Fatty-acid-binding protein. Interacts preferentially with saturated fatty acid. May be involved in alpha-linolenic (C18:3) metabolism. Expressed in developing cotyledons, young seedlings, roots, seeds, embryos, macrospores, preanthesis and tapetum. Restricted to developing and reproductive tissues. No visible phenotype during vegetative growth, but shorter siliques containing a reduced number of viable seeds. Elevated total fatty-acid levels in leaves and seeds of plants grown at 15 and 22 degrees Celsius. Belongs to the chalcone isomerase family.