ISSN:
1573-4943
Keywords:
Lupin
;
11S globulin
;
legumin
;
peptide mapping
;
amino acid sequence
;
glycosylation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Ion exchange-HPLC under denaturing conditions was used to purify to homogeneity the majorM r 44,000α subunit of lupin seed (Lupinus albus, L.) 11S storage globulin (legumin). The carboxymethylated subunit was digested with trypsin and the peptide fragments separated by reverse phase HPLC. Only one glycosylated peptide reacting with concanavalin A was identified by dot-blotting. Its amino acid sequence allowed the location of this peptide within a highly conserved region in proximity to the N-terminus of theα subunits of the 11S globulins from other seeds. The unique presence of a serine residue in a sequence N-X-S of lupin 11S globulin, compared with all other 11S proteins, allows it to be the only protein of this class to bear covalently linked carbohydrate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01888368
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