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Sulfate Assimilation Pathways in Plants.
Sulfate can be assimilated in a reduction pathway to Cys (left) or via PAPS to sulfated compounds (right). The enzymes are shown in italics; APK is shown in bold. SULTR, sulfate transporter; SiR, sulfite reductase; SAT, Ser acetyltransferase; OASTL, O-acetylserine (thiol) lyase; SOT, sulfotransferase; PAP, adenosine-3′,5′-bisphosfate; R, acceptor molecule.
