Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/94915
Type: Artigo de periódico
Title: Seed Storage Proteins In Coffee
Author: Bau S.M.T.
Mazzafera P.
Santoro L.G.
Abstract: It has been reported that Coffea arabica seeds contain as the main reserve protein, a legumin-like protein, constituted of two subunits, α and β, of approximately 35 and 20 kDa. In this work the seed proteins of several coffee species and varieties were investigated by SDS-PAGE and gel filtration. No differences were observed in the electrophoretic profiles among varieties of C. arabica, however, marked differences were observed among species, or even among individuals of some species. In general, the molecular weight of the subunits α and β accounted for a monomer of 48 to 62 Kda. However, native molecular weight obtained by gel filtration showed that for most of the species there is association of 6 of such proteins, in a hexamer. The most marked difference was observed for C. canephora and C. racemosa. The former clearly showing isoforms of the subunits, and the later showing absence of the β subunit. The influence of proteases in this observations is discussed.
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Rights: aberto
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0034939156&partnerID=40&md5=9e9b1c30b3dbed07a3c05a022d21b280
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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