1NOU

Native human lysosomal beta-hexosaminidase isoform B

• PDB DOI: https://doi.org/10.2210/pdb1NOU/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2003-01-16 Released: 2003-04-08 
• Deposition Author(s): Mark, B.L., Mahuran, D.J., Cherney, M.M., Zhao, D., Knapp, S., James, M.N.G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.231 
• R-Value Work: 0.201 
• R-Value Observed: 0.203 

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 117.59 kDa 
• Atom Count: 8,061 
• Modelled Residue Count: 960 
• Deposited Residue Count: 1,014 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
beta-hexosaminidase beta chain	A, B	507	Homo sapiens	Mutation(s): 0  EC: 3.2.1.52
UniProt & NIH Common Fund Data Resources
Find proteins for P07686 (Homo sapiens) Explore P07686  Go to UniProtKB:  P07686
PHAROS:  P07686 GTEx:  ENSG00000049860

Oligosaccharides

Help

Entity ID: 2
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, D	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	G [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	E [auth A], F [auth A], H [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.231 
• R-Value Work: 0.201 
• R-Value Observed: 0.203 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 112.465	α = 90
b = 112.465	β = 90
c = 397.867	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-04-08 
Deposition Author(s): Mark, B.L., Mahuran, D.J., Cherney, M.M., Zhao, D., Knapp, S., James, M.N.G.

Revision History  

• Version 1.0: 2003-04-08
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Derived calculations, Version format compliance
• Version 1.3: 2012-11-07
  Changes: Derived calculations
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary