1knv: Difference between revisions

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New page: left|200px<br /><applet load="1knv" size="450" color="white" frame="true" align="right" spinBox="true" caption="1knv, resolution 2.17Å" /> '''Bse634I restriction ...
 
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[[Image:1knv.gif|left|200px]]<br /><applet load="1knv" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1knv, resolution 2.17&Aring;" />
'''Bse634I restriction endonuclease'''<br />


==Overview==
==Bse634I restriction endonuclease==
Crystal structures of Type II restriction endonucleases demonstrate a, conserved common core and active site residues but diverse structural, elements involved in DNA sequence discrimination. Comparative structural, analysis of restriction enzymes recognizing the same nucleotide sequence, might therefore contribute to our understanding of the structural, diversity of specificity determinants within restriction enzymes. We have, solved the crystal structure of the Bacillus stearothermophilus, restriction endonuclease Bse634I by the multiple isomorphous replacement, technique to 2.17 A resolution. Bse634I is an isoschisomer of the Cfr10I, restriction enzyme whose crystal structure has been reported previously., Comparative structural analysis of the first pair of isoschisomeric, enzymes revealed conserved structural determinants of sequence recognition, and catalysis. However, conformations of the N-terminal subdomains, differed between Bse634I/Cfr10I, suggesting a rigid body movement that, might couple DNA recognition and catalysis. Structural similarities extend, to the quaternary structure level: crystal contacts suggest that Bse634I, similarly to Cfr10I is arranged as a tetramer. Kinetic analysis reveals, that Bse634I is able to interact simultaneously with two recognition sites, supporting the tetrameric architecture of the protein. Thus, restriction, enzymes Bse634I, Cfr10I and NgoMIV, recognizing overlapping nucleotide, sequences, exhibit a conserved tetrameric architecture that is of, functional importance.
<StructureSection load='1knv' size='340' side='right'caption='[[1knv]], [[Resolution|resolution]] 2.17&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1knv]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KNV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KNV 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]] 2.17&#8491;</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=CL:CHLORIDE+ION'>CL</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=1knv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1knv OCA], [https://pdbe.org/1knv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1knv RCSB], [https://www.ebi.ac.uk/pdbsum/1knv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1knv ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q8RT53_GEOSE Q8RT53_GEOSE]


==About this Structure==
==See Also==
1KNV is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus] with ACT and CL as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Type_II_site-specific_deoxyribonuclease Type II site-specific deoxyribonuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.21.4 3.1.21.4] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1KNV OCA].
*[[Endonuclease 3D structures|Endonuclease 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
Crystal structure of the Bse634I restriction endonuclease: comparison of two enzymes recognizing the same DNA sequence., Grazulis S, Deibert M, Rimseliene R, Skirgaila R, Sasnauskas G, Lagunavicius A, Repin V, Urbanke C, Huber R, Siksnys V, Nucleic Acids Res. 2002 Feb 15;30(4):876-85. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11842098 11842098]
[[Category: Geobacillus stearothermophilus]]
[[Category: Geobacillus stearothermophilus]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Type II site-specific deoxyribonuclease]]
[[Category: Deibert M]]
[[Category: Deibert, M.]]
[[Category: Grazulis S]]
[[Category: Grazulis, S.]]
[[Category: Huber R]]
[[Category: Huber, R.]]
[[Category: Lagunavicius A]]
[[Category: Lagunavicius, A.]]
[[Category: Repin V]]
[[Category: Repin, V.]]
[[Category: Rimseliene R]]
[[Category: Rimseliene, R.]]
[[Category: Sasnauskas G]]
[[Category: Sasnauskas, G.]]
[[Category: Siksnys V]]
[[Category: Siksnys, V.]]
[[Category: Skirgaila R]]
[[Category: Skirgaila, R.]]
[[Category: Urbanke C]]
[[Category: Urbanke, C.]]
[[Category: ACT]]
[[Category: CL]]
[[Category: apo-enzyme]]
[[Category: restriction endonuclease]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Sun Nov 25 01:37:45 2007''

Latest revision as of 16:25, 13 March 2024

Bse634I restriction endonucleaseBse634I restriction endonuclease

Structural highlights

1knv is a 2 chain structure with sequence from Geobacillus stearothermophilus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.17Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q8RT53_GEOSE

See Also

1knv, resolution 2.17Å

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