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Type: Artigo de periódico
Title: Isolation And Characterization Of A Lectin From Annona Muricata Seeds.
Author: Damico, D C S
Freire, M G M
Gomes, V M
Toyama, M H
Marangoni, S
Novello, J C
Macedo, M L R
Abstract: A lectin with a high affinity for glucose/mannose was isolated from Annona muricata seeds (Annonaceae) by gel filtration chromatography on Sephacryl S-200, ion exchange chromatography on a DEAE SP-5 PW column, and molecular exclusion on a Protein Pak Glass 300 SW column. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (PAGE) yielded two protein bands of approximately 14 kDa and 22 kDa. However, only one band was seen in native PAGE. The Mr of the lectin estimated by fast-performance liquid chromatography-gel filtration on Superdex 75 was 22 kDa. The lectin was a glycoprotein with 8% carbohydrate (neutral sugar) and required divalent metal cations (Ca2+, Mg2+, and Mn2+) for full activity. Amino acid analysis revealed a large content of Glx, Gly, Phe, and Lys. The lectin agglutinated dog, chicken, horse, goose, and human erythrocytes and inhibited the growth of the fungi Fusarium oxysporum, Fusarium solani, and Colletotrichum musae.
Subject: Amino Acid Sequence
Amino Acids
Cations, Divalent
Chromatography, Gel
Chromatography, Ion Exchange
Electrophoresis, Polyacrylamide Gel
Hemagglutination Tests
Hydrogen-ion Concentration
Molecular Sequence Data
Molecular Weight
Plant Lectins
Citation: Journal Of Protein Chemistry. v. 22, n. 7-8, p. 655-61, 2003-Nov.
Rights: fechado
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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