Nucleoside triphosphatase

Function Nucleoside triphosphatase or nucleoside triphosphate diphosphohydrolase (NTPase) is responsible for degradation of nucleotides to their monophosphate form. NTPase is found in mammals and in pathogenic microbes. In mammals NTPase hs a crucial role in regulation of purinergic signalling by hydrolysis of extracellular nucleotides. The function of NTPase in pathogens is still unknown. Structural highlights The 3D structure of the complex between NTPase 2 and the ATP analog AMPPNP shows the NTPase structure composed of two domains. The structure contains 7 Cys-Cys bonds one of which located between domain I and II and reaching the diametrically positioned monomer was found by mutational analysis to be responsible for activation. The ATP analog - AMPPNP - is located in a cleft and forms interactions with domain I and domain II.

spinqualitylabelsall models NTPase 2 tetramer complex with AMPPNP and Mg++ ion (green) (PDB code 4a5a) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

3D structures of nucleoside triphosphatase3D structures of nucleoside triphosphatase

Updated on 12-May-2020

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• Nucleoside triphosphatase 1
  • 4a57 - TgNTPase 1 - Toxoplasma gondii
    
  • 4a59 - TgNTPase 1 + AMP
    
• Nucleoside triphosphatase 2
  • 4jep - TgNTPase 2
    
  • 4a5b - TgNTPase 2 (mutant)
    
  • 4kh4, 4a5a - TgNTPase 2 (mutant) + AMPPNP
    
  • 4kh5, 4kh6 - TgNTPase 2 (mutant) + AMPNP
    
• Nucleoside triphosphatase Nudi
  • 6dt3 - Nudi - Klebsiella pneumoniae
    
  • 3oga, 3n77 - Nudi - Salmonella enterica
    
• Nucleoside triphosphatase cancer-related
  • 2i3b - NTPase - human- NMR
    
• Nucleoside triphosphatase
  • 3s86 - NTPase - Thermotoga maritima
    
  • 3agr - NTPase - Neospora caninum