9YB7 | pdb_00009yb7

SFTI-1 containing L-2-Thiaproline at residue 8 in complex with Trypsin

PDB DOI: https://doi.org/10.2210/pdb9YB7/pdb

Classification: HYDROLASE/HYDROLASE INHIBITOR
Organism(s): Helianthus annuus, Bos taurus
Mutation(s): Yes

Deposited: 2025-09-17 Released: 2026-09-23
Deposition Author(s): Gare, C.L., Frkic, R.L., White, A.M., Habel, E.I., Jackson, C.J., Malins, L.R.
Funding Organization(s): Australian Research Council (ARC), Other private

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.47 Å
R-Value Free:
0.197 (Depositor), 0.197 (DCC)
R-Value Work:
0.157 (Depositor), 0.156 (DCC)
R-Value Observed:
0.159 (Depositor)

Starting Model: experimental
View more details

wwPDB Validation 3D Report Full Report

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

Literature

SFTI-1 containing L-2-Thiaproline at residue 8 in complex with Trypsin

Gare, C.L., Frkic, R.L., White, A.M., Habel, E.I., Jackson, C.J., Malins, L.R.

To be published.

Macromolecule Content

Total Structure Weight: 28.46 kDa
Atom Count: 2,010
Modeled Residue Count: 237
Deposited Residue Count: 260
Unique protein chains: 2

Macromolecules

Find similar proteins by: Sequence | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Trypsin inhibitor 1	A [auth B]	14	Helianthus annuus	Mutation(s): 1
UniProt
Find proteins for Q4GWU5 (Helianthus annuus) Explore Q4GWU5 Go to UniProtKB: Q4GWU5
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q4GWU5
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

| 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Pretrypsinogen I,	B [auth A]	246	Bos taurus	Mutation(s): 0 EC: 3.4.21.4
UniProt
Find proteins for P00760 (Bos taurus) Explore P00760 Go to UniProtKB: P00760
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P00760
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PG4 Query on PG4 Download:Ideal Coordinates CCD File SDF format, chain I [auth A] MOL2 format, chain I [auth A] mmCIF format, chain I [auth A]	I [auth A]	TETRAETHYLENE GLYCOL C₈ H₁₈ O₅ UWHCKJMYHZGTIT-UHFFFAOYSA-N		Interactions Focus chain I [auth A] Interactions & Density Focus chain I [auth A]
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain N [auth A] SDF format, chain O [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain N [auth A] MOL2 format, chain O [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain N [auth A] mmCIF format, chain O [auth A]	E [auth A], F [auth A], G [auth A], N [auth A], O [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain N [auth A] Focus chain O [auth A] Interactions & Density Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain N [auth A] Focus chain O [auth A]
GOL Query on GOL Download:Ideal Coordinates CCD File SDF format, chain L [auth A] MOL2 format, chain L [auth A] mmCIF format, chain L [auth A]	L [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain L [auth A] Interactions & Density Focus chain L [auth A]
ACT Query on ACT Download:Ideal Coordinates CCD File SDF format, chain C [auth B] SDF format, chain H [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain M [auth A] MOL2 format, chain C [auth B] MOL2 format, chain H [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain M [auth A] mmCIF format, chain C [auth B] mmCIF format, chain H [auth A] mmCIF format, chain J [auth A] mmCIF format, chain K [auth A] mmCIF format, chain M [auth A]	C [auth B], H [auth A], J [auth A], K [auth A], M [auth A]	ACETATE ION C₂ H₃ O₂ QTBSBXVTEAMEQO-UHFFFAOYSA-M		Interactions Focus chain C [auth B] Focus chain H [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain M [auth A] Interactions & Density Focus chain C [auth B] Focus chain H [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain M [auth A]
CA Query on CA Download:Ideal Coordinates CCD File SDF format, chain D [auth A] MOL2 format, chain D [auth A] mmCIF format, chain D [auth A]	D [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Interactions & Density Focus chain D [auth A]