3NKU

Crystal structure of the N-terminal domain of DrrA/SidM from Legionella pneumophila

• PDB DOI: https://doi.org/10.2210/pdb3NKU/pdb

• Classification: PROTEIN TRANSPORT
• Organism(s): Legionella pneumophila subsp. pneumophila str. Philadelphia 1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-06-21 Released: 2010-08-04 
• Deposition Author(s): Mueller, M.P., Peters, H., Blankenfeldt, W., Goody, R.S., Itzen, A.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.228 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 

Literature

The Legionella effector protein DrrA AMPylates the membrane traffic regulator Rab1b.

Muller, M.P., Peters, H., Blumer, J., Blankenfeldt, W., Goody, R.S., Itzen, A.

(2010) Science 329: 946-949

• PubMed: 20651120 
• DOI: https://doi.org/10.1126/science.1192276
• Primary Citation of Related Structures:  
  3NKU, 3NKV


• PubMed Abstract: 
  

  In the course of Legionnaires' disease, the bacterium Legionella pneumophila affects the intracellular vesicular trafficking of infected eukaryotic cells by recruiting the small guanosine triphosphatase (GTPase) Rab1 to the cytosolic face of the Legionella-containing vacuole. In order to accomplish this, the Legionella protein DrrA contains a specific guanine nucleotide exchange activity for Rab1 activation that exchanges guanosine triphosphate (GTP) for guanosine diphosphate on Rab1. We found that the amino-terminal domain of DrrA possesses adenosine monophosphorylation (AMPylation) activity toward the switch II region of Rab1b, leading to posttranslational covalent modification of tyrosine 77. AMPylation of switch II by DrrA restricts the access of GTPase activating proteins, thereby rendering Rab1b constitutively active.

---

Organizational Affiliation: 

Department of Physical Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, NRW, 44227, Germany.

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 49.36 kDa 
• Atom Count: 3,167 
• Modelled Residue Count: 376 
• Deposited Residue Count: 426 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DrrA	A, B	213	Legionella pneumophila subsp. pneumophila str. Philadelphia 1	Mutation(s): 0  Gene Names: DrrA EC: 2.7.7.108
UniProt
Find proteins for Q29ST3 (Legionella pneumophila) Explore Q29ST3  Go to UniProtKB:  Q29ST3

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PGE	D [auth A]	TRIETHYLENE GLYCOL C6 H14 O4 ZIBGPFATKBEMQZ-UHFFFAOYSA-N
PEG	C [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-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: 2.10 Å
• R-Value Free: 0.228 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 47.609	α = 90
b = 49.955	β = 90
c = 159.775	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-08-04 
Deposition Author(s): Mueller, M.P., Peters, H., Blankenfeldt, W., Goody, R.S., Itzen, A.

Revision History  

• Version 1.0: 2010-08-04
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2024-11-20
  Changes: Data collection, Database references, Derived calculations, Structure summary