Table III.
Main Transfer Rates in Pico Seconds (ps) Between Pairs of Chromophores in an Antenna of Two Hexameric Phycoerythrins and Two Hexameric Phycocyanins of a Phycobilisomea, Shown for One-Third of the Antennab
| 1 | Chromophore | PE (ps) intratrimer | PE (ps) intertrimer | PE/PE (ps) interface | PE/PC (ps) interface | PC (ps) intratrimer | PC (ps) intertrimer | PC/PC (ps) interface |
|---|---|---|---|---|---|---|---|---|
| K → P(a) | α82/β82 | 7 | ||||||
| K ← K(b) | α82/α139 | 35 | ||||||
| P → P(c) | β50/β82 | 104 | ||||||
| P → P(d) | β50/β158 | 43 | ||||||
| P → A(e) | β50/α 82 | 69 | ||||||
| P → B(f) | β82/β 82 | 85 | ||||||
| A → P(g) | α139/β158 | 66 | ||||||
| A → P(h) | α82/β50 | 89 | ||||||
| B → N(i) | β82/β50 | 65 | ||||||
| B → N(j) | β82/β82 | 142 | ||||||
| D → C(k) | β82/α82 | 27 | ||||||
| E → F(l) | α82/β84 | 63 | ||||||
| E → A(m) | α82/α82 | 47 | ||||||
| D → A(n) | β82/α82 | 97 | ||||||
| C → B(o) | β82/β84 | 24 | ||||||
| A ←→ F(p) | α84/β84 | 2 | ||||||
| F ←→ F(q) | β153/β84 | 240 | ||||||
| C → K(r) | α82/α82 | 32 | ||||||
| B → K(s) | β153/α82 | 135 | ||||||
| L → P(t) | α82/β84 | 177 | ||||||
| P → L(u) | β84/β84 | 5 | ||||||
| K → L(v) | α82/β84 | 65 | ||||||
| M → K(w) | α82/α82 | 230 |
a
On the left, the names of the subunits are indicated as well as a letter in parenthesis that identify each path in Figure 4. The chromophores involved in the transition are also indicated in the table.
b
The complete molecule can be rebuilt by symmetry and also a complete picture of the energy transfer possibilities.
Abbreviations: APC, allophycocyanin; PBS, phycobilisome; PC, phycocyanin; PE, phycoerythrin; PEB, phycoerythrobilin; PCB, phycocyanobilin; PUB, phycourobilin.