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3vv0
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
[[3vv0]] is a 1 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=3VV0 OCA]. <br> | [[3vv0]] is a 1 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=3VV0 OCA]. <br> | ||
| - | <b>Related:</b> [[3vuz|3vuz]]<br> | + | <b>[[Ligand|Ligands:]]</b> <scene name='pdbligand=KH3:5-{[(3S)-3-AMINO-3-CARBOXYPROPYL][2-(HEXYLAMINO)ETHYL]AMINO}-5-DEOXYADENOSINE'>KH3</scene><br> |
| + | <b>[[Related_structure|Related:]]</b> [[3vuz|3vuz]]<br> | ||
<b>Activity:</b> <span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span><br> | <b>Activity:</b> <span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span><br> | ||
| + | <b>Resources:</b> <span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3vv0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3vv0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3vv0 RCSB], [http://www.ebi.ac.uk/pdbsum/3vv0 PDBsum]</span><br> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
SET7/9 is a protein lysine methyltransferase that methylates histone H3 and nonhistone proteins such as p53, TAF10 and oestrogen receptor alpha. In previous work, novel inhibitors of SET7/9 that are amine analogues of the coenzyme S-(5'-adenosyl)-L-methionine (AdoMet) have been developed. Here, crystal structures of SET7/9 are reported in complexes with two AdoMet analogues, designated DAAM-3 and AAM-1, in which an n-hexylaminoethyl group or an n-hexyl group is attached to the N atom that replaces the S atom of AdoMet, respectively. In both structures, the inhibitors bind to the coenzyme-binding site and their additional alkyl chain binds in the lysine-access channel. The N atom in the azaalkyl chain of DAAM-3 is located at almost the same position as the N-methyl C atom of the methylated lysine side chain in the substrate-peptide complex structures and stabilizes complex formation by hydrogen bonding to the substrate-binding site residues of SET7/9. On the other hand, the alkyl chain of AAM-1, which is a weaker inhibitor than DAAM-3, binds in the lysine-access channel only through hydrophobic and van der Waals interactions. Unexpectedly, the substrate-binding site of SET7/9 complexed with AAM-1 specifically interacts with the artificial N-terminal sequence of an adjacent symmetry-related molecule, presumably stabilizing the alkyl chain of AAM-1. | SET7/9 is a protein lysine methyltransferase that methylates histone H3 and nonhistone proteins such as p53, TAF10 and oestrogen receptor alpha. In previous work, novel inhibitors of SET7/9 that are amine analogues of the coenzyme S-(5'-adenosyl)-L-methionine (AdoMet) have been developed. Here, crystal structures of SET7/9 are reported in complexes with two AdoMet analogues, designated DAAM-3 and AAM-1, in which an n-hexylaminoethyl group or an n-hexyl group is attached to the N atom that replaces the S atom of AdoMet, respectively. In both structures, the inhibitors bind to the coenzyme-binding site and their additional alkyl chain binds in the lysine-access channel. The N atom in the azaalkyl chain of DAAM-3 is located at almost the same position as the N-methyl C atom of the methylated lysine side chain in the substrate-peptide complex structures and stabilizes complex formation by hydrogen bonding to the substrate-binding site residues of SET7/9. On the other hand, the alkyl chain of AAM-1, which is a weaker inhibitor than DAAM-3, binds in the lysine-access channel only through hydrophobic and van der Waals interactions. Unexpectedly, the substrate-binding site of SET7/9 complexed with AAM-1 specifically interacts with the artificial N-terminal sequence of an adjacent symmetry-related molecule, presumably stabilizing the alkyl chain of AAM-1. | ||
Revision as of 10:09, 30 April 2014
Crystal structure of histone methyltransferase SET7/9 in comlex with DAAM-3
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Categories: Histone-lysine N-methyltransferase | Human | Handa, N. | Hirano, T. | Honda, K. | Kagechika, H. | Niwa, H. | Ohsawa, N. | Shirouzu, M. | Tomabechi, Y. | Toyama, M. | Umehara, T. | Yokoyama, S. | Adenosylmethionine binding | Set domain | Transferase | Transferase-transferase inhibitor complex
