The first 15 amino acid residues of the major subunit (subA) were determined and the sequence was Ala-Glu-Ala-Gly-Gly-Pro-Gly-Gly-Asn-Gln-Lys-Ile-Gly-Lys-Tyr.

• 测定了纯化的队C SubA亚基N一末端的氨基酸序列，其结果为:川a-Glu一Ala-Gly一Gly一pro一Gly一Gly一Asn一Gln一Lys一Ile曰Gly一Lys一介r。