3SO3

Structures of Fab-Protease Complexes Reveal a Highly Specific Non-Canonical Mechanism of Inhibition.

• PDB DOI: https://doi.org/10.2210/pdb3SO3/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli, Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2011-06-29 Released: 2012-06-20 
• Deposition Author(s): Schneider, E.L., Farady, C.J., Egea, P.F., Goetz, D.H., Baharuddin, A., Craik, C.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.194 
• R-Value Work: 0.161 
• R-Value Observed: 0.162 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

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

Macromolecule Content

• Total Structure Weight: 74.33 kDa 
• Atom Count: 5,605 
• Modelled Residue Count: 676 
• Deposited Residue Count: 686 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Suppressor of tumorigenicity 14 protein	A	241	Homo sapiens	Mutation(s): 1  Gene Names: PRSS14, SNC19, ST14, TADG15 EC: 3.4.21.109
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y5Y6 (Homo sapiens) Explore Q9Y5Y6  Go to UniProtKB:  Q9Y5Y6
PHAROS:  Q9Y5Y6 GTEx:  ENSG00000149418

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
A11 FAB light chain	B	217	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
A11 FAB heavy chain	C	228	Homo sapiens	Mutation(s): 0

Oligosaccharides

Help

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-fructofuranose-(2-1)-alpha-D-glucopyranose	D	2		N/A
Glycosylation Resources
GlyTouCan:  G05551OP GlyCosmos:  G05551OP

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	E [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 4
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900003	D	sucrose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.194 
• R-Value Work: 0.161 
• R-Value Observed: 0.162 
• Space Group: P 6₄

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 130.598	α = 90
b = 130.598	β = 90
c = 96.941	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
StructureStudio	data collection
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-06-20 
Deposition Author(s): Schneider, E.L., Farady, C.J., Egea, P.F., Goetz, D.H., Baharuddin, A., Craik, C.S.

Revision History  

• Version 1.0: 2012-06-20
  Type: Initial release
  
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2023-09-13
  Changes: Data collection, Database references, Refinement description, Structure summary