2QPK

Crystal structure of the complex of bovine lactoperoxidase with salicylhydroxamic acid at 2.34 A resolution

• PDB DOI: https://doi.org/10.2210/pdb2QPK/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 2007-07-24 Released: 2007-08-07 
• Deposition Author(s): Singh, A.K., Singh, N., Sharma, S., Kaur, P., Singh, T.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.34 Å
• R-Value Free: 0.220 
• R-Value Work: 0.172 
• R-Value Observed: 0.174 

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: 71.76 kDa 
• Atom Count: 5,275 
• Modelled Residue Count: 595 
• Deposited Residue Count: 595 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Lactoperoxidase	A	595	Bos taurus	Mutation(s): 0  EC: 1.11.1.7
UniProt
Find proteins for P80025 (Bos taurus) Explore P80025  Go to UniProtKB:  P80025

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	B, D	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G62182OO GlyCosmos:  G62182OO GlyGen:  G62182OO

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C, E	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	P [auth A]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
SHA	Q [auth A]	SALICYLHYDROXAMIC ACID C7 H7 N O3 HBROZNQEVUILML-UHFFFAOYSA-N
IOD	G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A]	IODIDE ION I XMBWDFGMSWQBCA-UHFFFAOYSA-M
SCN	O [auth A]	THIOCYANATE ION C N S ZMZDMBWJUHKJPS-UHFFFAOYSA-M
CA	F [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
SEP	A	L-PEPTIDE LINKING	C3 H8 N O6 P		SER

Binding Affinity Annotations
ID	Source	Binding Affinity
SHA	BindingDB:  2QPK	IC50: 400 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.34 Å
• R-Value Free: 0.220 
• R-Value Work: 0.172 
• R-Value Observed: 0.174 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.618	α = 90
b = 80.553	β = 102.56
c = 77.803	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-08-07 
Deposition Author(s): Singh, A.K., Singh, N., Sharma, S., Kaur, P., Singh, T.P.

Revision History  

• Version 1.0: 2007-08-07
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.2: 2017-02-22
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary
• Version 2.1: 2023-10-25
  Changes: Data collection, Database references, Refinement description, Structure summary