EC Number   |
General Information |
Reference |
|---|
    2.7.1.35 | more |
a FIxxIIxL motif at the C-terminus of the disordered repeat motif (XNXH)m that is implicated in binding the WD40 domain and may provide temporal control of PfPdxK through an interaction with a E3 ligase complex. Molecular docking and modelling, overview. Binding structure of AMP-PNP with PdxK |
759093 |
| 2.7.1.35 | more |
analysis of the binding structures of substrates and products from PdxK-ligand crystal structures, overview |
-, 759346 |
| 2.7.1.35 | physiological function |
biotransformation of pyridoxal to pyridoxal 5'-phosphate (PLP) by pyridoxal kinase (pdxY) supports cadaverine production in Escherichia coli. PLP is an essential cofactor of lysine decarboxylase and the major bottleneck in the cadaverine biosynthesis pathway |
759126 |
| 2.7.1.35 | more |
comparison of the structure of apo StPLK with its ligand-bound forms |
759183 |
| 2.7.1.35 | more |
experimental resurrection of the last common ancestor of the hydroxymethyl pyrimidine kinase group based on comparison of hydroxymethyl pyrimidine and pyridoxal kinases. Probably the last common ancestor was not able to use pyridoxal under physiological conditions. The pyridoxal kinase activity present in the current bifunctional enzymes must have appeared in a convergent event independently of the pyridoxal kinase activity of pdxY and pdxK genes. Substrate pyridoxal is 8-times less preferred than the phosphorylation of hydroxymethyl pyrimidine by the last ancestor |
738234 |
| 2.7.1.35 | malfunction |
in Drosophila, mutations in the dPdxk gene cause chromosome aberrations (CABs) and increased glucose content in larval hemolymph. The phenotype is rescued by the expression of wild-type human PDXK enzyme, although not by human PDXK mutants D87H, V128I, H246Q, and A243G |
760178 |
| 2.7.1.35 | physiological function |
in eukaryotes, pyridoxal kinase (PDXK) acts in vitamin B6 salvage pathway to produce pyridoxal 5'-phosphate (PLP), the active form of the vitamin, which is implicated in numerous crucial metabolic reactions. PDXK converts PLP precursors such as pyridoxal (PL), pyridoxamine (PM) and pyridoxine (PN) taken from food into PLP, PMP and PNP, respectively. PNPO catalyzes the oxidation of PMP and PNP into PLP. PLP performs many functions by working as coenzyme for a wide number of enzymes which control amino acid, lipid and carbohydrate metabolism |
760178 |
| 2.7.1.35 | more |
in silico analysis of the human and parasite PdxK structure revealing significant differences in the active site region, LdPdxK homology modeling using pyridoxal kinase from Trypanosoma brucei (PDB ID 3ZS7) as a template, molecular dynamics and molecular docking, overview |
-, 759342 |
| 2.7.1.35 | evolution |
PdxK belongs to ribokinase enzyme family in which either cysteine or aspartate act as catalytic residue for its activity. The known catalytic mechanism of ribokinase family and for PdxK is the in line displacement mechanism in which hydroxyl group of the substrate is activated by a catalytic base (aspartate) of the enzyme, to make the nucleophilic attack on the gamma-phosphate group of ATP. The active site residues Leu43, Ser47, Ile52, Arg56, Asn87 and Thr227 present in LdPdxK are replaced with Phe43, Thr47, Try52, Val56, Arg86 and Val231 in mammalian PdxKs |
-, 759346 |
| 2.7.1.35 | physiological function |
pyridoxal kinase (PdxK) is an important enzyme of the vitamin B6 salvage pathway which is required for phosphorylation of B6 vitamers |
-, 759342 |
