1sl2: Difference between revisions

Revision as of 15:06, 20 March 2008

, resolution 2.30Å

Ligands:

and

Gene:

5 (Bacteriophage T7), TRXA, TSNC, FIPA, B3781, C4701, Z5291, ECS4714, STM3915, STMD1.75, STY3639, T3381, SF3854, S3905 (Escherichia coli)

Activity:

DNA-directed DNA polymerase, with EC number 2.7.7.7

Coordinates:

save as pdb, mmCIF, xml

Ternary 5' complex of T7 DNA polymerase with a DNA primer/template containing a cis-syn thymine dimer on the template and an incoming nucleotide

OverviewOverview

Ultraviolet-induced DNA damage poses a lethal block to replication. To understand the structural basis for this, we determined crystal structures of a replicative DNA polymerase from bacteriophage T7 in complex with nucleotide substrates and a DNA template containing a cis-syn cyclobutane pyrimidine dimer (CPD). When the 3' thymine is the templating base, the CPD is rotated out of the polymerase active site and the fingers subdomain adopts an open orientation. When the 5' thymine is the templating base, the CPD lies within the polymerase active site where it base-pairs with the incoming nucleotide and the 3' base of the primer, while the fingers are in a closed conformation. These structures reveal the basis for the strong block of DNA replication that is caused by this photolesion.

About this StructureAbout this Structure

1SL2 is a Protein complex structure of sequences from Bacteriophage t7 and Escherichia coli. The following page contains interesting information on the relation of 1SL2 with [Thymine Dimers]. Full crystallographic information is available from OCA.

ReferenceReference

Nucleotide insertion opposite a cis-syn thymine dimer by a replicative DNA polymerase from bacteriophage T7., Li Y, Dutta S, Doublie S, Bdour HM, Taylor JS, Ellenberger T, Nat Struct Mol Biol. 2004 Aug;11(8):784-90. Epub 2004 Jul 4. PMID:15235589

Page seeded by OCA on Thu Mar 20 14:06:19 2008

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 1: / Line 1: @@
-[[Image:1sl2.gif|left|200px]]<br /><applet load="1sl2" size="350" color="white" frame="true" align="right" spinBox="true"
+[[Image:1sl2.gif|left|200px]]
-caption="1sl2, resolution 2.30&Aring;" />
-'''Ternary 5' complex of T7 DNA polymerase with a DNA primer/template containing a cis-syn thymine dimer on the template and an incoming nucleotide'''<br />
+ {{Structure
+|PDB= 1sl2 |SIZE=350|CAPTION= <scene name='initialview01'>1sl2</scene>, resolution 2.30&Aring;
+|SITE=
+|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> and <scene name='pdbligand=DAD:2',3'-DIDEOXYADENOSINE-5'-TRIPHOSPHATE'>DAD</scene>
+|ACTIVITY= [http://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.7 2.7.7.7]
+|GENE= 5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id= Bacteriophage T7]), TRXA, TSNC, FIPA, B3781, C4701, Z5291, ECS4714, STM3915, STMD1.75, STY3639, T3381, SF3854, S3905 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])
+}}
+'''Ternary 5' complex of T7 DNA polymerase with a DNA primer/template containing a cis-syn thymine dimer on the template and an incoming nucleotide'''
 ==Overview==
@@ Line 7: / Line 16: @@
 ==About this Structure==
-SL2 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Bacteriophage_t7 Bacteriophage t7] and [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=DAD:'>DAD</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. The following page contains interesting information on the relation of 1SL2 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb91_1.html Thymine Dimers]]. Active as [http://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.7 2.7.7.7] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SL2 OCA].
+SL2 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Bacteriophage_t7 Bacteriophage t7] and [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The following page contains interesting information on the relation of 1SL2 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb91_1.html Thymine Dimers]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SL2 OCA].
 ==Reference==
-Nucleotide insertion opposite a cis-syn thymine dimer by a replicative DNA polymerase from bacteriophage T7., Li Y, Dutta S, Doublie S, Bdour HM, Taylor JS, Ellenberger T, Nat Struct Mol Biol. 2004 Aug;11(8):784-90. Epub 2004 Jul 4. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15235589 15235589]
+Nucleotide insertion opposite a cis-syn thymine dimer by a replicative DNA polymerase from bacteriophage T7., Li Y, Dutta S, Doublie S, Bdour HM, Taylor JS, Ellenberger T, Nat Struct Mol Biol. 2004 Aug;11(8):784-90. Epub 2004 Jul 4. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15235589 15235589]
 [[Category: Bacteriophage t7]]
 [[Category: DNA-directed DNA polymerase]]
@@ Line 31: / Line 40: @@
 [[Category: thymine dimer]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:02:37 2008''
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:06:19 2008''