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1.B.29.1.4
Oep21 of 167 aas is a voltage-dependent rectifying anion channel that facilitates the translocation between the chloroplast and cytoplasm of phosphorylated carbohydrates such as triosephosphate, 3-phosphoglycerate and inorganic phosphate (Pi), depending on the ATP to triosephosphate ratio in the plastidial intermembrane space; in high triosephosphate/ATP conditions (e.g. photosynthesis), export of triosphophate from chloroplasts occurs (outward rectifying channels), but in high ATP/triosephosphate conditions (e.g., the dark phase), import of phosphosolutes occurs (inward rectifying channels).

Accession Number:Q6ID99
Protein Name:Outer envelope pore protein 21A, chloroplastic
Length:167
Molecular Weight:19782.00
Species:Arabidopsis thaliana (Mouse-ear cress) [3702]
Location1 / Topology2 / Orientation3: Plastid1 / Multi-pass membrane protein2
Substrate

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FASTA formatted sequence
1:	METSLRYATN SRSLKIHAKE KFPVNSKTRL QLHGELDTGA GVPSYFCAMI RYFFHEASTN 
61:	LGVGLHYDKR EKLRCLVRGK KKFPVITDEV VTFNIKGRCD FDQDLVQRNA KGAAEFDWNI 
121:	WKFQKDQDLR LRIGYEMFEK VPYMQIRENN WTFNTNLKGK WNVRYDL