6JAS

Human serum transferrin with iron citrate bound

• PDB DOI: https://doi.org/10.2210/pdb6JAS/pdb

• Classification: METAL TRANSPORT
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2019-01-25 Released: 2020-01-29 
• Deposition Author(s): Wang, M., Wang, H., Sun, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.219 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 

Starting Model: experimental

Literature

Binding of ruthenium and osmium at non-iron sites of transferrin explains their iron-independent cellular uptake

Wang, M., Wang, H., Sun, H.

To be published.

Biological Assembly 1  

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

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 75.69 kDa 
• Atom Count: 5,144 
• Modelled Residue Count: 656 
• Deposited Residue Count: 679 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serotransferrin	A	679	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P02787 (Homo sapiens) Explore P02787  Go to UniProtKB:  P02787
PHAROS:  P02787 GTEx:  ENSG00000091513

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CIT	E [auth A]	CITRIC ACID C6 H8 O7 KRKNYBCHXYNGOX-UHFFFAOYSA-N
MLI	D [auth A]	MALONATE ION C3 H2 O4 OFOBLEOULBTSOW-UHFFFAOYSA-L
FE	B [auth A], C [auth A]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.219 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 136.567	α = 90
b = 157.153	β = 90
c = 107.265	γ = 90

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2020-01-29 
Deposition Author(s): Wang, M., Wang, H., Sun, H.

Revision History  

• Version 1.0: 2020-01-29
  Type: Initial release
  
• Version 1.1: 2023-11-22
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2024-11-13
  Changes: Structure summary