5itu

From Proteopedia

(Difference between revisions)

Revision as of 07:31, 3 June 2020

Crystal Structure of Human NEIL1(242K) bound to duplex DNA containing THF

Structural highlights

5itu is a 9 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	5itx, 5ity, 5itq, 5itr, 5itt
Gene:	NEIL1 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[NEIL1_HUMAN] Involved in base excision repair of DNA damaged by oxidation or by mutagenic agents. Acts as DNA glycosylase that recognizes and removes damaged bases. Has a preference for oxidized pyrimidines, such as thymine glycol, formamidopyrimidine (Fapy) and 5-hydroxyuracil. Has marginal activity towards 8-oxoguanine. Has AP (apurinic/apyrimidinic) lyase activity and introduces nicks in the DNA strand. Cleaves the DNA backbone by beta-delta elimination to generate a single-strand break at the site of the removed base with both 3'- and 5'-phosphates. Has DNA glycosylase/lyase activity towards mismatched uracil and thymine, in particular in U:C and T:C mismatches.^[1] ^[2] ^[3] ^[4]

Publication Abstract from PubMed

NEIL1 (Nei-like 1) is a DNA repair glycosylase guarding the mammalian genome against oxidized DNA bases. As the first enzymes in the base-excision repair pathway, glycosylases must recognize the cognate substrates and catalyze their excision. Here we present crystal structures of human NEIL1 bound to a range of duplex DNA. Together with computational and biochemical analyses, our results suggest that NEIL1 promotes tautomerization of thymine glycol (Tg)-a preferred substrate-for optimal binding in its active site. Moreover, this tautomerization event also facilitates NEIL1-catalyzed Tg excision. To our knowledge, the present example represents the first documented case of enzyme-promoted tautomerization for efficient substrate recognition and catalysis in an enzyme-catalyzed reaction.

Tautomerization-dependent recognition and excision of oxidation damage in base-excision DNA repair.,Zhu C, Lu L, Zhang J, Yue Z, Song J, Zong S, Liu M, Stovicek O, Gao YQ, Yi C Proc Natl Acad Sci U S A. 2016 Jul 12;113(28):7792-7. doi:, 10.1073/pnas.1604591113. Epub 2016 Jun 27. PMID:27354518^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Takao M, Kanno S, Kobayashi K, Zhang QM, Yonei S, van der Horst GT, Yasui A. A back-up glycosylase in Nth1 knock-out mice is a functional Nei (endonuclease VIII) homologue. J Biol Chem. 2002 Nov 1;277(44):42205-13. Epub 2002 Aug 27. PMID:12200441 doi:http://dx.doi.org/10.1074/jbc.M206884200
↑ Bandaru V, Sunkara S, Wallace SS, Bond JP. A novel human DNA glycosylase that removes oxidative DNA damage and is homologous to Escherichia coli endonuclease VIII. DNA Repair (Amst). 2002 Jul 17;1(7):517-29. PMID:12509226
↑ Hazra TK, Izumi T, Boldogh I, Imhoff B, Kow YW, Jaruga P, Dizdaroglu M, Mitra S. Identification and characterization of a human DNA glycosylase for repair of modified bases in oxidatively damaged DNA. Proc Natl Acad Sci U S A. 2002 Mar 19;99(6):3523-8. PMID:11904416 doi:http://dx.doi.org/10.1073/pnas.062053799
↑ Dou H, Mitra S, Hazra TK. Repair of oxidized bases in DNA bubble structures by human DNA glycosylases NEIL1 and NEIL2. J Biol Chem. 2003 Dec 12;278(50):49679-84. Epub 2003 Sep 30. PMID:14522990 doi:http://dx.doi.org/10.1074/jbc.M308658200
↑ Zhu C, Lu L, Zhang J, Yue Z, Song J, Zong S, Liu M, Stovicek O, Gao YQ, Yi C. Tautomerization-dependent recognition and excision of oxidation damage in base-excision DNA repair. Proc Natl Acad Sci U S A. 2016 Jul 12;113(28):7792-7. doi:, 10.1073/pnas.1604591113. Epub 2016 Jun 27. PMID:27354518 doi:http://dx.doi.org/10.1073/pnas.1604591113

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5itu"

@@ Line 1: / Line 1: @@
 ==Crystal Structure of Human NEIL1(242K) bound to duplex DNA containing THF==
-<StructureSection load='5itu' size='340' side='right' caption='[[5itu]], [[Resolution|resolution]] 2.41&Aring;' scene=''>
+<StructureSection load='5itu' size='340' side='right'caption='[[5itu]], [[Resolution|resolution]] 2.41&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5itu]] is a 9 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5ITU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5ITU FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5itu]] is a 9 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=5ITU OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5ITU FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5itx|5itx]], [[5ity|5ity]], [[5itq|5itq]], [[5itr|5itr]], [[5itt|5itt]]</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5itu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5itu OCA], [http://pdbe.org/5itu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5itu RCSB], [http://www.ebi.ac.uk/pdbsum/5itu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5itu ProSAT]</span></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NEIL1 ([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=5itu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5itu OCA], [http://pdbe.org/5itu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5itu RCSB], [http://www.ebi.ac.uk/pdbsum/5itu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5itu ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 22: / Line 23: @@
 __TOC__
 </StructureSection>
+[[Category: Human]]
+[[Category: Large Structures]]
 [[Category: Gao, Y]]
 [[Category: Liu, M]]

5itu

From Proteopedia

Revision as of 07:31, 3 June 2020

Crystal Structure of Human NEIL1(242K) bound to duplex DNA containing THF

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox