9S87 | pdb_00009s87

Crystal structure of the BRI1 ectodomain from Arabidopsis thaliana in complex with castasterone.

PDB DOI: https://doi.org/10.2210/pdb9S87/pdb

Classification: MEMBRANE PROTEIN
Organism(s): Arabidopsis thaliana
Expression System: Trichoplusia ni
Mutation(s): No

Deposited: 2025-08-05 Released: 2025-09-10
Deposition Author(s): Caregnato, A., Hothorn, M.
Funding Organization(s): Swiss National Science Foundation

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.14 Å
R-Value Free:
0.243 (Depositor), 0.241 (DCC)
R-Value Work:
0.212 (Depositor), 0.212 (DCC)
R-Value Observed:
0.214 (Depositor)

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

A mechanistic framework for the recognition of chemically diverse brassinosteroids by BRI1-family receptor kinases.

Caregnato, A., Chen, H., Kvasnica, M., Hohmann, U., Oklestkova, J., Ferrer, K., Broger, L., Hothorn, L.A., Strnad, M., Hothorn, M.

To be published.

Macromolecule Content

Total Structure Weight: 92.05 kDa
Atom Count: 6,204
Modeled Residue Count: 742
Deposited Residue Count: 797
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein BRASSINOSTEROID INSENSITIVE 1	A	797	Arabidopsis thaliana	Mutation(s): 0 Gene Names: BRI1, At4g39400, F23K16.30 EC: 2.7.10.1 (PDB Primary Data), 2.7.11.1 (PDB Primary Data)
UniProt
Find proteins for O22476 (Arabidopsis thaliana) Explore O22476 Go to UniProtKB: O22476
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	O22476
Glycosylation
Glycosylation Sites: 8	Glycosylation Focus chain A
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

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

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
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	C	4		N-Glycosylation	Interactions Focus chain C Interactions & Density Focus chain C
Glycosylation Resources
GlyTouCan: G81315DD GlyCosmos: G81315DD GlyGen: G81315DD

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
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	D	5		N-Glycosylation	Interactions Focus chain D Interactions & Density Focus chain D
Glycosylation Resources
GlyTouCan: G22768VO GlyCosmos: G22768VO GlyGen: G22768VO

Entity ID: 5
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	F	3		N/A	Interactions Focus chain F Interactions & Density Focus chain F
Glycosylation Resources
GlyTouCan: G21290RB GlyCosmos: G21290RB GlyGen: G21290RB

Entity ID: 6
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	G	3		N/A	Interactions Focus chain G Interactions & Density Focus chain G
Glycosylation Resources
GlyTouCan: G15407YE GlyCosmos: G15407YE GlyGen: G15407YE

Entity ID: 7
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose	H	2		N-Glycosylation	Interactions Focus chain H Interactions & Density Focus chain H
Glycosylation Resources
GlyTouCan: G86851RC GlyCosmos: G86851RC GlyGen: G86851RC

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
A1JME Query on A1JME Download Ideal Coordinates CCD File SDF format, chain P [auth A] MOL2 format, chain P [auth A] mmCIF format, chain P [auth A]	P [auth A]	Castasterone C₂₈ H₄₈ O₅ VYUIKSFYFRVQLF-YLNAYWRASA-N		Interactions Focus chain P [auth A] Interactions & Density Focus chain P [auth A]
NAG Query on NAG Download Ideal Coordinates CCD File SDF format, chain L [auth A] SDF format, chain N [auth A] SDF format, chain O [auth A] MOL2 format, chain L [auth A] MOL2 format, chain N [auth A] MOL2 format, chain O [auth A] mmCIF format, chain L [auth A] mmCIF format, chain N [auth A] mmCIF format, chain O [auth A]	L [auth A], N [auth A], O [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C₈ H₁₅ N O₆ OVRNDRQMDRJTHS-FMDGEEDCSA-N		Interactions Focus chain L [auth A] Focus chain N [auth A] Focus chain O [auth A] Interactions & Density Focus chain L [auth A] Focus chain N [auth A] Focus chain O [auth A]
CIT Query on CIT Download Ideal Coordinates CCD File SDF format, chain M [auth A] MOL2 format, chain M [auth A] mmCIF format, chain M [auth A]	M [auth A]	CITRIC ACID C₆ H₈ O₇ KRKNYBCHXYNGOX-UHFFFAOYSA-N		Interactions Focus chain M [auth A] Interactions & Density Focus chain M [auth A]
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain I [auth A] SDF format, chain J [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] mmCIF format, chain I [auth A] mmCIF format, chain J [auth A]	I [auth A], J [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain I [auth A] Focus chain J [auth A] Interactions & Density Focus chain I [auth A] Focus chain J [auth A]
EDO Query on EDO Download Ideal Coordinates CCD File SDF format, chain K [auth A] MOL2 format, chain K [auth A] mmCIF format, chain K [auth A]	K [auth A]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain K [auth A] Interactions & Density Focus chain K [auth A]