This is a 2S seed storage protein. The protein consists of two chains linked by disulfide bonds. There seems to be at least 8 variants: 1.0101 (PubMed:3181153), 1.0102/SA2S1 (PubMed:8093997), 1.0103/SA2S2 (PubMed:8093997), 1.0104/SIN1 (PubMed:8647131), 1.0105/SIN2 (PubMed:8647131), 1.0106/SIN3 (PubMed:8647131), 1.0107/SIN4 (PubMed:8647131), and 1.0108/SIN5 (PubMed:8647131). Causes an allergic reaction in human. Causes cabbage allergy. Belongs to the 2S seed storage albumins family.