9P77 | pdb_00009p77

Structure of Bovine Trypsin Complexed with Mellitic Acid at Room Temperature

PDB DOI: https://doi.org/10.2210/pdb9P77/pdb

Classification: HYDROLASE
Organism(s): Bos taurus
Expression System: Bos taurus
Mutation(s): No

Deposited: 2025-06-20 Released: 2026-05-27
Deposition Author(s): McPherson, A.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.30 Å
R-Value Free:
0.209 (Depositor), 0.209 (DCC)
R-Value Work:
0.169 (Depositor), 0.169 (DCC)
R-Value Observed:
0.171 (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

X-ray Diffraction Analyses of Trypsin Crystals Grown in the Presence of Additives

McPherson, A.

(2026) Cryst Growth Des 26: 352-364

DOI: https://doi.org/10.1021/acs.cgd.5c01305

Macromolecule Content

Total Structure Weight: 26.87 kDa
Atom Count: 1,927
Modeled Residue Count: 223
Deposited Residue Count: 246
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Pretrypsinogen I	A [auth B]	246	Bos taurus	Mutation(s): 0 Gene Names: PRSS1, TRP1, TRY1, TRYP1 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
BHC (Subject of Investigation/LOI) Query on BHC Download:Ideal Coordinates CCD File SDF format, chain F [auth B] SDF format, chain G [auth B] MOL2 format, chain F [auth B] MOL2 format, chain G [auth B] mmCIF format, chain F [auth B] mmCIF format, chain G [auth B]	F [auth B], G [auth B]	BENZENE HEXACARBOXYLIC ACID C₁₂ H₆ O₁₂ YDSWCNNOKPMOTP-UHFFFAOYSA-N		Interactions Focus chain F [auth B] Focus chain G [auth B] Interactions & Density Focus chain F [auth B] Focus chain G [auth B]
BEN Query on BEN Download:Ideal Coordinates CCD File SDF format, chain B MOL2 format, chain B mmCIF format, chain B	B	BENZAMIDINE C₇ H₈ N₂ PXXJHWLDUBFPOL-UHFFFAOYSA-N		Interactions Focus chain B Interactions & Density Focus chain B
MLI (Subject of Investigation/LOI) Query on MLI Download:Ideal Coordinates CCD File SDF format, chain C [auth B] MOL2 format, chain C [auth B] mmCIF format, chain C [auth B]	C [auth B]	MALONATE ION C₃ H₂ O₄ OFOBLEOULBTSOW-UHFFFAOYSA-L		Interactions Focus chain C [auth B] Interactions & Density Focus chain C [auth B]
ACT Query on ACT Download:Ideal Coordinates CCD File SDF format, chain D [auth B] SDF format, chain E [auth B] MOL2 format, chain D [auth B] MOL2 format, chain E [auth B] mmCIF format, chain D [auth B] mmCIF format, chain E [auth B]	D [auth B], E [auth B]	ACETATE ION C₂ H₃ O₂ QTBSBXVTEAMEQO-UHFFFAOYSA-M		Interactions Focus chain D [auth B] Focus chain E [auth B] Interactions & Density Focus chain D [auth B] Focus chain E [auth B]
CA Query on CA Download:Ideal Coordinates CCD File SDF format, chain H [auth B] MOL2 format, chain H [auth B] mmCIF format, chain H [auth B]	H [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain H [auth B] Interactions & Density Focus chain H [auth B]