Comment               多个qualifiers(例如/clone=)可参照附录表IV有关/organelle的范围

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Feature Key           stem_loop

Definition            发夹结构；一段双螺旋区域，由于在RNADNA或的单链上临近的互补序列间形成碱基配对

Optional qualifiers   /citation=[number]
                      /db_xref="<database>:<identifier>"                     
                      /evidence=<evidence_value>
                      /function="text"
                      /gene="text"
                      /label=feature_label
                      /map="text"
                      /note="text"
                      /partial
                      /standard_name="text"
                      /usedin=accnum:feature_label

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Feature Key           STS

Definition           序列标签位点。短的，单一拷贝的DNA序列，可作为基因图上的标记，可通过PCR方法检测。通过一系列的STSs的顺序对基因组区域作图

Optional qualifiers   /citation=[number]
                      /db_xref="<database>:<identifier
                      /evidence=<evidence_value>                     
                      /standard_name="text"
                      /gene="text"
                      /label=feature_label     
                      /usedin=accnum:feature_label
                      /note="text"
                      /partial
                      /map="text"

Molecule scope        DNA

Parent key            misc_binding

Comment               STS位置包括在primer_bind或primers中的引物 l

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Feature Key           TATA_signal

Definition           TATA框；Goldberg-Hogness框；一个保守的富含AT，大约在真核生物RNA聚合酶II转录子起始位点前25bp，保守序列=TATA（A/T）A（A/T）[1，2]

Optional qualifiers   /citation=[number]
                      /db_xref="<database>:<identifier>"                     
                      /evidence=<evidence_value>
                      /gene="text"
                      /label=feature_label
                      /map="text"
                      /note="text"
                      /partial
                      /usedin=accnum:feature_label

Organism scope        Eukaryotes and eukaryotic viruses

Molecule scope        DNA

References            [1] Efstratiadis, A.  et al.  Cell 21, 653-668 (1980)
                                [2] Corden, J., et al.  "Promoter sequences of eukaryotic protein-encoding genes"  Science 209, 1406-1414 (1980)

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Feature Key           terminator

Definition            终止子；定位在转录子两端的DNA序列，引起RNA聚合酶转录的终止

Optional qualifiers   /citation=[number]
                      /db_xref="<database>:<identifier>"                     
                      /evidence=<evidence_value>
                      /gene="text"
                      /label=feature_label
                      /map="text"
                      /note="text"
                      /partial
                      /standard_name="text"
                      /usedin=accnum:feature_label

Molecule scope        DNA

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Feature Key           transit_peptide

Definition            编码转运多肽的序列；一个核编码的细胞器蛋白的N端的编码序列；

t
Optional qualifiers   /citation=[number]
                      /db_xref="<database>:<identifier>"                     
                      /evidence=<evidence_value>
                      /function="text"
                      /gene="text"
                      /label=feature_label
                      /map="text"
                      /note="text"
                      /partial
                      /product="text"
                      /pseudo
                      /standard_name="text"
                      /usedin=accnum:feature_label