4AMS

A Megaviridae ORFan gene encode a new nucleotidyl transferase

• PDB DOI: https://doi.org/10.2210/pdb4AMS/pdb

• Classification: TRANSFERASE
• Organism(s): Megavirus chiliensis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-03-13 Released: 2013-03-20 
• Deposition Author(s): Lartigue, A., Claverie, J.M., Priet, S., Abergel, C.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.247 
• R-Value Work: 0.211 
• R-Value Observed: 0.213 

Starting Model: experimental

Literature

A Megaviridae Orphan Gene Encodes a New Nucleotidyl Transferase

Ciaccafava, A., Lartigue, A., Mansuelle, P., Jeudy, S., Abergel, C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 46.21 kDa 
• Atom Count: 3,174 
• Modelled Residue Count: 367 
• Deposited Residue Count: 390 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MG662	A	390	Megavirus chiliensis	Mutation(s): 0
UniProt
Find proteins for G5CQN7 (Megavirus chiliensis) Explore G5CQN7  Go to UniProtKB:  G5CQN7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG	B [auth A], C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.247 
• R-Value Work: 0.211 
• R-Value Observed: 0.213 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 100.632	α = 90
b = 100.632	β = 90
c = 168.822	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling
CaspR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-03-20 
Deposition Author(s): Lartigue, A., Claverie, J.M., Priet, S., Abergel, C.

Revision History  

• Version 1.0: 2013-03-20
  Type: Initial release
  
• Version 1.1: 2017-07-12
  Changes: Refinement description
• Version 1.2: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description