|
|
| (14 intermediate revisions not shown.) |
| Line 1: |
Line 1: |
| - | [[Image:1iaw.gif|left|200px]]<br /><applet load="1iaw" size="350" color="white" frame="true" align="right" spinBox="true" | |
| - | caption="1iaw, resolution 2.4Å" /> | |
| - | '''CRYSTAL STRUCTURE OF NAEI COMPLEXED WITH 17MER DNA'''<br /> | |
| | | | |
| - | ==Overview== | + | ==CRYSTAL STRUCTURE OF NAEI COMPLEXED WITH 17MER DNA== |
| - | NaeI, a novel DNA endonuclease, shows topoisomerase and recombinase activities when a Lys residue is substituted for Leu 43. The NaeI-DNA structure demonstrates that each of the two domains of NaeI recognizes one molecule of DNA duplex. DNA recognition induces dramatic rearrangements: narrowing the binding site of the Topo domain 16 A to grip DNA, widening that of the Endo domain 8 A to encircle and bend DNA 45 degrees for cleavage, and completely rebuilding the homodimer interface. The NaeI-DNA structure presents the first example of novel recognition of two copies of one DNA sequence by two different amino acid sequences and two different structural motifs in one polypeptide.
| + | <StructureSection load='1iaw' size='340' side='right'caption='[[1iaw]], [[Resolution|resolution]] 2.40Å' scene=''> |
| | + | == Structural highlights == |
| | + | <table><tr><td colspan='2'>[[1iaw]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Lentzea_aerocolonigenes Lentzea aerocolonigenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IAW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IAW 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]] 2.4Å</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=1iaw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1iaw OCA], [https://pdbe.org/1iaw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1iaw RCSB], [https://www.ebi.ac.uk/pdbsum/1iaw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1iaw ProSAT]</span></td></tr> |
| | + | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/T2N1_LENAE T2N1_LENAE] An E and P subtype restriction enzyme that recognizes the double-stranded unmethylated sequence 5'-GCCGGC-3' and cleaves after C-3.<ref>PMID:7892605</ref> <ref>PMID:8932368</ref> <ref>PMID:12654995</ref> |
| | | | |
| - | ==About this Structure== | + | ==See Also== |
| - | 1IAW is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Lechevalieria_aerocolonigenes Lechevalieria aerocolonigenes]. 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://oca.weizmann.ac.il/oca-bin/ocashort?id=1IAW OCA].
| + | *[[Endonuclease 3D structures|Endonuclease 3D structures]] |
| - | | + | == References == |
| - | ==Reference== | + | <references/> |
| - | Structure of NaeI-DNA complex reveals dual-mode DNA recognition and complete dimer rearrangement., Huai Q, Colandene JD, Topal MD, Ke H, Nat Struct Biol. 2001 Aug;8(8):665-9. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11473254 11473254]
| + | __TOC__ |
| - | [[Category: Lechevalieria aerocolonigenes]] | + | </StructureSection> |
| - | [[Category: Single protein]] | + | [[Category: Large Structures]] |
| - | [[Category: Type II site-specific deoxyribonuclease]]
| + | [[Category: Lentzea aerocolonigenes]] |
| - | [[Category: Colandene, J D.]] | + | [[Category: Colandene JD]] |
| - | [[Category: Huai, Q.]] | + | [[Category: Huai Q]] |
| - | [[Category: Ke, H.]] | + | [[Category: Ke H]] |
| - | [[Category: Topal, M D.]] | + | [[Category: Topal MD]] |
| - | [[Category: protein-dna complex]]
| + | |
| - | | + | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:09:53 2008''
| + | |
| Structural highlights
Function
T2N1_LENAE An E and P subtype restriction enzyme that recognizes the double-stranded unmethylated sequence 5'-GCCGGC-3' and cleaves after C-3.[1] [2] [3]
See Also
References
- ↑ Jo K, Topal MD. DNA topoisomerase and recombinase activities in Nae I restriction endonuclease. Science. 1995 Mar 24;267(5205):1817-20. doi: 10.1126/science.7892605. PMID:7892605 doi:http://dx.doi.org/10.1126/science.7892605
- ↑ Jo K, Topal MD. Effects on NaeI-DNA recognition of the leucine to lysine substitution that transforms restriction endonuclease NaeI to a topoisomerase: a model for restriction endonuclease evolution. Nucleic Acids Res. 1996 Nov 1;24(21):4171-5. doi: 10.1093/nar/24.21.4171. PMID:8932368 doi:http://dx.doi.org/10.1093/nar/24.21.4171
- ↑ Roberts RJ, Belfort M, Bestor T, Bhagwat AS, Bickle TA, Bitinaite J, Blumenthal RM, Degtyarev SKh, Dryden DT, Dybvig K, Firman K, Gromova ES, Gumport RI, Halford SE, Hattman S, Heitman J, Hornby DP, Janulaitis A, Jeltsch A, Josephsen J, Kiss A, Klaenhammer TR, Kobayashi I, Kong H, Kruger DH, Lacks S, Marinus MG, Miyahara M, Morgan RD, Murray NE, Nagaraja V, Piekarowicz A, Pingoud A, Raleigh E, Rao DN, Reich N, Repin VE, Selker EU, Shaw PC, Stein DC, Stoddard BL, Szybalski W, Trautner TA, Van Etten JL, Vitor JM, Wilson GG, Xu SY. A nomenclature for restriction enzymes, DNA methyltransferases, homing endonucleases and their genes. Nucleic Acids Res. 2003 Apr 1;31(7):1805-12. PMID:12654995
|
