9FK2 | pdb_00009fk2

The structure of glycosynthase XT6 (E265G mutant), the extracellular xylanase of G.proteiniphilus T-6 in complex with two xylobiose-F molecules

PDB DOI: https://doi.org/10.2210/pdb9FK2/pdb

Classification: HYDROLASE
Organism(s): Geobacillus proteiniphilus
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2024-06-01 Released: 2025-06-11
Deposition Author(s): Hadad, N., Chmelnik, O., Dessau, M., Shoham, Y., Shoham, G.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.25 Å
R-Value Free:
0.204 (Depositor), 0.205 (DCC)
R-Value Work:
0.160 (Depositor), 0.160 (DCC)
R-Value Observed:
0.162 (Depositor)

Starting Model: experimental
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Literature

The structure of glycosynthase XT6 (E265G mutant), the extracellular xylanase of G.proteiniphilus T-6 in complex with two xylobiose-F molecules

Hadad, N., Chmelnik, O., Dessau, M., Shoham, Y., Shoham, G.

To be published.

Macromolecule Content

Total Structure Weight: 44.83 kDa
Atom Count: 3,467
Modeled Residue Count: 374
Deposited Residue Count: 379
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Endo-1,4-beta-xylanase	A	379	Geobacillus proteiniphilus	Mutation(s): 1 EC: 3.2.1.8
UniProt
Find proteins for P40943 (Geobacillus stearothermophilus) Explore P40943 Go to UniProtKB: P40943
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P40943
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	D Interactions
beta-D-xylopyranose-(1-4)-1-fluoro-D-xylopyranose	B [auth D], C [auth E]	2	N/A	N/A	Interactions Focus chain B [auth D] Focus chain C [auth E] Interactions & Density Focus chain B [auth D] Focus chain C [auth E]

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ZN Query on ZN Download:Ideal Coordinates CCD File SDF format, chain I [auth A] SDF format, chain H [auth A] SDF format, chain G [auth A] SDF format, chain F [auth A] SDF format, chain E [auth A] SDF format, chain D [auth A] MOL2 format, chain I [auth A] MOL2 format, chain H [auth A] MOL2 format, chain G [auth A] MOL2 format, chain F [auth A] MOL2 format, chain E [auth A] MOL2 format, chain D [auth A] mmCIF format, chain I [auth A] mmCIF format, chain H [auth A] mmCIF format, chain G [auth A] mmCIF format, chain F [auth A] mmCIF format, chain E [auth A] mmCIF format, chain D [auth A]	D [auth A] E [auth A] F [auth A] G [auth A] H [auth A] D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Interactions & Density Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A]
CL Query on CL Download:Ideal Coordinates CCD File SDF format, chain K [auth A] SDF format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain J [auth A] mmCIF format, chain K [auth A] mmCIF format, chain J [auth A]	J [auth A], K [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain J [auth A] Focus chain K [auth A] Interactions & Density Focus chain J [auth A] Focus chain K [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.25 Å
R-Value Free: 0.204 (Depositor), 0.205 (DCC)
R-Value Work: 0.160 (Depositor), 0.160 (DCC)
R-Value Observed: 0.162 (Depositor)

Space Group: I 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 89.269	α = 90
b = 61.524	β = 105.495
c = 110.338	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHENIX	phasing

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2025-06-11

Deposition Author(s):

Funding Organization	Location	Grant Number
Not funded		--

Revision History (Full details and data files)

Version 1.0: 2025-06-11
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.