Crystal structure of recombinant full length human butyrylcholinesterase

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.225 

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Crystallization and X-ray structure of full-length recombinant human butyrylcholinesterase.

Ngamelue, M.N.Homma, K.Lockridge, O.Asojo, O.A.

(2007) Acta Crystallogr Sect F Struct Biol Cryst Commun 63: 723-727

  • DOI: https://doi.org/10.1107/S1744309107037335
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Human butyrylcholinesterase (BChE) has been shown to function as an endogenous scavenger of diverse poisons. BChE is a 340 kDa tetrameric glycoprotein that is present in human serum at a concentration of 5 mg l(-1). The well documented therapeutic effects of BChE on cocaine toxicity and organophosphorus agent poisoning has increased the need for effective methods of producing recombinant therapeutic BChE. In order to be therapeutically useful, BChE must have a long circulatory residence time or associate as tetramers. Full-length recombinant BChE produced in Chinese hamster ovary (CHO) cells or human embryonic kidney cells has been shown to associate as monomers, with a shorter circulatory residence time than the naturally occurring tetrameric serum protein. Based on the preceding observation as well as the need to develop novel methodologies to facilitate the mass production of therapeutic recombinant BChE, studies have been initiated to determine the structural basis of tetramer formation. Towards these ends, full-length monomeric recombinant BChE has been crystallized for the first time. A 2.8 A X-ray structure was solved in space group P42(1)2, with unit-cell parameters a = b = 156, c = 146 A.

  • Organizational Affiliation

    Pathology and Microbiology Department, University of Nebraska Medical Center, 986495 Nebraska Medical Center, Omaha, NE 68198-6495, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
574Homo sapiensMutation(s): 0 
Gene Names: BCHECHE1
UniProt & NIH Common Fund Data Resources
Find proteins for P06276 (Homo sapiens)
Explore P06276 
Go to UniProtKB:  P06276
PHAROS:  P06276
GTEx:  ENSG00000114200 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06276
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on NAG

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
F [auth A],
O [auth B],
P [auth B]
C8 H15 N O6
Query on SO4

Download Ideal Coordinates CCD File 
G [auth A]
H [auth A]
I [auth A]
J [auth A]
K [auth A]
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
Q [auth B],
R [auth B]
O4 S
Query on GOL

Download Ideal Coordinates CCD File 
L [auth A],
M [auth A],
N [auth A],
S [auth B],
T [auth B]
C3 H8 O3
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.225 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 150.803α = 90
b = 150.803β = 90
c = 142.12γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-09-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 2.0: 2020-05-13
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
  • Version 3.1: 2023-08-30
    Changes: Data collection, Database references, Refinement description, Structure summary