7YQ1

Crystal structure of adenosine 5'-phosphosulfate kinase from Archaeoglobus fulgidus in complex with AMP-PNP and APS

Summary for 7YQ1

• Entry DOI: 10.2210/pdb7yq1/pdb
• Descriptor: Adenylyl-sulfate kinase, ADENOSINE-5'-PHOSPHOSULFATE, PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER, ... (7 entities in total)
• Functional Keywords: aps kinase, archaea, transferase
• Biological source: Archaeoglobus fulgidus
• Total number of polymer chains: 6
• Total formula weight: 127045.35

Authors

Kawakami, T.,Teramoto, T.,Kakuta, Y. (deposition date: 2022-08-05, release date: 2023-01-18, Last modification date: 2023-11-29)

Primary citation

Kawakami, T.,Teramoto, T.,Kakuta, Y.
Crystal structure of adenosine 5'-phosphosulfate kinase isolated from Archaeoglobus fulgidus.
Biochem.Biophys.Res.Commun., 643:105-110, 2022

PubMed Abstract: The 3'-phosphoadenosine-5'-phosphosulfate (PAPS) molecule is essential during enzyme-catalyzed sulfation reactions as a sulfate donor and is an intermediate in the reduction of sulfate to sulfite in the sulfur assimilation pathway. PAPS is produced through a two-step reaction involving ATP sulfurylase and adenosine 5'-phosphosulfate (APS) kinase enzymes/domains. However, archaeal APS kinases have not yet been characterized and their mechanism of action remains unclear. Here, we first structurally characterized APS kinase from the hyperthermophilic archaeon Archaeoglobus fulgidus, (AfAPSK). We demonstrated the PAPS production activity of AfAPSK at the optimal growth temperature (83 °C). Furthermore, we determined the two crystal structures of AfAPSK: ADP complex and ATP analog adenylyl-imidodiphosphate (AMP-PNP)/Mg/APS complex. Structural and complementary mutational analyses revealed the catalytic and substrate recognition mechanisms of AfAPSK. This study also hints at the molecular basis behind the thermal stability of AfAPSK.

PubMed: 36592583
DOI: 10.1016/j.bbrc.2022.12.081

Experimental method

X-RAY DIFFRACTION (1.91 Å)