9I50 | pdb_00009i50

Crystal structure of feruloyl esterase from Fusarium oxysporum G122S variant

PDB DOI: https://doi.org/10.2210/pdb9I50/pdb

Classification: HYDROLASE
Organism(s): Fusarium oxysporum
Expression System: Komagataella pastoris
Mutation(s): Yes

Deposited: 2025-01-27 Released: 2026-04-01
Deposition Author(s): Karampa, P., Dimarogona, M., Topakas, E., Makryniotis, K., Nikolaivits, E.
Funding Organization(s): Hellenic Foundation for Research and Innovation (HFRI)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.90 Å
R-Value Free:
0.197 (Depositor), 0.200 (DCC)
R-Value Work:
0.162 (Depositor), 0.165 (DCC)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.0 of the entry. See complete history.

Literature

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties.

Karampa, P., Makryniotis, K., Sousani, T.I., Topakas, E., Daskalakis, V., Dimarogona, M.

(2026) FEBS Lett

PubMed: 41797379 Search on PubMed
DOI: https://doi.org/10.1002/1873-3468.70322
Primary Citation Related Structures:
9HUN, 9I50

PubMed Abstract:
Mono(2-hydroxyethyl) terephthalate (MHET) esterases (MHETases) are enzymes implicated in polyethylene terephthalate (PET) biodegradation. The present study elucidates the structural determinants that result in increased MHET degradation by a feruloyl esterase, which has been engineered to resemble the MHETase active site. The crystal structures of the variant in apo- and benzoic acid bound states reveal the changes induced by the introduced mutation, specifically the formation of a hydrogen bond and a trans to cis isomerization of a peptide bond in the vicinity of the catalytic site. Molecular dynamics simulations demonstrate the stabilization of the loop harboring the engineered residue, as well as an expansion of the substrate binding cleft, which would facilitate accommodation of a broader variety of substrates, indicative of a promiscuous biocatalyst.

Organizational Affiliation

Laboratory of Structural Biology and Biotechnology, Department of Chemical Engineering, University of Patras, Greece.

Macromolecule Content

Total Structure Weight: 133.55 kDa
Atom Count: 9,201
Modeled Residue Count: 1,016
Deposited Residue Count: 1,126
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carboxylic ester hydrolase	A, B	563	Fusarium oxysporum	Mutation(s): 1 Gene Names: faeC EC: 3.1.1
UniProt
Find proteins for A0A1D3S5H0 (Fusarium oxysporum) Explore A0A1D3S5H0 Go to UniProtKB: A0A1D3S5H0
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	A0A1D3S5H0
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

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Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C	3		N/A	Interactions Focus chain C Interactions & Density Focus chain C

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	D	6		N/A	Interactions Focus chain D Interactions & Density Focus chain D

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	E	9		N/A	Interactions Focus chain E Interactions & Density Focus chain E

Entity ID: 5
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	F, G	10		N/A	Interactions Focus chain F Focus chain G Interactions & Density Focus chain F Focus chain G

