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PDBsum entry 3flo
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protein ligands metals Protein-protein interface(s) links
Transferase PDB id
3flo

 

 

 

 

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JSmol PyMol  
Contents
Protein chains
433 a.a. *
180 a.a. *
Ligands
UNK-UNK-UNK ×4
SO4 ×65
Metals
_ZN ×8
Waters ×571
* Residue conservation analysis
PDB id:
3flo
Name: Transferase
Title: Crystal structure of the carboxyl-terminal domain of yeast DNA polymerase alpha in complex with its b subunit
Structure: DNA polymerase alpha subunit b. Chain: a, c, e, g. Fragment: unp residues 246-705. Synonym: DNA polymerase i subunit b, DNA polymerase alpha:primase complex p86 subunit, pol alpha-primase complex p86 subunit, DNA polymerase-primase complex p74 subunit. Engineered: yes. DNA polymerase alpha catalytic subunit a. Chain: i, j, k, l.
Source: Saccharomyces cerevisiae. Baker's yeast. Organism_taxid: 4932. Gene: pol12. Expressed in: escherichia coli. Expression_system_taxid: 562. Gene: pol1, cdc17.
Resolution:
2.50Å     R-factor:   0.192     R-free:   0.218
Authors: S.N.Klinge,L.Pellegrini
Key ref: S.Klinge et al. (2009). 3D architecture of DNA Pol alpha reveals the functional core of multi-subunit replicative polymerases. Embo J, 28, 1978-1987. PubMed id: 19494830
Date:
19-Dec-08     Release date:   09-Jun-09    
PROCHECK
Go to PROCHECK summary
 Headers
 References

Protein chains
Pfam   ArchSchema ?
P38121  (DPOA2_YEAST) -  DNA polymerase alpha subunit B from Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Seq:
Struc: 		 
Seq:
Struc: 		705 a.a.
433 a.a.
Protein chains
Pfam   ArchSchema ?
P13382  (DPOA_YEAST) -  DNA polymerase alpha catalytic subunit A from Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Seq:
Struc: 		 
Seq:
Struc: 		 
Seq:
Struc: 		1468 a.a.
180 a.a.
Key:    PfamA domain  Secondary structure  CATH domain

 Enzyme reactions 
   Enzyme class: Chains B, D, F, H: E.C.2.7.7.7  - DNA-directed Dna polymerase.
[IntEnz]   [ExPASy]   [KEGG]   [BRENDA]
      Reaction: DNA(n) + a 2'-deoxyribonucleoside 5'-triphosphate = DNA(n+1) + diphosphate
DNA(n)
 + 2'-deoxyribonucleoside 5'-triphosphate
 = DNA(n+1)
 + diphosphate
Molecule diagrams generated from .mol files obtained from the KEGG ftp site

 

 
    Added reference    
 
 
Embo J 28:1978-1987 (2009)
PubMed id: 19494830  
 
 
3D architecture of DNA Pol alpha reveals the functional core of multi-subunit replicative polymerases.
S.Klinge, R.Núñez-Ramírez, O.Llorca, L.Pellegrini.
 
  ABSTRACT  
 
Eukaryotic DNA replication requires the coordinated activity of the multi-subunit DNA polymerases: Pol alpha, Pol delta and Pol epsilon. The conserved catalytic and regulatory B subunits associate in a constitutive heterodimer that represents the functional core of all three replicative polymerases. Here, we combine X-ray crystallography and electron microscopy (EM) to describe subunit interaction and 3D architecture of heterodimeric yeast Pol alpha. The crystal structure of the C-terminal domain (CTD) of the catalytic subunit bound to the B subunit illustrates a conserved mechanism of accessory factor recruitment by replicative polymerases. The EM reconstructions of Pol alpha reveal a bilobal shape with separate catalytic and regulatory modules. Docking of the B-CTD complex in the EM reconstruction shows that the B subunit is tethered to the polymerase domain through a structured but flexible linker. Our combined findings provide a structural template for the common functional architecture of the three major replicative DNA polymerases.
 

Literature references that cite this PDB file's key reference

  PubMed id Reference
20163964 E.Johansson, and S.A.Macneill (2010).
The eukaryotic replicative DNA polymerases take shape.
  Trends Biochem Sci, 35, 339-347.  
19682465 Y.I.Pavlov, and P.V.Shcherbakova (2010).
DNA polymerases at the eukaryotic fork-20 years later.
  Mutat Res, 685, 45-53.  
19686603 J.Sanchez Garcia, A.G.Baranovskiy, E.V.Knatko, F.C.Gray, T.H.Tahirov, and S.A.MacNeill (2009).
Functional mapping of the fission yeast DNA polymerase delta B-subunit Cdc1 by site-directed and random pentapeptide insertion mutagenesis.
  BMC Mol Biol, 10, 82.  
19818796 R.Jain, M.Hammel, R.E.Johnson, L.Prakash, S.Prakash, and A.K.Aggarwal (2009).
Structural insights into yeast DNA polymerase delta by small angle X-ray scattering.
  J Mol Biol, 394, 377-382.  
19747370 R.Ohsawa, M.Adkins, and J.K.Tyler (2009).
Epigenetic inheritance of an inducibly nucleosome-depleted promoter and its associated transcriptional state in the apparent absence of transcriptional activators.
  Epigenetics Chromatin, 2, 11.  
The most recent references are shown first. Citation data come partly from CiteXplore and partly from an automated harvesting procedure. Note that this is likely to be only a partial list as not all journals are covered by either method. However, we are continually building up the citation data so more and more references will be included with time.

 

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