NME/NM23/NDPK and Histidine Phosphorylation

Area of Science:

• Biochemistry
• Cell Biology
• Molecular Biology

Background:

• NME (Non-metastatic) proteins, or NDPKs (nucleoside diphosphate kinases), are evolutionarily conserved enzymes.
• Initially recognized for nucleoside diphosphate kinase activity, some family members also possess protein-histidine kinase activity.
• Studying phosphohistidine modifications has been challenging due to their instability and limited molecular tools.

Purpose of the Study:

• To provide a comprehensive overview of the NME family and histidine phosphorylation.
• To highlight the underappreciated protein-histidine kinase activity of NME members in human cells.
• To summarize structural, functional, and cell signaling aspects of NME family histidine kinases.

Main Methods:

• Review of existing literature on NME family proteins and histidine phosphorylation.
• Discussion of recent methodological advancements for studying unstable phosphohistidine modifications.
• Synthesis of data on NME family structure, function, and signaling pathways.

Main Results:

• NME family members, conserved across species, possess both NDPK and protein-histidine kinase activities.
• New experimental methods have facilitated the investigation of histidine kinase activity.
• Growing scientific interest in NME family's role in cell signaling.

Conclusions:

• NME family proteins play a significant role in cell signaling through histidine phosphorylation.
• Further research is needed to fully elucidate the mechanisms and implications of NME-mediated histidine kinase activity.
• Understanding these pathways is crucial for advancing cell biology and potentially therapeutic strategies.