6F4V

Crystal structure of cleaved Kallistatin complexed with heparin at 1.8 Angstrom resolution

• PDB DOI: https://doi.org/10.2210/pdb6F4V/pdb

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


• Deposited: 2017-11-30 Released: 2018-12-12 
• Deposition Author(s): Zhou, A., Wei, Z.
• Funding Organization(s): British Heart Foundation, NSFC

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.196 
• R-Value Work: 0.172 
• R-Value Observed: 0.173 

Literature

Crystal structure of human Kallistatin

Zhou, A., Ma, L.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 44.74 kDa 
• Atom Count: 3,364 
• Modelled Residue Count: 376 
• Deposited Residue Count: 381 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kallistatin	A	341	Homo sapiens	Mutation(s): 0  Gene Names: SERPINA4, KST, PI4
UniProt & NIH Common Fund Data Resources
Find proteins for P29622 (Homo sapiens) Explore P29622  Go to UniProtKB:  P29622
PHAROS:  P29622 GTEx:  ENSG00000100665

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Kallistatin	B [auth G]	40	Homo sapiens	Mutation(s): 0  Gene Names: SERPINA4, KST, PI4
UniProt & NIH Common Fund Data Resources
Find proteins for P29622 (Homo sapiens) Explore P29622  Go to UniProtKB:  P29622
PHAROS:  P29622 GTEx:  ENSG00000100665

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
3-O-methyl-2-O-sulfo-alpha-L-idopyranuronic acid-(1-4)-methyl 2,3,6-tri-O-sulfo-alpha-D-glucopyranoside	C [auth B]	2		N/A
Glycosylation Resources
GlyTouCan:  G18182CM GlyCosmos:  G18182CM

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	H [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
EDO	D [auth A], E [auth A], F [auth A], G [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL	I [auth A], K [auth G]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA	J [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.196 
• R-Value Work: 0.172 
• R-Value Observed: 0.173 
• Space Group: P 6₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 113.77	α = 90
b = 113.77	β = 90
c = 76.561	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-12-12 
Deposition Author(s): Zhou, A., Wei, Z.

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Funding Organization	Location	Grant Number
British Heart Foundation	United Kingdom	--
NSFC	China	81572090

Revision History  

• Version 1.0: 2018-12-12
  Type: Initial release
  
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2024-05-08
  Changes: Data collection, Database references