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1.
Acta bioquím. clín. latinoam ; 34(3): 293-330, sept. 2000. ilus
Article in Spanish | LILACS | ID: lil-288917

ABSTRACT

Las galectinas se definen por dos propiedades: secuencias de aminoácidos características compartidas y afinidad por azúcares ß-galactosídicos. Numerosas galactinas de mamíferos fueron secuenciadas y bien caracterizadas en diferentes especies, siendo clasificadas como galectina-1 a galectina-10, según sus homologías de secuencia. La identidad entre dominios que ligan carbohidratos de distintas galectinas de una especie de mamífero oscila entre 20-40 por ciento, mientras que la identidad de galectina-1, por ejemplo, entre distintas especies es de 80-90 por ciento. En la presente revisión, se describen las principales propiedades distintivas de las galectinas de mamífero en cuanto a estructura proteica, estructura cristalina, especificidad glicídica y ligandos específicos


Subject(s)
Humans , Mice , Rats , Animals , Cattle , In Vitro Techniques , Lectins/chemistry , Biomarkers/blood , Selectins/chemistry , Amino Acid Sequence , Carbohydrate Sequence , Cattle , Chickens , Crystallography , Laminin/chemistry , Laminin/ultrastructure , Lectins/classification , Lectins/physiology , Mammals , Molecular Sequence Data , X-Ray Diffraction
2.
Biol. Res ; 30(3): 99-104, 1997. ilus, tab
Article in English | LILACS | ID: lil-255651

ABSTRACT

Galectins (S-type or S-Lac lectins) are a well-defined family of beta-galactoside animal lectins characterized by a high sequence homology in the carbohydrate-binding domain. We have previously purified and characterized the S-type lectin from the ovary of the toad Bufo arenarum. In this study, we purified the S-type lectins from Bufo arenarum ovary and human spleen by an improved method which included ion exchange and affinity chromatography. Antibody cross-reactivities between both lectins and some other S-type lectins showed that they share epitopes. Glycosylation studies carried out with detection/differentiation kits suggested that both lectins are not glycosylated


Subject(s)
Humans , Animals , Female , Lectins/immunology , Lectins/metabolism , Antibodies/metabolism , Spleen/immunology , Spleen/metabolism , Bufo arenarum , Cross Reactions , Epitopes , Glycosylation , Lectins/isolation & purification , Ovary/immunology , Ovary/metabolism
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