9QJ0 | pdb_00009qj0

Crystal structure of S-adenosyl-L-homocysteine hydrolase from P. aeruginosa: Q65A mutant soaked with adenosine and probed with rubidium to confirm disruption of a potassium binding site.

PDB DOI: https://doi.org/10.2210/pdb9QJ0/pdb

Classification: HYDROLASE
Organism(s): Pseudomonas aeruginosa PAO1
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-03-18 Released: 2026-04-08
Deposition Author(s): Malecki, P.H., Wozniak, K., Stepniewska, M., Brzezinski, K.
Funding Organization(s): Polish National Science Centre

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.40 Å
R-Value Free:
0.229 (Depositor), 0.231 (DCC)
R-Value Work:
0.164 (Depositor), 0.166 (DCC)
R-Value Observed:
0.174 (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

Crystal structure of the S-adenosyl-L-homocysteine hydrolase from P. aeruginosa, a Q65N mutant probed with rubidium to prove disruption of a potassium binding site.

Malecki, P.H., Wozniak, K., Stepniewska, M., Brzezinski, K.

To be published.

Macromolecule Content

Total Structure Weight: 422.09 kDa
Atom Count: 30,163
Modeled Residue Count: 3,688
Deposited Residue Count: 3,776
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Adenosylhomocysteinase	A B C D E [auth H] A, B, C, D, E [auth H], F [auth I], G [auth J], H [auth K]	472	Pseudomonas aeruginosa PAO1	Mutation(s): 0 Gene Names: ahcY, sahH, PA0432 EC: 3.3.1.1 (PDB Primary Data), 3.13.2.1 (UniProt)
UniProt
Find proteins for Q9I685 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9I685 Go to UniProtKB: Q9I685
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q9I685
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
NAD Query on NAD Download Ideal Coordinates CCD File SDF format, chain CA [auth K] SDF format, chain I [auth A] SDF format, chain M [auth B] SDF format, chain O [auth C] SDF format, chain R [auth D] SDF format, chain U [auth H] SDF format, chain X [auth I] SDF format, chain AA [auth J] MOL2 format, chain CA [auth K] MOL2 format, chain I [auth A] MOL2 format, chain M [auth B] MOL2 format, chain O [auth C] MOL2 format, chain R [auth D] MOL2 format, chain U [auth H] MOL2 format, chain X [auth I] MOL2 format, chain AA [auth J] mmCIF format, chain CA [auth K] mmCIF format, chain I [auth A] mmCIF format, chain M [auth B] mmCIF format, chain O [auth C] mmCIF format, chain R [auth D] mmCIF format, chain U [auth H] mmCIF format, chain X [auth I] mmCIF format, chain AA [auth J]	AA [auth J] CA [auth K] I [auth A] M [auth B] O [auth C] AA [auth J], CA [auth K], I [auth A], M [auth B], O [auth C], R [auth D], U [auth H], X [auth I]	NICOTINAMIDE-ADENINE-DINUCLEOTIDE C₂₁ H₂₇ N₇ O₁₄ P₂ BAWFJGJZGIEFAR-NNYOXOHSSA-N		Interactions Focus chain AA [auth J] Focus chain CA [auth K] Focus chain I [auth A] Focus chain M [auth B] Focus chain O [auth C] Focus chain R [auth D] Focus chain U [auth H] Focus chain X [auth I] Interactions & Density Focus chain AA [auth J] Focus chain CA [auth K] Focus chain I [auth A] Focus chain M [auth B] Focus chain O [auth C] Focus chain R [auth D] Focus chain U [auth H] Focus chain X [auth I]
ADN Query on ADN Download Ideal Coordinates CCD File SDF format, chain BA [auth J] SDF format, chain N [auth B] SDF format, chain P [auth C] SDF format, chain S [auth D] SDF format, chain V [auth H] SDF format, chain Y [auth I] SDF format, chain J [auth A] SDF format, chain DA [auth K] MOL2 format, chain BA [auth J] MOL2 format, chain N [auth B] MOL2 format, chain P [auth C] MOL2 format, chain S [auth D] MOL2 format, chain V [auth H] MOL2 format, chain Y [auth I] MOL2 format, chain J [auth A] MOL2 format, chain DA [auth K] mmCIF format, chain BA [auth J] mmCIF format, chain N [auth B] mmCIF format, chain P [auth C] mmCIF format, chain S [auth D] mmCIF format, chain V [auth H] mmCIF format, chain Y [auth I] mmCIF format, chain J [auth A] mmCIF format, chain DA [auth K]	BA [auth J] DA [auth K] J [auth A] N [auth B] P [auth C] BA [auth J], DA [auth K], J [auth A], N [auth B], P [auth C], S [auth D], V [auth H], Y [auth I]	ADENOSINE C₁₀ H₁₃ N₅ O₄ OIRDTQYFTABQOQ-KQYNXXCUSA-N		Interactions Focus chain BA [auth J] Focus chain DA [auth K] Focus chain J [auth A] Focus chain N [auth B] Focus chain P [auth C] Focus chain S [auth D] Focus chain V [auth H] Focus chain Y [auth I] Interactions & Density Focus chain BA [auth J] Focus chain DA [auth K] Focus chain J [auth A] Focus chain N [auth B] Focus chain P [auth C] Focus chain S [auth D] Focus chain V [auth H] Focus chain Y [auth I]
PO4 Query on PO4 Download Ideal Coordinates CCD File SDF format, chain EA [auth K] SDF format, chain FA [auth K] SDF format, chain K [auth A] SDF format, chain L [auth A] SDF format, chain T [auth D] SDF format, chain W [auth H] SDF format, chain Z [auth I] SDF format, chain Q [auth C] MOL2 format, chain EA [auth K] MOL2 format, chain FA [auth K] MOL2 format, chain K [auth A] MOL2 format, chain L [auth A] MOL2 format, chain T [auth D] MOL2 format, chain W [auth H] MOL2 format, chain Z [auth I] MOL2 format, chain Q [auth C] mmCIF format, chain EA [auth K] mmCIF format, chain FA [auth K] mmCIF format, chain K [auth A] mmCIF format, chain L [auth A] mmCIF format, chain T [auth D] mmCIF format, chain W [auth H] mmCIF format, chain Z [auth I] mmCIF format, chain Q [auth C]	EA [auth K] FA [auth K] K [auth A] L [auth A] Q [auth C] EA [auth K], FA [auth K], K [auth A], L [auth A], Q [auth C], T [auth D], W [auth H], Z [auth I]	PHOSPHATE ION O₄ P NBIIXXVUZAFLBC-UHFFFAOYSA-K		Interactions Focus chain EA [auth K] Focus chain FA [auth K] Focus chain K [auth A] Focus chain L [auth A] Focus chain Q [auth C] Focus chain T [auth D] Focus chain W [auth H] Focus chain Z [auth I] Interactions & Density Focus chain EA [auth K] Focus chain FA [auth K] Focus chain K [auth A] Focus chain L [auth A] Focus chain Q [auth C] Focus chain T [auth D] Focus chain W [auth H] Focus chain Z [auth I]