View source for 3bam


==RESTRICTION ENDONUCLEASE BAMHI COMPLEX WITH DNA AND MANGANESE IONS (POST-REACTIVE COMPLEX)==
<StructureSection load='3bam' size='340' side='right'caption='[[3bam]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3bam]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_amyloliquefaciens Bacillus amyloliquefaciens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BAM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BAM FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></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=3bam FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bam OCA], [https://pdbe.org/3bam PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3bam RCSB], [https://www.ebi.ac.uk/pdbsum/3bam PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3bam ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/T2BA_BACAM T2BA_BACAM] Recognizes the double-stranded sequence GGATCC and cleaves after G-1.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Type II restriction enzymes are characterized by their remarkable specificity and simplicity. They require only divalent metals (such as Mg2+ or Mn2+) as cofactors to catalyze the hydrolysis of DNA. However, most of the structural work on endonucleases has been performed in the absence of metals, leaving unanswered questions about their mechanisms of DNA cleavage. Here we report structures of the endonuclease BamHI-DNA complex, determined in the presence of Mn2+ and Ca2+, that describe the enzyme at different stages of catalysis. Overall, the results support a two-metal mechanism of DNA cleavage for BamHI which is distinct from that of EcoRV.

The role of metals in catalysis by the restriction endonuclease BamHI.,Viadiu H, Aggarwal AK Nat Struct Biol. 1998 Oct;5(10):910-6. PMID:9783752<ref>PMID:9783752</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3bam" style="background-color:#fffaf0;"></div>

==See Also==
*[[BamHI|BamHI]]
*[[Endonuclease 3D structures|Endonuclease 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bacillus amyloliquefaciens]]
[[Category: Large Structures]]
[[Category: Aggarwal AK]]
[[Category: Viadiu H]]