Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 148713.11 
• Atom Count: 10353 
• Residue Count: 1282 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

1N35

lambda3 elongation complex with four phosphodiester bond formed

• DOI: 10.2210/pdb1N35/pdb
• NDB: PR0087

• Classification: TRANSFERASE/RNA
• Organism(s): Reovirus type 3 (strain Dearing)
• Expression System: Spodoptera frugiperda


• Deposited: 2002-10-25 Released: 2002-12-25 
• Deposition Author(s): Tao, Y., Farsetta, D.L., Nibert, M.L., Harrison, S.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Free: 0.259 
• R-Value Work: 0.207 

Literature

RNA Synthesis in a Cage--Structural Studies of Reovirus Polymerase [lambda] 3

Tao, Y., Farsetta, D.L., Nibert, M.L., Harrison, S.C.

(2002) Cell 111: 733-745

• PubMed: 12464184 
• Primary Citation of Related Structures:  
  1N38, 1N1H, 1MWH, 1MUK


• PubMed Abstract: 
  

The reovirus polymerase and those of other dsRNA viruses function within the confines of a protein capsid to transcribe the tightly packed dsRNA genome segments. The crystal structure of the reovirus polymerase, lambda3, determined at 2.5 A resolution, shows a fingers-palm-thumb core, similar to those of other viral polymerases, surrounded by major N- and C-terminal elaborations, which create a cage-like structure, with four channels leading to the catalytic site. This "caged" polymerase has allowed us to visualize the results of several rounds of RNA polymerization directly in the crystals. A 5' cap binding site on the surface of lambda3 suggests a template retention mechanism by which attachment of the 5' end of the plus-sense strand facilitates insertion of the 3' end of the minus-sense strand into the template channel.

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Organizational Affiliation: 

Howard Hughes Medical Institute, Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
Minor core protein lambda 3	A	1267	Reovirus type 3 (strain Dearing)	Mutation(s): 0  Gene Names: L1 EC: 2.7.7.48
Find proteins for P0CK31 (Reovirus type 3 (strain Dearing)) Go to UniProtKB:  P0CK31

Entity ID: 1
Molecule	Chains	Length	Organism
5'-R(P*GP*GP*GP*GP*G)-3'	B	5	N/A

Entity ID: 2
Molecule	Chains	Length	Organism
5'-R(*AP*UP*UP*AP*GP*CP*CP*CP*CP*C)-3'	C	10	N/A

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
MN	A	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N
CH1	A	3'-DEOXY-CYTIDINE-5'-TRIPHOSPHATE C9 H16 N3 O13 P3 CHKFLBOLYREYDO-SHYZEUOFSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Free: 0.259 
• R-Value Work: 0.207 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 70.883	α = 90.00
b = 85.013	β = 90.00
c = 249.294	γ = 90.00

Software Package:

Software Name	Purpose
CNS	phasing
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-10-25 
• Released Date: 2002-12-25 
• Deposition Author(s): Tao, Y., Farsetta, D.L., Nibert, M.L., Harrison, S.C.

Revision History 

• Version 1.0: 2002-12-25
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance