>sp|A5GU20|ACSF_SYNR3 Magnesium-protoporphyrin IX monomethyl ester [oxidative] cyclase OS=Synechococcus sp. (strain RCC307) GN=acsF PE=3 SV=1 MVPPTAIAEASRSGGEPAIKDPVKDTILTPRFYTTDFEAMAAMDLRPNQEELEAICEEFR KDYNRHHFVRNEAFDGAADKLDPETRRVFVEFLEQSCTSEFSGFLLYKELSRRIKQKNPL LAECFAHMARDEARHAGFLNKAMGDFGVQLDLGFLTANKAYTFFKPKFIFYATYLSEKIG YWRYIAIYRHLEQNPDSKIFPIFNFFENWCQDENRHGDFFDALMKAQPSSVRGLQARLWC RFFLLAVFATMYVRDVARKEFYEALGLDAREYDKYVIAKTNETSARVFPVVLNVDHPKFY ERLERIVGNNNALSQADASGASAPVRLLRKLPFWGANALEMAKLFFAAPIRSENYQPAIR