CpeU family


No member of this putative phycobilin lyase has been fully biochemically characterized yet. Given its gene environment (see e.g. Grébert et al. 2022), this is probably a PEB:PEI lyase, but the cysteinyl residue chromophorylated by this enzyme is unknown yet. In marine Synechococcus pigment type 3 strains, it may also act on the corresponding site of PEII, at least in low-PUB strains.


Gene Locus tag Genbank Species Strain PBP in rods Pigment type Remark Length Last change
CpeU-I subfamily S7335_5494 ZP_05039049.1 Synechococcus sp. PCC7335 PC+PEI CA3 185 11-25-2011
CpeU-I subfamily PCC7424_5736 YP_002381031.1 Cyanothece sp. PCC7424 PC+PEI 2 197 11-25-2011
CpeU-I subfamily PCC8801_4521 YP_002364799.1 Cyanothece sp. PCC8801 PC+PEI 2 194 11-25-2011
CpeU-I subfamily Cyan7822_4040 YP_003889240.1 Cyanothece sp. PCC7822 PC+PEI 2 196 11-25-2011
CpeU-I subfamily glr1259 NP_924205.1 Gloeobacter violaceus PCC7421 PC+PEI 2 197 11-25-2011
CpeU-I subfamily GL6909_3539 Gloeothece sp. PCC6909/1 PC+PEI 2 190 11-25-2011
CpeU-I subfamily Npun_R0731 YP_001864426.1 Nostoc punctiforme ATCC29133 (PCC73102) PC+PEI 2 191 11-25-2011
CpeU-I subfamily Tery_4111 YP_723592.1 Trichodesmium erythraeum IMS101 PC+PEI 193 11-25-2011
CpeU-I subfamily LYNGBM3L_55920 ZP_08427738.1 Lyngbya majuscula 3L PC+PEI 2 197 11-25-2011
CpeU-I subfamily AAQ63051 AAQ63051.1 Fremyella diplosiphon (Tolypothrix sp. / Calothrix sp.) Fd33 (UTEX481/PCC7601) PC+PEI CA3 orf2 in pebAB operon. N-term shortened (14 aa removed: MKCEVSSHFIRGAV) 195 09-16-2012
CpeU-I subfamily MICAI_380008 ZP_10229445.1 Microcystis sp. T1-4 PC+PEI 2 196 08-22-2012
CpeU-I subfamily Ple7327_2703 YP_007081540.1 Pleurocapsa sp. PCC7327 PC+PEI 176 04-22-2013
CpeU-I subfamily GLO73106DRAFT_00035880 ZP_21049296.1 Gloeocapsa sp. PCC73106 PC+PEI 181 04-24-2013
CpeU-I subfamily Ple7327_1060 YP_007080032.1 Pleurocapsa sp. PCC7327 PC+PEI 195 04-24-2013
CpeU-I subfamily Mic7113_4742 YP_007123821.1 Microcoleus sp. PCC7113 PC+PEI 2 204 04-24-2013
CpeU-I subfamily Lepto7376_3000 YP_007072075.1 Leptolyngbya sp. PCC7376 PC+PEI 191 04-24-2013
CpeU-I subfamily ZP_18907671 ZP_18907671.1 Leptolyngbya sp. PCC7375 PC+PEI 2 196 04-24-2013
CpeU-I subfamily Cha6605_4060 YP_007098543.1 Chamaesiphon minutus PCC6605 PC+PEI 186 04-29-2013
CpeU-I subfamily Sta7437_0247 YP_007130830.1 Stanieria cyanosphaera PCC7437 PC+PEI 187 04-29-2013
CpeU-I subfamily Cal6303_1003 YP_007136040.1 Calothrix sp. PCC6303 PC+PEI 2 202 04-29-2013
CpeU-I subfamily Xen7305DRAFT_00018880 ZP_21056337.1 Xenococcus sp. PCC7305 PC+PEI 187 04-29-2013
CpeU-I subfamily Osc7112_1019 YP_007113993.1 Oscillatoria nigro-viridis PCC7112 PC+PEI 2 196 04-29-2013
CpeU-I subfamily Pse7367_3939 YP_007083590.1 Pseudanabaena sp. PCC7367 PC+PEI 197 04-29-2013
CpeU-I subfamily Osc10802DRAFT_3769 Oscillatoria sp. PCC10802 PC+PEI 198 06-12-2013
CpeU-II subfamily sync_0492 YP_729719.1 Synechococcus sp. CC9311 PC+PEI+PEII 3dA/CA4-A 200 11-25-2011
CpeU-II subfamily Syncc9605_0424 YP_380755.1 Synechococcus sp. CC9605 PC+PEI+PEII 3c 203 11-25-2011
CpeU-II subfamily SH8109_0086 ZP_05788514.1 Synechococcus sp. WH8109 PC+PEI+PEII 3bB 203 11-25-2011
CpeU-II subfamily SYNW2019 NP_898110.1 Synechococcus sp. WH8102 PC+PEI+PEII 3c 204 11-25-2011
CpeU-II subfamily Syncc9902_1905 YP_377906.1 Synechococcus sp. CC9902 PC+PEI+PEII 3dA/CA4-A 205 11-25-2011
CpeU-II subfamily BL107_08896 ZP_01469882.1 Synechococcus sp. BL107 PC+PEI+PEII 3dA/CA4-A N-term extended (8 aa added) 205 09-17-2012
CpeU-II subfamily SynWH7803_0483 YP_001224206.1 Synechococcus sp. WH7803 PC+PEI+PEII 3a possible alternative start would make the sequence 2 aa longer (MP) 201 09-17-2012
CpeU-II subfamily WH7805_06731 ZP_01123346.1 Synechococcus sp. WH7805 PC+PEI 2 N-term extended (8 aa added) 193 09-17-2012
CpeU-II subfamily RS9916_40166 ZP_01473076.1 Synechococcus sp. RS9916 PC+PEI+PEII 3dA/CA4-A N-term extended (10 aa added) 208 09-17-2012
CpeU-II subfamily SynRCC307_2060 YP_001228316.1 Synechococcus sp. RCC307 PC+PEI+PEII 3eA 202 11-25-2011
CpeU-II subfamily SCB02_010100004388 ZP_07970147.1 Synechococcus sp. CB0205 PC+PEI 2 MIVEASFVVPMS not present in refseq 206 11-25-2011
CpeU-II subfamily Syn8016DRAFT_2746 ZP_08957399.1 Synechococcus sp. WH8016 PC+PEI+PEII 3aA N-term shortened by 22aa (METVPTFQSNGPMTVSDSSLEV) 204 11-25-2011
CpeU-II subfamily SynWH8020_CpeUII AAA27342.1 Synechococcus sp. WH8020 PC+PEI+PEII 3dA/CA4-A ORF200 in Wilbanks et al. (1993) 200 08-27-2012

Model strain Model strains, Marine strains

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