The fasta object is a sequence model object with a specific title to identify the sequence and a sequence data property to represents the specific molecule.
The attribute header of this FASTA file. The fasta header usually have some format which can be parsed by some
specific loader and gets some well organized information about the sequence. The format of the header is
usually different between each biological database.(这个FASTA文件的属性头，标题的格式通常在不同的数据库之间是具有很大差异的)
The title value which contains some brief information about this sequence.(这条序列数据的标题摘要信息)