9DJD | pdb_00009djd

T4 Lysozyme A73H/G77H/Y139F co-crystallized with Cu(II)-NTA

PDB DOI: https://doi.org/10.2210/pdb9DJD/pdb

Classification: HYDROLASE
Organism(s): Tequatrovirus T4
Expression System: Escherichia coli BL21(DE3)
Mutation(s): Yes

Deposited: 2024-09-06 Released: 2026-02-18
Deposition Author(s): Besaw, J.E., Ernst, O.P.
Funding Organization(s): Natural Sciences and Engineering Research Council (NSERC, Canada), Other private

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.11 Å
R-Value Free:
0.159 (Depositor), 0.159 (DCC)
R-Value Work:
0.150 (Depositor), 0.151 (DCC)
R-Value Observed:
0.151 (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

Structural characterization of the Cu(II)-NTA spin label on alpha-helices by X-ray crystallography and electron paramagnetic resonance

Besaw, J.E., Reichenwallner, J., Chen, E.Y., Hermet-Teesalu, P., Tregubenko, A., Kim, K., Morizumi, T., Ustav Jr., M., Ernst, O.P.

(2026) Structure 34

DOI: https://doi.org/10.1016/j.str.2026.01.010

Macromolecule Content

Total Structure Weight: 19.49 kDa
Atom Count: 1,679
Modeled Residue Count: 162
Deposited Residue Count: 164
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Endolysin	A	164	Tequatrovirus T4	Mutation(s): 5 Gene Names: e, T4Tp126 EC: 3.2.1.17
UniProt
Find proteins for D9IEF7 (Enterobacteria phage T4) Explore D9IEF7 Go to UniProtKB: D9IEF7
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	D9IEF7
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
NTA (Subject of Investigation/LOI) Query on NTA 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]	NITRILOTRIACETIC ACID C₆ H₉ N O₆ MGFYIUFZLHCRTH-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]
HEZ Query on HEZ 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]	HEXANE-1,6-DIOL C₆ H₁₄ O₂ XXMIOPMDWAUFGU-UHFFFAOYSA-N		Interactions Focus chain I [auth A] Focus chain J [auth A] Interactions & Density Focus chain I [auth A] Focus chain J [auth A]
PO4 Query on PO4 Download Ideal Coordinates CCD File SDF format, chain H [auth A] MOL2 format, chain H [auth A] mmCIF format, chain H [auth A]	H [auth A]	PHOSPHATE ION O₄ P NBIIXXVUZAFLBC-UHFFFAOYSA-K		Interactions Focus chain H [auth A] Interactions & Density Focus chain H [auth A]
CU (Subject of Investigation/LOI) Query on CU Download Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]
K Query on K 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]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Interactions & Density Focus chain D [auth A]
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain G [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A]	E [auth A], F [auth A], G [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Interactions & Density Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A]