Table 3.

Heterosigma akashiwo signal peptides

Precursor Protein	Accession Number	Signal peptide	Beginning of STD
RpoD	EF115377	VAHCTTFAYKGSNMRSHFFFMLWSVSVAATAA	FMMPGR...
Fcp1	X99697	MSLKLATLAAALMGASA	FVAPNKM...
Fcp2	EF115376	VVFDLYASTIPSVNQAHKSKMSLKLATFAAALAGASA	FVAPNQM...
PRK	EF115375	MMYKLATLLALLPAVVA	FTTSFNG...
PsbO	AY130990	MKFVAVLVCLMVSAVVA	FKTQRN...

Heterosigma akashiwo RNA polymerase D subunit (RpoD), fucoxanthin chlorophyll binding protein 1 (Fcp1), fucoxanthin chlorophyll binding protein 2 (Fcp2), phosphoribulose kinase (PRK), and 33 kDa oxygen-enhancer 1 protein (PsbO) precursors showing the signal peptide and the start of stromal targeting domain (STD). The conserved phenalynine (F) indicating the beginning of stromal targeting domain [62, 97, 98] is marked in bold.