8JZN

Structure of a fungal 1,3-beta-glucan synthase

PDB DOI: https://doi.org/10.2210/pdb8JZN/pdb
EM Map EMD-36748: EMDB EMDataResource

Classification: TRANSFERASE
Organism(s): Saccharomyces cerevisiae
Expression System: Saccharomyces cerevisiae
Mutation(s): No
Membrane Protein: Yes PDBTM

Deposited: 2023-07-05 Released: 2023-10-04
Deposition Author(s): Zhao, C., You, Z., Chen, D., Hang, J., Wang, Z., Meng, J., Wang, L., Zhao, P., Qiao, J., Yun, C., Bai, L.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.47 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

Structure of a fungal 1,3-beta-glucan synthase.

Zhao, C.R., You, Z.L., Chen, D.D., Hang, J., Wang, Z.B., Ji, M., Wang, L.X., Zhao, P., Qiao, J., Yun, C.H., Bai, L.

(2023) Sci Adv 9: eadh7820-eadh7820

PubMed: 37703377 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1126/sciadv.adh7820
Primary Citation of Related Structures:
8JZN

PubMed Abstract:
1,3-β-Glucan serves as the primary component of the fungal cell wall and is produced by 1,3-β-glucan synthase located in the plasma membrane. This synthase is a molecular target for antifungal drugs such as echinocandins and the triterpenoid ibrexafungerp. In this study, we present the cryo-electron microscopy structure of Saccharomyces cerevisiae 1,3-β-glucan synthase (Fks1) at 2.47-Å resolution. The structure reveals a central catalytic region adopting a cellulose synthase fold with a cytosolic conserved GT-A-type glycosyltransferase domain and a closed transmembrane channel responsible for glucan transportation. Two extracellular disulfide bonds are found to be crucial for Fks1 enzymatic activity. Through structural comparative analysis with cellulose synthases and structure-guided mutagenesis studies, we gain previously unknown insights into the molecular mechanisms of fungal 1,3-β-glucan synthase.

Organizational Affiliation

Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University, Beijing, China.

Macromolecule Content

Total Structure Weight: 224.58 kDa
Atom Count: 12,831
Modelled Residue Count: 1,489
Deposited Residue Count: 1,876
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
1,3-beta-glucan synthase component FKS1	A	1,876	Saccharomyces cerevisiae	Mutation(s): 0 Gene Names: FKS1, CND1, CWH53, ETG1, GLS1, GSC1, PBR1, YLR342W, L8300.6 EC: 2.4.1.34 Membrane Entity: Yes
UniProt
Find proteins for P38631 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P38631 Go to UniProtKB: P38631
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P38631
Sequence Annotations Expand
Reference Sequence

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	B	2		N-Glycosylation	Interactions Focus chain B Interactions & Density Focus chain B
Glycosylation Resources
GlyTouCan: G42666HT GlyCosmos: G42666HT GlyGen: G42666HT

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
AV0 Query on AV0 Download Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain E [auth A] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A]	D [auth A], E [auth A]	Lauryl Maltose Neopentyl Glycol C₄₇ H₈₈ O₂₂ MADJBYLAYPCCOO-VWHTXWAPSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Interactions & Density Focus chain D [auth A] Focus chain E [auth A]
POV (Subject of Investigation/LOI) Query on POV Download Ideal Coordinates CCD File SDF format, chain T [auth A] SDF format, chain C [auth A] MOL2 format, chain T [auth A] MOL2 format, chain C [auth A]	C [auth A], T [auth A]	(2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate C₄₂ H₈₂ N O₈ P WTJKGGKOPKCXLL-PFDVCBLKSA-N		Interactions Focus chain C [auth A] Focus chain T [auth A] Interactions & Density Focus chain C [auth A] Focus chain T [auth A]
ERG Query on ERG Download Ideal Coordinates CCD File SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain L [auth A] SDF format, chain O [auth A] SDF format, chain P [auth A] SDF format, chain Q [auth A] SDF format, chain R [auth A] SDF format, chain S [auth A] SDF format, chain F [auth A] SDF format, chain I [auth A] SDF format, chain M [auth A] SDF format, chain N [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain L [auth A] MOL2 format, chain O [auth A] MOL2 format, chain P [auth A] MOL2 format, chain Q [auth A] MOL2 format, chain R [auth A] MOL2 format, chain S [auth A] MOL2 format, chain F [auth A] MOL2 format, chain I [auth A] MOL2 format, chain M [auth A] MOL2 format, chain N [auth A]	F [auth A] G [auth A] H [auth A] I [auth A] J [auth A] F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A], O [auth A], P [auth A], Q [auth A], R [auth A], S [auth A]	ERGOSTEROL C₂₈ H₄₄ O DNVPQKQSNYMLRS-APGDWVJJSA-N		Interactions Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain P [auth A] Focus chain Q [auth A] Focus chain R [auth A] Focus chain S [auth A] Interactions & Density Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain P [auth A] Focus chain Q [auth A] Focus chain R [auth A] Focus chain S [auth A]