Comment 注意ＲＢＳ指核糖体结合位点
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Feature Key RBS
Definition 核糖体结合位点
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
References [1] Shine, J. and Dalgarno, L. Proc Natl Acad Sci USA
71, 1342-1346 (1974)
[2] Gold, L. et al. Ann Rev Microb 35, 365-403 (1981)
Comment 在原核生物中为ＳＤ序列，定位在起始编码位点上游５－９个碱基处，一致序列＝ＧＧＡＧＧＴ［１，２］
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Feature Key repeat_region
Definition 基因组中含有重复单位的区域
Optional qualifiers /citation=[number]
/db_xref="<database>:<identifier>"
/evidence=<evidence_value>
/function="text"
/gene="text"
/label=feature_label
/map="text"
/note="text"
/partial
/rpt_family="text"
/rpt_type=<repeat_type>
/rpt_unit=<feature_label> or <base_range>
/standard_name="text"
/usedin=accnum:feature_label
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Feature Key repeat_unit
Definition 单个重复单位
Optional qualifiers /citation=[number]
/db_xref="<database>:<identifier>"
/evidence=<evidence_value>
/function="text"
/gene="text"
/label=feature_label
/map="text"
/note="text"
/partial
/rpt_family="text"
/rpt_type=<repeat_type>
/rpt_unit=<feature_label> or <base_range>
/usedin=accnum:feature_label
Comment 更好的利用是在repeat_region中注明/rpt_family和/rpt_type qualifiers,而不是在repeat_unitz中
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Feature Key rep_origin
Definition 复制原点；核酸复制的起点
Optional qualifiers /citation=[number]
/db_xref="<database>:<identifier>"
/direction=value
/evidence=<evidence_value>
/gene="text"
/label=feature_label
/map="text"
/note="text"
/partial
/standard_name="text"
/usedin=accnum:feature_label
Comment 方向是有效值：向右，向左，或双向