6I4V | pdb_00006i4v

Alpha-1-antitrypsin Queen's (K154N) variant

• PDB DOI: https://doi.org/10.2210/pdb6I4V/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli K-12
• Mutation(s): Yes 


• Deposited: 2018-11-12 Released: 2019-11-20 
• Deposition Author(s): Aldobiyan, I., Lomas, D.A., Irving, J.A.
• Funding Organization(s): Medical Research Council (United Kingdom), Other government

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.78 Å
• R-Value Free: 
  0.213 (Depositor), 0.220 (DCC) 
• R-Value Work: 
  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 
  0.185 (Depositor) 

Starting Model: experimental

Literature

Structural determinants of instability in alpha-1-antitrypsin

Aldobiyan, I., Irving, J.A., Lomas, D.A.

To be published.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Biological Assembly Evidence: native gel electrophoresis

Macromolecule Content 

• Total Structure Weight: 45.93 kDa 
• Atom Count: 3,047 
• Modeled Residue Count: 371 
• Deposited Residue Count: 404 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-1-antitrypsin	A	404	Homo sapiens	Mutation(s): 2  Gene Names: SERPINA1, AAT, PI, PRO0684, PRO2209
UniProt & NIH Common Fund Data Resources
Find proteins for P01009 (Homo sapiens) Explore P01009  Go to UniProtKB:  P01009
PHAROS:  P01009 GTEx:  ENSG00000197249

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
H3B	C [auth A]	3-trimethylsilylpropane-1-sulfonic acid C6 H16 O3 S Si TVZRAEYQIKYCPH-UHFFFAOYSA-N
GLY	B [auth A], D [auth A]	GLYCINE C2 H5 N O2 DHMQDGOQFOQNFH-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.78 Å
• R-Value Free:  0.213 (Depositor), 0.220 (DCC) 
• R-Value Work:  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 0.185 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 114.46	α = 90
b = 38.95	β = 103.95
c = 89.85	γ = 90

Software Package:

Software Name	Purpose
XDS	data reduction
Aimless	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
xia2	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-11-20 
Deposition Author(s): Aldobiyan, I., Lomas, D.A., Irving, J.A.

---

Funding Organization	Location	Grant Number
Medical Research Council (United Kingdom)	United Kingdom	MR/N024842/1
Other government	United Kingdom	UCLH/NIHR Biomedical Research Centre

Revision History  

• Version 1.0: 2019-11-20
  Type: Initial release
  
• Version 1.1: 2024-01-24
  Changes: Data collection, Database references, Refinement description