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. 2003 Jan;131(1):155–166. doi: 10.1104/pp.012658

Table I.

N-terminal and peptide sequences of the glycoprotein, α - and β -megaspermin

Glycoprotein
 N-T EACSASEQASAYTSMVGLLQGTALSTCASDSGYNMLYA
 T1 SLADNFEPGCTSSHyPA*DAHyPVA**AAHyPS
 T2 SLADNFEPGCTSSPA*DAPVA**AAPSP
 T3 VDACHELIK
 T4 YATSLPTAEQTAAMCK
 T5 NVQATNPPDCDLNIPTSGAVMNVK
 T6 EACSASEQASAYTSMVGLLQGTALST
 V8-1 QTAAMCKVDACHE
 V8-2 LIKNVQATNPPDCDLNIPTSGAVMNVKSLADNFEPG*TSS*A*DA*VA
 V8-3 VGLLQGTALSTCASDSGYNML
 V8-4 EACSASEQASAYTSMVGLLQGTALSTCASDSGYNMLYATSLPTA
 Ps EACSASEQASAYTSMVGLLQGTALSTCASDSGYNMLYATSLPTAEQTAAMCKVDACHELIKNVQATNPPDCDLNIPTSGAVM  NVKSLADNFEPGCTSS(P/HyP)A*DA(P/HyP)VA**AA(P/HyP)SP
α-Megaspermin
 N-T TTCTTTQQTAAYVALVSILSDASFNQCATDSGYSMLTATS
 T1 LMCASTACNSMIAK
 T2 IITLNAPDCELTVPTSGLVLNVYSYA
 T3 TTCTTTQQTAAYVALVSILSDASFNQCATDSGYSMLTATSLPTTDQY
 Ps TTCTTTQQTAAYVALYSILSDASFNQCATDSGYSMLTATSLPTTDQYKLMCASTACNSMIAKIITLNAPDCELTVPTSGLVLNVYSYA
β-Megaspermin
 N-T TACTATQQTAAYKTLVSILSDASFNKCSTDSGYSMLTAKALPTNAQYKLMCAST

The glycoprotein was digested with trypsin (T) or V8 protease (V8), and α -megaspermin with trypsin. The nos. refer to the peptides in Figure 1. N-T, N-terminal sequencing of the protein. *, Lack of amino acid detection. HyP, Hydroxy-Pro; (P/hyP), Pro or HyP. A partial primary structure (Ps) was deduced from peptide alignment for the glycoprotein and after comparison with capsicein amino acid sequence for α -megapsermin.