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)

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 71.21 kDa 
• Atom Count: 5534 
• Modelled Residue Count: 648 
• Deposited Residue Count: 656 
• Unique protein chains: 1

1F1M

CRYSTAL STRUCTURE OF OUTER SURFACE PROTEIN C (OSPC)

• DOI: 10.2210/pdb1F1M/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Borreliella burgdorferi
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2000-05-19 Released: 2001-04-04 
• Deposition Author(s): Kumaran, D., Eswaramoorthy, S., Dunn, J.J., Swaminathan, S.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.235 
• R-Value Work: 0.201 
• R-Value Observed: 0.201 

Literature

Crystal structure of outer surface protein C (OspC) from the Lyme disease spirochete, Borrelia burgdorferi.

Kumaran, D., Eswaramoorthy, S., Luft, B.J., Koide, S., Dunn, J.J., Lawson, C.L., Swaminathan, S.

(2001) EMBO J 20: 971-978

• PubMed: 11230121 
• DOI: 10.1093/emboj/20.5.971
• Primary Citation of Related Structures:  
  1GGQ, 1F1M


• PubMed Abstract: 
  

Outer surface protein C (OspC) is a major antigen on the surface of the Lyme disease spirochete, Borrelia burgdorferi, when it is being transmitted to humans. Crystal structures of OspC have been determined for strains HB19 and B31 to 1.8 and 2.5 A resolution, respectively. The three-dimensional structure is predominantly helical. This is in contrast to the structure of OspA, a major surface protein mainly present when spirochetes are residing in the midgut of unfed ticks, which is mostly beta-sheet. The surface of OspC that would project away from the spirochete's membrane has a region of strong negative electrostatic potential which may be involved in binding to positively charged host ligands. This feature is present only on OspCs from strains known to cause invasive human disease.

---

Organizational Affiliation: 

Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
OUTER SURFACE PROTEIN C	A, B, C, D	164	Borreliella burgdorferi	Mutation(s): 1  Gene Names: ospC
UniProt
Find proteins for Q9AGB1 (Borrelia burgdorferi) Explore Q9AGB1  Go to UniProtKB:  Q9AGB1

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	E [auth A], F [auth B], G [auth B], H [auth C], I [auth D], J [auth D]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.235 
• R-Value Work: 0.201 
• R-Value Observed: 0.201 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.323	α = 90
b = 46.252	β = 99.08
c = 111.784	γ = 90

Software Package:

Software Name	Purpose
PHASES	phasing
SHARP	phasing
CNS	refinement
MARMAD	data reduction
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-05-19 
• Released Date: 2001-04-04 
Deposition Author(s): Kumaran, D., Eswaramoorthy, S., Dunn, J.J., Swaminathan, S.

Revision History  

• Version 1.0: 2001-04-04
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-04
  Changes: Refinement description