MpeV family
[fasta] [only sure] [only unsure]
Description
MpeV is present only in marine Synechococcus strains belonging to pigment type 3dA, one of the two kinds of type IV chromatic acclimaters. MpeV has been biochemically characterized as a PEB:Cys-50,61 β-PEI and β-PEII lyase-isomerase in Synechococcus strain RS9916 (Carrigee et et al. 2021). Of note, the Cys-50-61 β-PEI of another 3dA strain WH8020 binds a PEB and not a PUB (Ong & Glazer, 1991). This discrepancy has been associated with the occurrence of a histidine at position 141 of the PEI β-subunit from WH8020, instead of a leucine in its counterpart from RS9916: this histidine was found to prevent the isomerization activity of MpeV (Carrigee et al. 2022).
References
- Carrigee et al., 2021. MpeV is a lyase isomerase that ligates a doubly linked phycourobilin on the β-subunit of phycoerythrin I and II in marine Synechococcus J Biol Chem, 296, 100031.
- Carrigee et al., 2022. The phycoerythrobilin isomerization activity of MpeV in Synechococcus sp. WH8020 is prevented by the presence of a histidine at position 141 within its phycoerythrin-I β-subunit substrate Front Microbiol, 13, 893413.
- Ong et al., 1991. Phycoerythrins of marine unicellular cyanobacteria. I. Bilin types and locations and energy transfer pathways in Synechococcus spp. phycoerythrins J Biol Chem, 266, 9515-9527.
| Gene | Locus tag | Genbank | Species | Strain | PBP in rods | Pigment type | Remark | Length | Last change |
|---|---|---|---|---|---|---|---|---|---|
| MpeV family | sync_0497 | YP_729724.1 | Synechococcus sp. | CC9311 | PC+PEI+PEII | 3dA/CA4-A | 301 | 04-20-2023 | |
| MpeV family | Syncc9902_1901 | YP_377902.1 | Synechococcus sp. | CC9902 | PC+PEI+PEII | 3dA/CA4-A | 293 | 04-20-2023 | |
| MpeV family | BL107_08916 | ZP_01469886.1 | Synechococcus sp. | BL107 | PC+PEI+PEII | 3dA/CA4-A | 308 | 04-20-2023 | |
| MpeV family | RS9916_40196 | ZP_01473082.1 | Synechococcus sp. | RS9916 | PC+PEI+PEII | 3dA/CA4-A | 297 | 04-20-2023 | |
| MpeV family | SynRCC307_2056 | YP_001228312.1 | Synechococcus sp. | RCC307 | PC+PEI+PEII | 3eA | 304 | 04-20-2023 | |
| MpeV family | SynW8020_mpeV | AAA27339.1 | Synechococcus sp. | WH8020 | PC+PEI+PEII | 3dA/CA4-A | 301 | 04-20-2023 |
Model strains, Marine strains
Last update: 21 Apr 2023 5:54:10
