>cd02993 PDI_a_APS_reductase PDIa family, 5'-Adenylylsulfate (APS) reductase subfamily; composed of plant-type APS reductases containing a C-terminal redox active TRX domain and an N-terminal reductase domain which is part of a superfamily that includes N type ATP PPases. APS reductase catalyzes the reduction of activated sulfate to sulfite, a key step in the biosynthesis of sulfur-containing metabolites. Sulfate is first activated by ATP sulfurylase, forming APS, which can be phosphorylated to 3'-phosphoadenosine-5'-phosphosulfate (PAPS). Depending on the organism, either APS or PAPS can be used for sulfate reduction. Prokaryotes and fungi use PAPS, whereas plants use both APS and PAPS. Since plant-type APS reductase uses glutathione (GSH) as its electron donor, the C-terminal domain may function like glutaredoxin, a GSH-dependent member of the TRX superfamily. The flow of reducing equivalents goes from GSH - C-terminal TRX domain - N-terminal reductase domain - APS. Plant-type APS red

Probab=96.79  E-value=0.00042  Score=46.68  Aligned_cols=45  Identities=11%  Similarity=0.213  Sum_probs=36.5

Q ss_pred             CCCEEEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Q ss_conf             9985999965113676631126100000000012333322234443
Q gi|254780212|r   29 GGSKIVLYFYPKDDTSGCTAEAINFSSLKADFDEESTILIGISPDS   74 (157)
Q Consensus        29 ~gk~vvl~f~~~~~tp~C~~e~~~l~~~~~~~~~~gv~vv~is~d~   74 (157)
T Consensus        20 ~~k~~lV~FY-APWCghCk~l~P~~~~lA~~l~~~~v~v~~vd~d~   64 (109)
T cd02993          20 RNQSTLVVLY-APWCPFCQAMEASYEELAEKLAGSNVKVAKFNADG   64 (109)
T ss_pred             CCCCEEEEEE-CCCCHHHHHHHHHHHHHHHHHCCCCCEEEEEECCC
T ss_conf             6998899999-99888888677899999998655897899997787