CATH Domain 6g2jD01

CATH Classification

Level	CATH Code	Description
	1	Mainly Alpha
	1.10	Orthogonal Bundle
	1.10.645	Cytochrome-c3 Hydrogenase; chain B
	1.10.645.10	Cytochrome-c3 Hydrogenase, chain B

Domain Context

CATH Clusters

Superfamily	Cytochrome-c3 Hydrogenase, chain B
Functional Family	NADH-quinone oxidoreductase subunit D

Enzyme Information

1.6.99.3

NADH dehydrogenase.

based on mapping to UniProt Q91WD5

NADH + acceptor = NAD(+) + reduced acceptor.

-!- After preparations have been subjected to certain treatments cytochrome c may act as acceptor. -!- Under normal conditions, two protons are extruded from the cytoplasm or the intramitochondrial or stromal compartment. -!- Present in a mitochondrial complex as EC 7.1.1.2. -!- Formerly EC 1.6.2.1.

7.1.1.2

NADH:ubiquinone reductase (H(+)-translocating).

based on mapping to UniProt Q91WD5

NADH + ubiquinone + 5 H(+)(In) = NAD(+) + ubiquinol + 4 H(+)(Out).

-!- The complex is present in mitochondria and aerobic bacteria. -!- Breakdown of the complex can release EC 1.6.99.3. -!- In photosynthetic bacteria, reversed electron transport through this enzyme can reduce NAD(+) to NADH. -!- Formerly EC 1.6.5.3.

UniProtKB Entries (1)

P03899

NU3M_MOUSE

Mus musculus

NADH-ubiquinone oxidoreductase chain 3

PDB Structure

PDB	6G2J
External Links	PDBSum Proteopedia
Method	ELECTRON MICROSCOPY
Organism
Primary Citation	Cryo-EM structures of complex I from mouse heart mitochondria in two biochemically defined states. Agip, A.A., Blaza, J.N., Bridges, H.R., Viscomi, C., Rawson, S., Muench, S.P., Hirst, J. Nat. Struct. Mol. Biol.