1GAJ

CRYSTAL STRUCTURE OF A NUCLEOTIDE-FREE ATP-BINDING CASSETTE FROM AN ABC TRANSPORTER

• PDB DOI: https://doi.org/10.2210/pdb1GAJ/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Methanocaldococcus jannaschii
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-11-30 Released: 2001-07-18 
• Deposition Author(s): Karpowich, N., Yuan, Y.-R., Dai, P.L., Martsinkevich, O., Millen, L., Thomas, P.J., Hunt, J.F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.243 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 

Literature

Crystal structures of the MJ1267 ATP binding cassette reveal an induced-fit effect at the ATPase active site of an ABC transporter.

Karpowich, N., Martsinkevich, O., Millen, L., Yuan, Y.R., Dai, P.L., MacVey, K., Thomas, P.J., Hunt, J.F.

(2001) Structure 9: 571-586

• PubMed: 11470432 
• DOI: https://doi.org/10.1016/s0969-2126(01)00617-7
• Primary Citation of Related Structures:  
  1G6H, 1GAJ


• PubMed Abstract: 
  

  ATP binding cassette (ABC) transporters are ubiquitously distributed transmembrane solute pumps that play a causative role in numerous diseases. Previous structures have defined the fold of the ABC and established the flexibility of its alpha-helical subdomain. But the nature of the mechanical changes that occur at each step of the chemical ATPase cycle have not been defined.

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Organizational Affiliation: 

Department of Biological Sciences, 702A Fairchild Center, MC2434, Columbia University, New York, NY 10027, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Octahedral - O  (Explore in 3D)
Global Stoichiometry: Homo 24-mer - A24 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 29.63 kDa 
• Atom Count: 2,171 
• Modelled Residue Count: 253 
• Deposited Residue Count: 257 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HIGH-AFFINITY BRANCHED CHAIN AMINO ACID TRANSPORT ATP-BINDING PROTEIN	A	257	Methanocaldococcus jannaschii	Mutation(s): 0
UniProt
Find proteins for Q58663 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440)) Explore Q58663  Go to UniProtKB:  Q58663

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PEG	H [auth A], I [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
TBU	E [auth A], F [auth A], G [auth A]	TERTIARY-BUTYL ALCOHOL C4 H10 O DKGAVHZHDRPRBM-UHFFFAOYSA-N
CL	C [auth A], D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.243 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 
• Space Group: P 4 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 137.52	α = 90
b = 137.52	β = 90
c = 137.52	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-07-18 
Deposition Author(s): Karpowich, N., Yuan, Y.-R., Dai, P.L., Martsinkevich, O., Millen, L., Thomas, P.J., Hunt, J.F.

Revision History  

• Version 1.0: 2001-07-18
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations