Table I.

Comparison of NtSPSA to C protein sequences in the regions of the regulatory phosphorylation sites

Sequences were aligned using ClustalW (http://ebi.ac.uk/clustalw/). Residues matching the consensus sequences (Huber and Huber, 1996) are shown in bold (B, basic; H, hydrophobic). Spinach SPS (SoSPS) was included as a reference sequence.

ProteinSer-158Ser-229Ser-424
ConsensusXXBHXBXXSXXXHHXRXXSXPBHXBXXS
SoSPS150-KGRMRRISSVEMM224-LTRQVSAP418-RMRRGVS
NtSPSA142-KGRLPRISSVETM216-LTRQVSSP410-RIKRNVS
NtSPSB149-RKRFQRNFSNLEV221-FTRQIAST415-RARRGVN
NtSPSC171-HHVISRINSVTQM243-LTRQITSP431-RRRRGVS