Protein
Probable pyridoxal 5'-phosphate synthase subunit PDX1.1
Organism
Oryza sativa subsp. japonica
Function
Catalyzes the formation of pyridoxal 5'-phosphate from ribose 5-phosphate (RBP), glyceraldehyde 3-phosphate (G3P) and ammonia. The ammonia is provided by PDX2. Can also use ribulose 5-phosphate and dihydroxyacetone phosphate as substrates, resulting from enzyme-catalyzed isomerization of RBP and G3P, respectively. Also plays an indirect role in resistance to singlet oxygen-generating photosensitizers.
Similarity
Belongs to the PdxS/SNZ family.
Sequence
MATDGTGVVTVYGSGTNGAALLEPSNHKSATFSVKVGLAQMLRGGVIMDVVTPEQARIAEEAGACAVMALERVPADIRAQGGVARMSDPGLIRDIKRAVTIPVMAKARIGHFVEAQILEAIGVDYVDESEVLTLADDAHHINKHNFRVPFVCGCRDLGEALRRIREGAAMIRTKGEAGTGNVVEAVRHVRSVMGDIRALRNMDDDEVFSYAKRIAAPYDLVMQTKQLGRLPVVQFAAGGVATPADAALMMQLGCDGVFVGSGIFKSGDPARRARAIVQAVTHYSDPKILAEVSSGLGEAMVGINLSDPKVERFAARSE