序列名query_name: query sequence name
eggNOG编号seed_eggNOG_ortholog: best protein match in eggNOG
seed_ortholog_evalue: best protein match (e-value)
seed_ortholog_score: best protein match (bit-score)
预测基因名predicted_gene_name: Predicted gene name for query sequences
逗号分隔的GO注释GO_terms: Comma delimited list of predicted Gene Ontology terms
KO编号注释KEGG_KO: Comma delimited list of predicted KEGG KOs
代谢反应BiGG_Reactions: Comma delimited list of predicted BiGG metabolic reactions
注释物种范围Annotation_tax_scope: The taxonomic scope used to annotate this query sequence
OG编号Matching_OGs: Comma delimited list of matching eggNOG Orthologous Groups
best_OG|evalue|score: Best matching Orthologous Groups (only in HMM mode)
COG分类COG functional categories: COG functional category inferred from best matching OG
模型注释eggNOG_HMM_model_annotation: eggNOG functional description inferred from best matching OG

Matching_OGs 是什么意思？
https://github.com/eggnogdb/eggnog-mapper/issues/129
例如 05CPZ 就是eggNOG的
http://eggnogdb.embl.de/#/app/results?target_nogs=05CPZ