1：Experimental Design and Method Selection:

The study used static and time-resolved spectroscopies, including steady-state absorption and fluorescence at room temperature and 77 K, and femtosecond and nanosecond time-resolved absorption spectroscopy at 77 K.

2：Sample Selection and Data Sources:

The VCP-B3 complex was isolated from the Eustigmatophyte alga FP5 grown under far-red light, purified using clear-native gel electrophoresis. Pigments were extracted and analyzed via HPLC.

3：List of Experimental Equipment and Materials:

Equipment includes UV-1800 spectrophotometer, RF-6000 spectrofluorometer, VNF-100 liquid nitrogen cryostat, Helios-EOS pump-probe spectrometer, Agilent 1100 HPLC system, Zorbax Eclipse XBD-C18 column, PMMA cuvettes, quartz cuvettes, solvents like acetone, methanol, petroleum ether, ACN, MeOH, THF, 2-MTHF.

4：Experimental Procedures and Operational Workflow:

Samples were prepared in glycerol/buffer mixtures or solvents, frozen slowly for cryogenic measurements. TA experiments involved excitation at specific wavelengths (e.g., 485 nm, 510 nm, 660 nm) with controlled pulse energies. Data were corrected for dispersion and globally fitted.

5：Data Analysis Methods:

Data were analyzed using global fitting with sequential or parallel decay models, target analysis with CarpetView software, and spectral reconstruction methods.