只要抗原肽链上关键位置的氨基酸特定地与该HLA分子上的穴区相对应，一个HLA分子则可与多种抗原肽相结合。

Multiple antigen peptides can bind to a single HLA molecule via the interaction between the specific amino acids and the pocket.

youdao

There's a region up here called the antigen binding region and those-- and there's two copies of that region and it's responsible for antigen binding.

在图片上部有个区域,被称作抗原结合区,而这些,而这里有两个抗原结合区,主要负责与抗原结合

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