5L0Z | pdb_00005l0z

Crystal Structure of AdoMet bound rRNA methyltransferase from Sinorhizobium meliloti

• PDB DOI: https://doi.org/10.2210/pdb5L0Z/pdb

• Classification: TRANSFERASE
• Organism(s): Sinorhizobium meliloti 1021
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2016-07-28 Released: 2017-08-02 
• Deposition Author(s): Dey, D., Hegde, R.P., Almo, S.C., Ramakumar, S., Ramagopal, U.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 
  0.265 (Depositor), 0.261 (DCC) 
• R-Value Work: 
  0.191 (Depositor), 0.195 (DCC) 
• R-Value Observed: 
  0.194 (Depositor) 

Literature

Crystal Structure of AdoMet bound rRNA methyltransferase from Sinorhizobium meliloti

Dey, D., Hegde, R.P., Almo, S.C., Ramakumar, S., Ramagopal, U.A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 64.36 kDa 
• Atom Count: 4,035 
• Modelled Residue Count: 523 
• Deposited Residue Count: 576 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Probable RNA methyltransferase, TrmH family	A, B	288	Sinorhizobium meliloti 1021	Mutation(s): 0  Gene Names: SMc01130 EC: 2.1.1
UniProt
Find proteins for Q92SJ4 (Rhizobium meliloti (strain 1021)) Explore Q92SJ4  Go to UniProtKB:  Q92SJ4

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAM	F [auth A], J [auth B]	S-ADENOSYLMETHIONINE C15 H22 N6 O5 S MEFKEPWMEQBLKI-FCKMPRQPSA-N
SO4	E [auth A], I [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CO	C [auth A], D [auth A], G [auth B], H [auth B]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free:  0.265 (Depositor), 0.261 (DCC) 
• R-Value Work:  0.191 (Depositor), 0.195 (DCC) 
• R-Value Observed: 0.194 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.855	α = 90
b = 82.896	β = 90
c = 108.806	γ = 90

Software Package:

Software Name	Purpose
HKL-3000	data processing
HKL-3000	data scaling
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-08-02 
Deposition Author(s): Dey, D., Hegde, R.P., Almo, S.C., Ramakumar, S., Ramagopal, U.A.

Revision History  

• Version 1.0: 2017-08-02
  Type: Initial release
  
• Version 1.1: 2019-11-20
  Changes: Derived calculations
• Version 1.2: 2024-10-16
  Changes: Data collection, Database references, Derived calculations, Structure summary