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
NAG Query on NAG Download Ideal Coordinates CCD File SDF format, chain H [auth A] SDF format, chain O [auth A] SDF format, chain Y [auth B] SDF format, chain Z [auth B] SDF format, chain R [auth B] MOL2 format, chain H [auth A] MOL2 format, chain O [auth A] MOL2 format, chain Y [auth B] MOL2 format, chain Z [auth B] MOL2 format, chain R [auth B] mmCIF format, chain H [auth A] mmCIF format, chain O [auth A] mmCIF format, chain Y [auth B] mmCIF format, chain Z [auth B] mmCIF format, chain R [auth B]	H [auth A], O [auth A], R [auth B], Y [auth B], Z [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C₈ H₁₅ N O₆ OVRNDRQMDRJTHS-FMDGEEDCSA-N		Interactions Focus chain H [auth A] Focus chain O [auth A] Focus chain R [auth B] Focus chain Y [auth B] Focus chain Z [auth B] Interactions & Density Focus chain H [auth A] Focus chain O [auth A] Focus chain R [auth B] Focus chain Y [auth B] Focus chain Z [auth B]
PGE Query on PGE Download Ideal Coordinates CCD File SDF format, chain N [auth A] MOL2 format, chain N [auth A] mmCIF format, chain N [auth A]	N [auth A]	TRIETHYLENE GLYCOL C₆ H₁₄ O₄ ZIBGPFATKBEMQZ-UHFFFAOYSA-N		Interactions Focus chain N [auth A] Interactions & Density Focus chain N [auth A]
PEG Query on PEG Download Ideal Coordinates CCD File SDF format, chain BA [auth B] SDF format, chain CA [auth B] SDF format, chain DA [auth B] SDF format, chain L [auth A] SDF format, chain Q [auth A] SDF format, chain S [auth B] SDF format, chain J [auth A] SDF format, chain I [auth A] MOL2 format, chain BA [auth B] MOL2 format, chain CA [auth B] MOL2 format, chain DA [auth B] MOL2 format, chain L [auth A] MOL2 format, chain Q [auth A] MOL2 format, chain S [auth B] MOL2 format, chain J [auth A] MOL2 format, chain I [auth A] mmCIF format, chain BA [auth B] mmCIF format, chain CA [auth B] mmCIF format, chain DA [auth B] mmCIF format, chain L [auth A] mmCIF format, chain Q [auth A] mmCIF format, chain S [auth B] mmCIF format, chain J [auth A] mmCIF format, chain I [auth A]	BA [auth B] CA [auth B] DA [auth B] I [auth A] J [auth A] BA [auth B], CA [auth B], DA [auth B], I [auth A], J [auth A], L [auth A], Q [auth A], S [auth B]	DI(HYDROXYETHYL)ETHER C₄ H₁₀ O₃ MTHSVFCYNBDYFN-UHFFFAOYSA-N		Interactions Focus chain BA [auth B] Focus chain CA [auth B] Focus chain DA [auth B] Focus chain I [auth A] Focus chain J [auth A] Focus chain L [auth A] Focus chain Q [auth A] Focus chain S [auth B] Interactions & Density Focus chain BA [auth B] Focus chain CA [auth B] Focus chain DA [auth B] Focus chain I [auth A] Focus chain J [auth A] Focus chain L [auth A] Focus chain Q [auth A] Focus chain S [auth B]
EDO Query on EDO Download Ideal Coordinates CCD File SDF format, chain K [auth A] SDF format, chain T [auth B] SDF format, chain W [auth B] SDF format, chain X [auth B] SDF format, chain V [auth B] SDF format, chain U [auth B] SDF format, chain M [auth A] MOL2 format, chain K [auth A] MOL2 format, chain T [auth B] MOL2 format, chain W [auth B] MOL2 format, chain X [auth B] MOL2 format, chain V [auth B] MOL2 format, chain U [auth B] MOL2 format, chain M [auth A] mmCIF format, chain K [auth A] mmCIF format, chain T [auth B] mmCIF format, chain W [auth B] mmCIF format, chain X [auth B] mmCIF format, chain V [auth B] mmCIF format, chain U [auth B] mmCIF format, chain M [auth A]	K [auth A] M [auth A] T [auth B] U [auth B] V [auth B] K [auth A], M [auth A], T [auth B], U [auth B], V [auth B], W [auth B], X [auth B]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain K [auth A] Focus chain M [auth A] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B] Focus chain X [auth B] Interactions & Density Focus chain K [auth A] Focus chain M [auth A] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B] Focus chain X [auth B]
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain AA [auth B] SDF format, chain P [auth A] MOL2 format, chain AA [auth B] MOL2 format, chain P [auth A] mmCIF format, chain AA [auth B] mmCIF format, chain P [auth A]	AA [auth B], P [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain AA [auth B] Focus chain P [auth A] Interactions & Density Focus chain AA [auth B] Focus chain P [auth A]