GO Annotation Flat File (OBO)

Column	Content	Required?	Example
1	DB	required	SGD
2	DB_Object_ID	required	S000000296
3	DB_Object_Symbol	required	PHO3
4	Qualifier	optional	NOT
5	REF_ID	required	GO:0003993
6	DB:Reference (|DB:Reference)	required	PMID:2676709
7	Evidence code	required	IMP
8	With (or) From	optional	GO:0000346
9	Aspect	required	F
10	DB_Object_Name	optional	acid phosphatase
11	DB_Object_Synonym (|Synonym)	optional	YBR092C
12	DB_Object_Type	required	gene
13	taxon(|taxon)	required	taxon:4932
14	Date	required	20010118
15	Assigned_by	required	SGD