1nw3

<table><tr><td colspan='2'>[[1nw3]] 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=1NW3 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1NW3 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dot1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1nw3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nw3 OCA], [http://pdbe.org/1nw3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1nw3 RCSB], [http://www.ebi.ac.uk/pdbsum/1nw3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1nw3 ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/DOT1L_HUMAN DOT1L_HUMAN]] Histone methyltransferase. Methylates 'Lys-79' of histone H3. Nucleosomes are preferred as substrate compared to free histones. Binds to DNA.

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== Publication Abstract from PubMed ==

Dot1 is an evolutionarily conserved histone methyltransferase that methylates lysine-79 of histone H3 in the core domain. Unlike other histone methyltransferases, Dot1 does not contain a SET domain, and it specifically methylates nucleosomal histone H3. We have solved a 2.5 A resolution structure of the catalytic domain of human Dot1, hDOT1L, in complex with S-adenosyl-L-methionine (SAM). The structure reveals a unique organization of a mainly alpha-helical N-terminal domain and a central open alpha/beta structure, an active site consisting of a SAM binding pocket, and a potential lysine binding channel. We also show that a flexible, positively charged region at the C terminus of the catalytic domain is critical for nucleosome binding and enzymatic activity. These structural and biochemical analyses, combined with molecular modeling, provide mechanistic insights into the catalytic mechanism and nucleosomal specificity of Dot1 proteins.

Structure of the catalytic domain of human DOT1L, a non-SET domain nucleosomal histone methyltransferase.,Min J, Feng Q, Li Z, Zhang Y, Xu RM Cell. 2003 Mar 7;112(5):711-23. PMID:12628190<ref>PMID:12628190</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Human]]

[[Category: Feng, Q]]

[[Category: Li, Z H]]

[[Category: Min, J R]]

[[Category: Xu, R M]]

[[Category: Zhang, Y]]

[[Category: Transferase]]