4X30

Crystal structure of human Thyroxine-binding globulin complexed with thyroine at 1.55 Angstrom resolution

• PDB DOI: https://doi.org/10.2210/pdb4X30/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-11-27 Released: 2015-12-02 
• Deposition Author(s): Qi, X.
• Funding Organization(s): National Natural Science Foundation of China, nsfc

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 
  0.205 (Depositor), 0.210 (DCC) 
• R-Value Work: 
  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 
  0.184 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of human Thyroxine-binding globulin complexed with thyroine at 1.55 Angstrom resolution

Qi, X., Zhou, A.

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)

Macromolecule Content

• Total Structure Weight: 45.21 kDa 
• Atom Count: 3,443 
• Modelled Residue Count: 372 
• Deposited Residue Count: 395 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Thyroxine-binding globulin	A	395	Homo sapiens	Mutation(s): 0  Gene Names: SERPINA7, TBG
UniProt & NIH Common Fund Data Resources
Find proteins for P05543 (Homo sapiens) Explore P05543  Go to UniProtKB:  P05543
PHAROS:  P05543 GTEx:  ENSG00000123561

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
T44	B [auth A]	3,5,3',5'-TETRAIODO-L-THYRONINE C15 H11 I4 N O4 XUIIKFGFIJCVMT-LBPRGKRZSA-N
GOL	C [auth A], D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
EDO	F [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
NA	G [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N
F	E [auth A]	FLUORIDE ION F KRHYYFGTRYWZRS-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free:  0.205 (Depositor), 0.210 (DCC) 
• R-Value Work:  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 0.184 (Depositor) 

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.46	α = 90
b = 65.46	β = 90
c = 202.71	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Coot	model building
MOSFLM	data processing
PHASER	phasing
SCALA	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2015-12-02 
Deposition Author(s): Qi, X.

---

Funding Organization	Location	Grant Number
National Natural Science Foundation of China	China	31170724
nsfc	China	31370727

Revision History  

• Version 1.0: 2015-12-02
  Type: Initial release
  
• Version 1.1: 2017-10-18
  Changes: Author supporting evidence, Database references, Derived calculations
• Version 1.2: 2023-11-08
  Changes: Data collection, Database references, Refinement description
• Version 2.0: 2023-11-15
  Changes: Atomic model, Data collection