Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 63.61 kDa 
• Atom Count: 4395 
• Residue Count: 522 
• Unique protein chains: 1

5HTF

Crystal Structure of PrsA1 from Listeria monocytogenes

• DOI: 10.2210/pdb5HTF/pdb

• Classification: CHAPERONE
• Organism(s): Listeria monocytogenes EGD-e
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2016-01-26 Released: 2016-04-06 
• Deposition Author(s): Prehna, G., Cahoon, L.A., Freitag, N.E.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.234 
• R-Value Work: 0.198 
• R-Value Observed: 0.200 

Literature

A structural comparison of Listeria monocytogenes protein chaperones PrsA1 and PrsA2 reveals molecular features required for virulence.

Cahoon, L.A., Freitag, N.E., Prehna, G.

(2016) Mol Microbiol 101: 42-61

• PubMed: 27007641 
• DOI: 10.1111/mmi.13367
• Primary Citation of Related Structures:  
  5HTF


• PubMed Abstract: 
  

Listeria monocytogenes is a Gram-positive environmental bacterium that lives within soil but transitions into a pathogen upon contact with a mammalian host. The transition of L. monocytogenes from soil dweller to cytosolic pathogen is dependent upon secreted virulence factors that mediate cell invasion and intracellular growth. PrsA1 and PrsA2 are secreted bacterial lipoprotein chaperones that contribute to the folding of proteins translocated across the bacterial membrane; PrsA2 is required for L. monocytogenes virulence, whereas the function of PrsA1 remains to be determined. We have solved an X-ray crystal structure of PrsA1 and have used this model to guide comparison structure-based mutagenesis studies with PrsA2. Targeted mutagenesis of PrsA2 demonstrates that oligomerization of PrsA2 as well as molecular features of the foldase domain are required for protein secretion and virulence, whereas a functional role was uncovered for PrsA1 in bacterial resistance to alcohol. Interestingly, PrsA2 membrane localization is not required for all PrsA2-dependent activities, suggesting that the lipoprotein retains function when released from the bacterial cell. PrsA chaperones are thus multifaceted proteins with distinct domains adapted to accommodate the functional needs of a diverse array of secreted substrates.

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Organizational Affiliation: 

Center for Structural Biology, Research Resources Center, University of Illinois at Chicago, Chicago, IL.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Foldase protein PrsA 1	A, B	283	Listeria monocytogenes EGD-e	Mutation(s): 0  Gene Names: prsA1, lmo1444 EC: 5.2.1.8
Find proteins for Q8Y759 (Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e)) Explore Q8Y759  Go to UniProtKB:  Q8Y759

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MPD	A	(4S)-2-METHYL-2,4-PENTANEDIOL C6 H14 O2 SVTBMSDMJJWYQN-YFKPBYRVSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.234 
• R-Value Work: 0.198 
• R-Value Observed: 0.200 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.31	α = 90
b = 84.03	β = 90
c = 114.77	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
autoSHARP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2016-01-26 
• Released Date: 2016-04-06 
Deposition Author(s): Prehna, G., Cahoon, L.A., Freitag, N.E.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	R01 AI083241
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI083241-03S1

Revision History 

• Version 1.0: 2016-04-06
  Type: Initial release
  
• Version 1.1: 2016-07-06
  Changes: Data collection
• Version 1.2: 2016-07-13
  Changes: Database references
• Version 1.3: 2017-09-13
  Changes: Author supporting evidence, Database references, Derived calculations
• Version 1.4: 2019-12-11
  Changes: Author supporting evidence