6E12

Crystal Structure of the Alr8543 protein in complex with Oleic Acid and magnesium ion from Nostoc sp. PCC 7120, Northeast Structural Genomics Consortium Target NsR141

• PDB DOI: https://doi.org/10.2210/pdb6E12/pdb
• Entry: 6E12 supersedes: 3KB4

• Classification: LIPID BINDING PROTEIN
• Organism(s): Nostoc sp. PCC 7120 = FACHB-418
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2018-07-09 Released: 2018-07-25 
• Deposition Author(s): Forouhar, F., Neely, H., Seetharaman, J., Xiao, R., Ciccosanti, C., Patel, D., Belote, R.L., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Tong, L., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)
• Funding Organization(s): National Institutes of Health/National Center for Research Resources (NIH/NCRR)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.199 
• R-Value Work: 0.172 
• R-Value Observed: 0.174 

Literature

Crystal Structure of the Alr8543 protein in complex with Oleic Acid and magnesium ion from Nostoc sp. PCC 7120, Northeast Structural Genomics Consortium Target NsR141

Forouhar, F., Neely, H., Seetharaman, J., Xiao, R., Ciccosanti, C., Patel, D., Belote, R.L., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Tong, L., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)

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)

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 8-mer - A8 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 52.76 kDa 
• Atom Count: 3,618 
• Modelled Residue Count: 422 
• Deposited Residue Count: 450 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alr8543 protein	A, B	225	Nostoc sp. PCC 7120 = FACHB-418	Mutation(s): 0  Gene Names: alr8543
UniProt
Find proteins for Q8YJY7 (Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)) Explore Q8YJY7  Go to UniProtKB:  Q8YJY7

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
OLA	C [auth A], D [auth B]	OLEIC ACID C18 H34 O2 ZQPPMHVWECSIRJ-KTKRTIGZSA-N
CL	G [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	E [auth B], F [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-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: 2.40 Å
• R-Value Free: 0.199 
• R-Value Work: 0.172 
• R-Value Observed: 0.174 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 113.308	α = 90
b = 112.918	β = 90
c = 167.766	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
SHELX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-07-25 
Deposition Author(s): Forouhar, F., Neely, H., Seetharaman, J., Xiao, R., Ciccosanti, C., Patel, D., Belote, R.L., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Tong, L., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)
• This entry supersedes: 3KB4

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Center for Research Resources (NIH/NCRR)	United States	P50 GM62413
National Institutes of Health/National Center for Research Resources (NIH/NCRR)	United States	U54 GM074958

Revision History  

• Version 1.0: 2018-07-25
  Type: Initial release
  
• Version 1.1: 2019-12-04
  Changes: Author supporting evidence
• Version 1.2: 2024-10-09
  Changes: Data collection, Database references, Derived calculations, Structure summary