TABLE 1.
Phycobilisome linker polypeptides of Synechococcus sp. strain WH8102 as derived from genomic analysis and classified according to their predicted molecular masses (without phycobilins)a
| ORF no. | Predicted molecular mass (Da) | Chromo- phorylated | Gene | Proposed function of product |
|---|---|---|---|---|
| SYNW0486 | 104,989 | Yes | apcE | AP-LCM |
| SYNW2000 | 59,409 | Yes | mpeD | PEI/II-LR59 |
| SYNW1999 | 33,147 | No | cpeC | PEI-LR33.1 |
| SYNW1989 | 32,805 | Yes | mpeE | PEII-LR32.8 |
| SYNW2010 | 31,953 | Yes | mpeC | PEII-LR32 |
| SYNW0314 | 28,340 | No | cpcG1 | PC-LRC28.3 |
| SYNW1997 | 28,102 | No | cpcG2 | PC-LRC28.1 |
| SYNW2001 | 27,055 | No | cpeE | PEI-LR27 |
| SYNW0483 | 7,714 | No | apcC | AP-LC7.7 |
a
The two novel linkers are shown in bold letters. A function is proposed for each linker, following the international nomenclature for phycobiliproteins. The abbreviations AP, PEI, PEII, and PC indicate allophycocyanin, phycoerythrin I, phycoerythrin II, and phycocyanin, respectively. LLCM, LR, and LRC correspond to core-membrane linker, rod linker, and rod-core linker, respectively. The superscript numbers correspond to the molecular masses in kilodaltons.