人红细胞膜带3蛋白由911个氨基酸组成,可分为N端胞质域和C端跨膜域。最新研究结果表明,α螺旋含量较高的跨膜域往返跨膜12次。在细胞膜中,带3蛋白主要以二聚体和四聚体(二聚体的二聚体)形式存在;尽管其中的单体可独立地转运阴离子,然而二聚体中的两个单体之间存在着相互作用。 Human erythrocyte membrane protein 3 consists of 911 amino acids, can be divided into N-terminal cytoplasmic domain and C-terminal transmembrane domain. The latest research results show that transmembrane transmembrane transmembrane with higher α-helix transcripts 12 times. In the cell membrane, the band 3 protein exists predominantly as dimers and tetramers (dimers of dimers); although the monomers therein can independently transport the anion, however, the two monomers in the dimer There is interaction between.