Faret M, de Morais SB, Zanchin NIT, de Souza TDACB. L-Asparaginase from Erwinia carotovora: insights about its stability and activity.
Mol Biol Rep 2018;
46:1313-1316. [PMID:
30446961 DOI:
10.1007/s11033-018-4459-2]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 10/30/2018] [Indexed: 11/26/2022]
Abstract
Enzymatic prospection indicated that L-asparaginase from Erwinia carotovora (ECAR-LANS) posses low glutaminase activity and much effort has been made to produce therapeutic ECAR-LANS. However, its low stability precludes its use in therapy. Herein, biochemical and biophysical assays provided data highlighting the influence of solubilization and storage into ECAR-LANS structure, stability, and activity. Moreover, innovations in recombinant expression and purification guaranteed the purification of functional tetramers. According to solubilization condition, the L-asparaginase activity and temperature of melting ranged up to 25-32%, respectively. CD spectra indicate the tendency of ECAR-LANS to instability and the influence of β-structures in activity. These results provide relevant information to guide formulations with prolonged action in the bloodstream.
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