title: Purification, identification and preliminary crystallographic studies of Pru du amandin, an allergenic protein from Prunus dulcis.
abstract: Food allergies appear to be one of the foremost causes of hypersensitivity reactions. Nut allergies account for most food allergies and are often permanent. The 360 kDa hexameric protein Pru du amandin, a known allergen, was purified from almonds (Prunus dulcis) by ammonium sulfate fractionation and ion-exchange chromatography. The protein was identified by a BLAST homology search against the nonredundant sequence database. Pru du amandin belongs to the 11S legumin family of seed storage proteins characterized by the presence of a cupin motif. Crystals were obtained by the hanging-drop vapour-diffusion method. The crystals belong to space group P4(1) (or P4(3)), with unit-cell parameters a = b = 150.7, c = 164.9 A.
authors: National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110 067, India.
authors: Vineet
authors: V
authors: Gaur
authors: Dhruv K
authors: DK
authors: Sethi
authors: Dinakar M
authors: DM
authors: Salunke
mesh_terms: D000485:Allergens / Q000737:chemistry* / Q000302:isolation & purification; D000595:Amino Acid Sequence; D052179:Antigens, Plant / Q000737:chemistry* / Q000302:isolation & purification; D018360:Crystallography, X-Ray; D005512:Food Hypersensitivity; D006801:Humans; D008969:Molecular Sequence Data; D010446:Peptide Fragments / Q000737:chemistry; D010455:Peptides / Q000737:chemistry* / Q000302:isolation & purification; D010940:Plant Proteins / Q000737:chemistry / Q000302:isolation & purification; D027861:Prunus / Q000737:chemistry*
chemical_list: D000485:Allergens; D052179:Antigens, Plant; D010446:Peptide Fragments; D010455:Peptides; D010940:Plant Proteins; C527648:Pru du amandin allergen, Prunus dulcis; C463779:amandin