9BAS | pdb_00009bas

Structure of S1_15A, a lambda-carrageenan specific sulfatase, in complex with galactose-6-sulfate

• PDB DOI: https://doi.org/10.2210/pdb9BAS/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Pseudoalteromonas distincta
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-04-04 Released: 2025-08-27 
• Deposition Author(s): Hettle, J.A., Vickers, C., Boraston, A.B.
• Funding Organization(s): Natural Sciences and Engineering Research Council (NSERC, Canada)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.79 Å
• R-Value Free: 
  0.236 (Depositor), 0.236 (DCC) 
• R-Value Work: 
  0.187 (Depositor), 0.187 (DCC) 
• R-Value Observed: 
  0.191 (Depositor) 

Starting Model: experimental

Literature

Structure of S1_15A, a lambda-carrageenan specific sulfatase, in complex with galactose-6-sulfate

Hettle, J.A., Vickers, C., Boraston, A.B.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 116.2 kDa 
• Atom Count: 7,697 
• Modeled Residue Count: 958 
• Deposited Residue Count: 1,046 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
S1_15A sulfatase	A [auth B], B [auth A]	523	Pseudoalteromonas distincta	Mutation(s): 0
UniProt
Find proteins for A0A1I0C1I6 (Thalassotalea agarivorans) Explore A0A1I0C1I6  Go to UniProtKB:  A0A1I0C1I6

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
G6S (Subject of Investigation/LOI)	D [auth B], F [auth A]	6-O-sulfo-beta-D-galactopyranose C6 H12 O9 S OKUVUONOJCDUJY-FPRJBGLDSA-N
CA	C [auth B], E [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.79 Å
• R-Value Free:  0.236 (Depositor), 0.236 (DCC) 
• R-Value Work:  0.187 (Depositor), 0.187 (DCC) 
• R-Value Observed: 0.191 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.866	α = 90
b = 110.007	β = 106.25
c = 71.791	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data scaling
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-27 
Deposition Author(s): Hettle, J.A., Vickers, C., Boraston, A.B.

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Funding Organization	Location	Grant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)	Canada	--

Revision History  

• Version 1.0: 2025-08-27
  Type: Initial release