Catalysis of the reaction: NADP+ + xylitol = L-xylulose + H+ + NADPH.
Synonyms:
broad_synonym:
L-xylulose reductase activity
xref:
EC:1.1.1.10; KEGG_REACTION:R01904; MetaCyc:L-XYLULOSE-REDUCTASE-RXN; RHEA:17025; Reactome:R-HSA-5662851 "Defective DCXR does not reduce L-xylulose to xylitol"; reactome:R-HSA-5661240 "DCXR tetramer reduces L-xylulose to xylitol"