selD review notes

• P59392 is a reviewed SelD-family selenide, water dikinase (selenophosphate
  synthetase; EC 2.7.9.3). [file:PSEPK/selD/selD-uniprot.txt
  "Synthesizes selenophosphate from selenide and ATP."]
• The cached literature states the established bacterial reaction directly:
  selenophosphate is made from selenide and ATP by SelD. PMID:7665581
• PANTHER places P59392 in PTHR10256:SF0, whose display name says "INACTIVE
  SELENIDE, WATER DIKINASE-LIKE PROTEIN-RELATED." This label is internally
  inconsistent because the same subfamily contains numerous proteins named
  bacterial SelD, while P59392 retains the catalytic cysteine and mapped
  ATP/Mg2+ contacts. [file:interpro/panther/PTHR10256/PTHR10256-entries.csv
  "P59392,\"Selenide, water dikinase\""]
• Review boundary: SelD supplies selenophosphate to SelA. No downstream
  selenoprotein activity is attributed to SelD.