2004
DOI: 10.1074/jbc.m408686200
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Cloning and Characterization of the Acid Lipase from Castor Beans

Abstract: Castor bean endosperm contains a well known acid lipase activity that is associated with the oil body membrane. In order to identify this enzyme, proteomic analysis was performed on purified oil bodies. A ϳ60-kDa protein was identified (RcOBL1), which shares homology with a lipase from the filamentous fungus Rhizomucor miehei. RcOBL1 contains features that are characteristic of an ␣/␤-hydrolase, such as a putative catalytic triad (SDH) and a conserved pentapeptide (GXSXG) surrounding the nucleophilic serine re… Show more

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Cited by 124 publications
(102 citation statements)
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“…This acid lipase exhibited specificity for short and Brazilian Journal of Chemical Engineering medium chain fatty acids and also for non-saturated ones. In addition, it showed some regioselectivity for fatty acids at the positions sn-1 and sn-2 (Eastmond, 2004).…”
Section: Bean Lipasesmentioning
confidence: 99%
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“…This acid lipase exhibited specificity for short and Brazilian Journal of Chemical Engineering medium chain fatty acids and also for non-saturated ones. In addition, it showed some regioselectivity for fatty acids at the positions sn-1 and sn-2 (Eastmond, 2004).…”
Section: Bean Lipasesmentioning
confidence: 99%
“…In seeds in which the lipase is found in sub-cellular compartments, the enzyme may be free or associated with organelles. In seeds in which the lipase is in sub-cellular compartments that are not lipid bodies, the enzymes will have contact with the lipid body membranes during catalysis (Eastmond, 2004).…”
Section: Seed Lipasesmentioning
confidence: 99%
“…14-19 Os materiais de reserva presentes nas sementes como amido, proteínas e/ou lipídeos são hidrolisados por ação de hidrolases produzidas durante o processo de germinação tais como proteases, amilases e lipases para fornecer energia e componentes para o crescimento embrionário nos primeiros estágios de desenvolvimento. 16,17,24 Óleos e gorduras são convertidos em ácidos graxos livres que posteriormente são convertidos em açúcares por reações de β-oxidação. 24,25 Entretanto, a atividade lipásica também pode ser detectada em sementes dormentes de algumas oleaginosas como mamona e pinhão-manso.…”
Section: Introductionunclassified
“…16,17,24 Óleos e gorduras são convertidos em ácidos graxos livres que posteriormente são convertidos em açúcares por reações de β-oxidação. 24,25 Entretanto, a atividade lipásica também pode ser detectada em sementes dormentes de algumas oleaginosas como mamona e pinhão-manso. [21][22][23][24] A aplicação de extratos brutos obtidos de sementes dormentes com elevada atividade lipásica é bastante atrativa, pois não são requeridas etapas de germinação e, consequentemente, reduz os custos de obtenção destes biocatalisadores.…”
Section: Introductionunclassified
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