Purification and characterisation of gelonin from seeds of Gelonium multiflorum.
Indian J Biochem Biophys
;
1999 Aug; 36(4): 258-65
Article
Dans Anglais
| IMSEAR
| ID: sea-27072
ABSTRACT
Gelonin, a ribosome-inactivating protein has been isolated from the seeds of Gelonium multifluorum of Euphorbiaceae family by two methods and the results are compared. In method-I conventional aqueous extraction, cation-exchange and gel-filtration chromatography has been used. In method-II S-Sepharose fast flow gel has been used to purify the proteins from the seed extract, followed by ammonium sulfate fractionation, cation-exchange and gel-filtration chromatography. Extensive physico-chemical and immunological characterizations show that molecular weight of gelonin as determined by gel-filtration chromatography and SDS-PAGE is approximately 30 kDa. The non-proteinous material which binds to CMC-gel in association with gelonin in method-I is substantially removed when gelonin is purified by method-II. Cation exchange, G-100 chromatography, RP-HPLC and SDS-PAGE show that method-II yields 50% more purified gelonin when compared to the yield by method-I. The immunoreactivity of gelonin obtained by methods I and II vary from 22-26% and 50-66% respectively and the ribosome-inactivating property vary from 46-56% and 70-87% respectively.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Protéines végétales
/
Plantes
/
Graines
/
Chromatographie sur gel
/
Chromatographie en phase liquide à haute performance
/
Réactions croisées
/
Électrophorèse sur gel de polyacrylamide
/
Protéines inactivant les ribosomes de type 1
/
Masse moléculaire
langue:
Anglais
Texte intégral:
Indian J Biochem Biophys
Année:
1999
Type:
Article
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