CATH Classification

Domain Context

CATH Clusters

Superfamily Janus/Ocnus
Functional Family 14 kDa phosphohistidine phosphatase

Enzyme Information

3.9.1.3
Phosphohistidine phosphatase.
based on mapping to UniProt Q9NRX4
A [protein]-N-phospho-L-histidine + H(2)O = a [protein]-L-histidine + phosphate.
-!- This eukaryotic enzyme dephosphorylates phosphorylated histidine residues within proteins and peptides. -!- The enzyme acts on phosphate groups attached to both the pros- and tele-nitrogen atoms, but the pros- position is somewhat preferred (by a factor of two at the most). -!- The substrate specificity depends on the amino acid sequence or structural context of the phosphohistidine in a phosphoprotein. -!- The enzyme is also active on free phosphoramidate and peptide-bound phospholysine.

UniProtKB Entries (1)

Q9NRX4
PHP14_HUMAN
Homo sapiens
14 kDa phosphohistidine phosphatase

PDB Structure

PDB 2NMM
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of human phosphohistidine phosphatase. Northeast Structural Genomics Consortium target HR1409
Kuzin, A.P., Abashidze, M., Forouhar, F., Seetharaman, J., Kent, C., Fang, Y., Cunningham, K., Conover, K., Ma, L.C., Xiao, R., Acton, T., Montelione, G., Tong, L., Hunt, J.F.
To be Published