RpcT family


Gene name proposed by Six et al. (2007). This enzyme is not formerly biochemically characterized yet, but indirect evidence suggests that it attaches a PEB at Cys-153 of beta-PC (Blot et al. 2009). RpcT is a paralog of CpcT, and they are located in different positions of the PBS rod region of marine Synechococcus spp. (Six et al. 2007, Grébert et al. 2022). Interestingly, strain RS9916 possesses both RpcT and CpcT, confirming the paralogy.


  • Blot et al., 2009. Phycourobilin in Trichromatic Phycocyanin from Oceanic Cyanobacteria Is Formed Post-translationally by a Phycoerythrobilin Lyase-Isomerase J Biol Chem, 284, 9290-9298.
  • Grébert et al., 2022. Diversity and evolution of pigment types in marine Synechococcus cyanobacteria Genome Biol Evol, 14, evac035.
  • Six et al., 2007. Diversity and evolution of phycobilisomes in marine Synechococcus spp.: a comparative genomics study Genome Biol, 8, R259.

Gene Locus tag Genbank Species Strain PBP in rods Pigment type Remark Length Last change
RpcT family sync_0487 YP_729714.1 Synechococcus sp. CC9311 PC+PEI+PEII 3dA/CA4-A 196 09-26-2011
RpcT family Syncc9605_0419 YP_380750.1 Synechococcus sp. CC9605 PC+PEI+PEII 3c 192 09-26-2011
RpcT family SH8109_0091 ZP_05790483.1 Synechococcus sp. WH8109 PC+PEI+PEII 3bB 197 09-26-2011
RpcT family SYNW2024 NP_898115.1 Synechococcus sp. WH8102 PC+PEI+PEII 3c 197 09-26-2011
RpcT family Syncc9902_1910 YP_377911.1 Synechococcus sp. CC9902 PC+PEI+PEII 3dA/CA4-A 200 09-26-2011
RpcT family BL107_08871 ZP_01469877.1 Synechococcus sp. BL107 PC+PEI+PEII 3dA/CA4-A 192 09-26-2011
RpcT family SynWH7803_0478 YP_001224201.1 Synechococcus sp. WH7803 PC+PEI+PEII 3a 197 09-26-2011
RpcT family RS9916_40136 ZP_01473070.1 Synechococcus sp. RS9916 PC+PEI+PEII 3dA/CA4-A RS9916 possesses both cpcT and RpcT. 197 09-21-2012
RpcT family Syn8016DRAFT_2741 ZP_08957394.1 Synechococcus sp. WH8016 PC+PEI+PEII 3aA 196 11-04-2011
RpcT family SynWH8020_rpcT AAA27347.1 Synechococcus sp. WH8020 PC+PEI+PEII 3dA/CA4-A ORF196 in Wilbanks et al. (1993) 196 08-27-2012

Model strain Model strains, Marine strains

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