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1·It was a secretory protein, contained 2 transmembrane domain.

为分泌蛋白，含有2个跨膜结构。

2·It is the extracellular domain that binds neurotransmitters. The transmembrane domain forms an ion channel.

胞外域结合神经递质。跨膜域形成离子通道。

3·By some truncations and deletions of ERIS being constructed, it is confirmed that the transmembrane domain was required for oligomer formation.

本文通过制备一系列ERIS的缺失体或截短体，证实了其中跨膜结构域是寡聚体形成所必需的。

4·Bioinformatic methods were employed to analyze the homology of the nucleotide and amino acids sequence of beta subunit gene and its possible protein domain and transmembrane topology.

并应用生物信息学方法分析该基因的同源性、蛋白结构域及跨膜拓扑结构。