ISDA: 7ZD2

Deposition Date 2022-03-29

Release Date 2023-04-19

Last Version Date 2024-10-30

Entry Detail

PDB ID:

7ZD2

Keywords:

HYDROLASE

Title:

Crystal structure of Pseudomonas aeruginosa S-adenosyl-L-homocysteine hydrolase inhibited by Co2+ ions.

Biological Source:

Source Organism:

Pseudomonas aeruginosa PAO1 (Taxon ID: 208964)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.16 Å

R-Value Free:

0.22

R-Value Work:

0.17

R-Value Observed:

0.18

Space Group:

C 1 2 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Adenosylhomocysteinase
Gene (Uniprot):ahcY
Chain IDs:A, B, C, D
Chain Length:472
Number of Molecules:4
Biological Source:Pseudomonas aeruginosa PAO1

UniProt ID:Q9I685 Pfam ID:PF05221, PF00670 EC:3.3.1.1

Ligand Molecules

ADN

BU1

HEZ

NAD

PDO

Primary Citation

A closer look at molecular mechanisms underlying inhibition of S -adenosyl-L-homocysteine hydrolase by transition metal cations.

Gawel, M, Malecki, P.H, Sliwiak, J, Stepniewska, M, Imiolczyk, B, Czyrko-Horczak, J, Jakubczyk, D, Marczak, L, Plonska-Brzezinska, M.E, Brzezinski, K.Show

Chem.Commun.(Camb.) 60 11504 11507 (2024)

PMID: 39230573 DOI: 10.1039/d4cc03143a

Abstact

We report biochemical and structural studies on inhibiting bacterial S-adenosyl-L-homocysteine hydrolase by transition metal cations. Our results revealed diverse molecular mechanisms of enzyme inactivation. Depending on the cation, the mechanism is based on arresting the enzyme in its closed, inactive conformation, disulfide bond formation within the active site or oxidation of the intermediate form of a cofactor.

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