonuclease.
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
We have determined a structure for a complex formed between HhaI methyltransferase (M.HhaI) and S-adenosyl-L-methionine (AdoMet) in the presence of a non-specific short oligonucleotide. M.HhaI binds to the non-specific short oligonucleotides in solution. Although no DNA is incorporated in the crystal, AdoMet binds in a primed orientation, identical with that observed in the ternary complex of the enzyme, cognate DNA, and AdoMet or S-adenosyl-L-homocysteine (AdoHcy). This orientation differs from the previously observed unprimed orientation in the M.HhaI-AdoMet binary complex, where the S+-CH3 unit of AdoMet is protected by a favorable cation-pi interaction with Trp41. The structure suggests that the presence of DNA can guide AdoMet into the primed orientation. These results shed new light on the proposed ordered mechanism of binding and explains the stable association between AdoMet and M.HhaI.
Structure of a binary complex of HhaI methyltransferase with S-adenosyl-L-methionine formed in the presence of a short non-specific DNA oligonucleotide.,O'Gara M, Zhang X, Roberts RJ, Cheng X J Mol Biol. 1999 Mar 26;287(2):201-9. PMID:10080885[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ O'Gara M, Zhang X, Roberts RJ, Cheng X. Structure of a binary complex of HhaI methyltransferase with S-adenosyl-L-methionine formed in the presence of a short non-specific DNA oligonucleotide. J Mol Biol. 1999 Mar 26;287(2):201-9. PMID:10080885
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