9YB8 | pdb_00009yb8

SFTI-1 containing L-2-Thiaproline at residue 9 in complex with Trypsin

PDB DOI: https://doi.org/10.2210/pdb9YB8/pdb

Classification: HYDROLASE/HYDROLASE INHIBITOR
Organism(s): Bos taurus, Helianthus annuus
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: 1.22 Å
R-Value Free:
0.161 (Depositor), 0.160 (DCC)
R-Value Work:
0.139 (Depositor), 0.138 (DCC)
R-Value Observed:
0.140 (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 9 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: 30.06 kDa
Atom Count: 2,225
Modeled Residue Count: 237
Deposited Residue Count: 260
Unique protein chains: 2

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Pretrypsinogen I,	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

Find similar proteins by: Sequence | 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Trypsin inhibitor 1	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

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PEG Query on PEG Download:Ideal Coordinates CCD File SDF format, chain X [auth A] MOL2 format, chain X [auth A] mmCIF format, chain X [auth A]	X [auth A]	DI(HYDROXYETHYL)ETHER C₄ H₁₀ O₃ MTHSVFCYNBDYFN-UHFFFAOYSA-N		Interactions Focus chain X [auth A] Interactions & Density Focus chain X [auth A]
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain Z [auth A] SDF format, chain R [auth A] SDF format, chain Q [auth A] SDF format, chain P [auth A] SDF format, chain O [auth A] SDF format, chain N [auth A] SDF format, chain M [auth A] SDF format, chain L [auth A] SDF format, chain HA [auth A] MOL2 format, chain Z [auth A] MOL2 format, chain R [auth A] MOL2 format, chain Q [auth A] MOL2 format, chain P [auth A] MOL2 format, chain O [auth A] MOL2 format, chain N [auth A] MOL2 format, chain M [auth A] MOL2 format, chain L [auth A] MOL2 format, chain HA [auth A] mmCIF format, chain Z [auth A] mmCIF format, chain R [auth A] mmCIF format, chain Q [auth A] mmCIF format, chain P [auth A] mmCIF format, chain O [auth A] mmCIF format, chain N [auth A] mmCIF format, chain M [auth A] mmCIF format, chain L [auth A] mmCIF format, chain HA [auth A]	HA [auth A] L [auth A] M [auth A] N [auth A] O [auth A] HA [auth A], L [auth A], M [auth A], N [auth A], O [auth A], P [auth A], Q [auth A], R [auth A], Z [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain HA [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 Z [auth A] Interactions & Density Focus chain HA [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 Z [auth A]
GOL Query on GOL Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain GA [auth A] SDF format, chain S [auth A] SDF format, chain V [auth A] SDF format, chain Y [auth A] SDF format, chain T [auth A] SDF format, chain K [auth A] SDF format, chain IA [auth B] SDF format, chain AA [auth A] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain GA [auth A] MOL2 format, chain S [auth A] MOL2 format, chain V [auth A] MOL2 format, chain Y [auth A] MOL2 format, chain T [auth A] MOL2 format, chain K [auth A] MOL2 format, chain IA [auth B] MOL2 format, chain AA [auth A] mmCIF format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain GA [auth A] mmCIF format, chain S [auth A] mmCIF format, chain V [auth A] mmCIF format, chain Y [auth A] mmCIF format, chain T [auth A] mmCIF format, chain K [auth A] mmCIF format, chain IA [auth B] mmCIF format, chain AA [auth A]	AA [auth A] D [auth A] E [auth A] F [auth A] GA [auth A] AA [auth A], D [auth A], E [auth A], F [auth A], GA [auth A], IA [auth B], K [auth A], S [auth A], T [auth A], V [auth A], Y [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain AA [auth A] Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain GA [auth A] Focus chain IA [auth B] Focus chain K [auth A] Focus chain S [auth A] Focus chain T [auth A] Focus chain V [auth A] Focus chain Y [auth A] Interactions & Density Focus chain AA [auth A] Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain GA [auth A] Focus chain IA [auth B] Focus chain K [auth A] Focus chain S [auth A] Focus chain T [auth A] Focus chain V [auth A] Focus chain Y [auth A]
EDO Query on EDO Download:Ideal Coordinates CCD File SDF format, chain W [auth A] SDF format, chain U [auth A] SDF format, chain J [auth A] SDF format, chain I [auth A] SDF format, chain FA [auth A] SDF format, chain EA [auth A] SDF format, chain DA [auth A] SDF format, chain CA [auth A] SDF format, chain BA [auth A] MOL2 format, chain W [auth A] MOL2 format, chain U [auth A] MOL2 format, chain J [auth A] MOL2 format, chain I [auth A] MOL2 format, chain FA [auth A] MOL2 format, chain EA [auth A] MOL2 format, chain DA [auth A] MOL2 format, chain CA [auth A] MOL2 format, chain BA [auth A] mmCIF format, chain W [auth A] mmCIF format, chain U [auth A] mmCIF format, chain J [auth A] mmCIF format, chain I [auth A] mmCIF format, chain FA [auth A] mmCIF format, chain EA [auth A] mmCIF format, chain DA [auth A] mmCIF format, chain CA [auth A] mmCIF format, chain BA [auth A]	BA [auth A] CA [auth A] DA [auth A] EA [auth A] FA [auth A] BA [auth A], CA [auth A], DA [auth A], EA [auth A], FA [auth A], I [auth A], J [auth A], U [auth A], W [auth A]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain BA [auth A] Focus chain CA [auth A] Focus chain DA [auth A] Focus chain EA [auth A] Focus chain FA [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain U [auth A] Focus chain W [auth A] Interactions & Density Focus chain BA [auth A] Focus chain CA [auth A] Focus chain DA [auth A] Focus chain EA [auth A] Focus chain FA [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain U [auth A] Focus chain W [auth A]
ACT Query on ACT Download:Ideal Coordinates CCD File SDF format, chain H [auth A] SDF format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain G [auth A] mmCIF format, chain H [auth A] mmCIF format, chain G [auth A]	G [auth A], H [auth A]	ACETATE ION C₂ H₃ O₂ QTBSBXVTEAMEQO-UHFFFAOYSA-M		Interactions Focus chain G [auth A] Focus chain H [auth A] Interactions & Density Focus chain G [auth A] Focus chain H [auth A]
CA Query on CA Download:Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]