FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

respiratory chain complex I

ID (Ontology)

GO:0045271 (Gene Ontology)

Definition

Respiratory chain complex I is an enzyme of the respiratory chain. It consists of several polypeptide chains and is L-shaped, with a horizontal arm lying in the membrane and a vertical arm that projects into the matrix. The electrons of NADH enter the chain at this complex.[ ISBN:0716749556 ]

Also Known As

"NADH dehydrogenase (ubiquinone) complex" ; "NADH dehydrogenase complex (ubiquinone)" ; "NADH-Q oxidoreductase complex"

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Genes (FBgn)	GO_BIOLOGICAL_PROCESS
Genes (FBgn)	GO_CELLULAR_COMPONENT

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Gene Groups	Genes
respiratory chain complex I (all annotations which use CV term, excluding "NOT" statements)
part_of \| respiratory chain complex I	--

Spanning Tree (Parents/Children)

protein-containing complex
 |__respiratory chain complex__________
membrane protein complex               |
 |__NADH dehydrogenase complex_________|
 |__transmembrane transporter complex__|
oxidoreductase complex                 |
 |__NADH dehydrogenase complex_________|
transporter complex                    |
 |__transmembrane transporter complex__|
                                       respiratory chain complex I  59 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	NADH dehydrogenase complex respiratory chain complex transmembrane transporter complex
Part of
Synonyms & Secondary IDs
Synonyms
	"electron transport complex I" RELATED "NADH dehydrogenase (ubiquinone) complex" EXACT "NADH dehydrogenase complex (ubiquinone)" EXACT "NADH-Q oxidoreductase complex" EXACT
Secondary IDs

External Crossreferences & Linkouts