Complete Glycine/Serine synthesis pathways in deep-branching bacteria and archaea.

Notes:
aGlx = Glyoxylate pathways (rxn 12),
bOx = Oxidative pathway (rxns 9–11),
cRed = Reductive pathway (rxns 1–8),
dRed(-2) = Reductive pathway missing only rxn 2,
eGlyC = Glycine cycle (rxns 5–8),
fFDH = Formate dehydrogenase (rxn 1),
g18 archaeal strains that lack only reaction 5 in the glycine cycle were included. For 7 such sulfulobales and the acidilobale a BLASTp search finds a protein that closely matches to this protein in strains not missing it.