Structure of PDB 7qsk Chain F

Receptor sequence

>7qskF (length=432) Species: 9913 (Bos taurus)

PKKTSFGSLKDEDRIFTNLYGRHDWRLKGAQSRGDWYKTKEILLKGPDWI
LGEVKTSGLRGRGGAGFPTGLKWSFMNKPSDGRPKYLVVNADEGEPGTCK
DREIIRHDPHKLVEGCLVGGRAMGARAAYIYIRGEFYNEASNLQVAIREA
YEAGLIGKNACGSGYDFDVFVVRGAGAYICGEETALIESIEGKQGKPRLK
PPFPADVGVFGCPTTVANVETVAVSPTICRRGGAWFASFGRERNSGTKLF
NISGHVNNPCTVEEEMSVPLKELIEKHAGGVTGGWDNLLAVIPGGSSTPL
IPKSVCETVLMDFDALIQAQTGLGTAAVIVMDRSTDIVKAIARLIEFYKH
ESCGQCTPCREGVDWMNKVMARFVRGDARPAEIDSLWEISKQIEGHTICA
LGDGAAWPVQGLIRHFRPELEERMQQFAQQHQ

3D structure

• PDB: 7qsk Cryo-EM structures define ubiquinone-10 binding to mitochondrial complex I and conformational transitions accompanying Q-site occupancy.
• Chain: F
• Resolution: 2.84 Å

Enzymatic activity

• Enzyme Commision number: 7.1.1.2: NADH:ubiquinone reductase (H(+)-translocating).

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	FMN	F	G67 G69 K78 N96 E99 Y184 G187 E188 A223 N224 T227	G61 G63 K72 N90 E93 Y178 G181 E182 A217 N218 T221
BS02	SF4	F	S358 C359 G360 Q361 C362 C365 T403 C405 L407	S352 C353 G354 Q355 C356 C359 T397 C399 L401

Gene Ontology

Molecular Function

• GO:0008137 NADH dehydrogenase (ubiquinone) activity
• GO:0010181 FMN binding
• GO:0016491 oxidoreductase activity
• GO:0046872 metal ion binding
• GO:0051287 NAD binding
• GO:0051539 4 iron, 4 sulfur cluster binding

Biological Process

• GO:0006120 mitochondrial electron transport, NADH to ubiquinone
• GO:1902600 proton transmembrane transport

Cellular Component

• GO:0005739 mitochondrion
• GO:0005743 mitochondrial inner membrane
• GO:0045271 respiratory chain complex I

External links

• PDB: RCSB:7qsk, PDBe:7qsk, PDBj:7qsk
• PDBsum: 7qsk
• PubMed: 35589726
• UniProt: P25708|NDUV1_BOVIN NADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial (Gene Name=NDUFV1)