>sp|Q93SX1|PETD_NOSS1 Cytochrome b6-f complex subunit 4 OS=Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576) OX=103690 GN=petD PE=1 SV=1 MATHKKPDLSDPTLRAKLAKGMGHNYYGEPAWPNDLLYVFPIVIMGSFACIVALAVLDPAMTGEPANPFATPLEILPEWY LYPVFQILRSLPNKLLGVLAMASVPLGLILVPFIENVNKFQNPFRRPVATTVFLFGTLVTLWLGIGAALPLDKSLTLGLF