AHB2 (Arabidopsis hemoglobin2) belongs to plant globin family and is a heme, iron and oxygen binding protein. Expressed in rosette leaves and young roots and induced by variety of environmental stresses. Synonymes:AHB2, ARABIDOPSIS HEMOGLOBIN 2, ARATH GLB2, ATGLB2, GLB2, HAEMOGLOBIN 2, HB2, HEMOGLOBIN 2, NON-SYMBIOTIC HAEMOGLOBIN 2, NSHB2.