4KM6

Human folate receptor alpha (FOLR1) at acidic pH, orthorhombic form

• PDB DOI: https://doi.org/10.2210/pdb4KM6/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Cricetulus griseus
• Mutation(s): No 


• Deposited: 2013-05-08 Released: 2013-08-07 
• Deposition Author(s): Singh, M., Dann III, C.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.200 
• R-Value Work: 0.168 
• R-Value Observed: 0.171 

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 25.03 kDa 
• Atom Count: 1,836 
• Modelled Residue Count: 204 
• Deposited Residue Count: 208 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Folate receptor alpha	A	208	Homo sapiens	Mutation(s): 0  Gene Names: FOLR, FOLR1, FOLR2
UniProt & NIH Common Fund Data Resources
Find proteins for P15328 (Homo sapiens) Explore P15328  Go to UniProtKB:  P15328
PHAROS:  P15328 GTEx:  ENSG00000110195

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	C [auth A], D [auth A], E [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.200 
• R-Value Work: 0.168 
• R-Value Observed: 0.171 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.519	α = 90
b = 63.339	β = 90
c = 71.169	γ = 90

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
DENZO	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-08-07 
Deposition Author(s): Singh, M., Dann III, C.E.

Revision History  

• Version 1.0: 2013-08-07
  Type: Initial release
  
• Version 1.1: 2013-10-02
  Changes: Database references
• Version 1.2: 2017-11-15
  Changes: Refinement description
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Data collection, Database references, Derived calculations, Structure summary