RpcG family


Fusion protein with C-term and N-term parts showing similarity to PecE and PecF but different function in vivo: RpcG attaches a PEB and isomerises it to PUB at cys-84 of alpha-PC. Found only in some marine cyanobacteria.


  • 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.

Gene Locus tag Genbank Species Strain PBP in rods Pigment type Remark Length Last change
RpcG family Syncc9605_0418 YP_380749.1 Synechococcus sp. CC9605 PC+PEI+PEII 3c 492 09-26-2011
RpcG family SYNW2025 NP_898116.1 Synechococcus sp. WH8102 PC+PEI+PEII 3c 466 09-26-2011
RpcG family BL107_08866 ZP_01469876.1 Synechococcus sp. BL107 PC+PEI+PEII 3dA/CA4-A 459 09-26-2011
RpcG family RS9916_40131 ZP_01473069.1 Synechococcus sp. RS9916 PC+PEI+PEII 3dA/CA4-A 467 09-26-2011
RpcG family CwatDRAFT_0661 ZP_00518422.1 Crocosphaera watsonii WH8501 PC+PEI Although this genome also contains rpcE/F genes, WH8501 has been shown that alpha-PC attaches a PUB (Swanson et al. 1991). So the role of rpcE/F genes is unclear. 473 08-30-2012

Model strain Model strains, Marine strains

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