Structure of PDB 6zjy Chain 3

Receptor sequence

>6zjy3 (length=754) Species: 274 (Thermus thermophilus)

MVRVKVNDRIVEVPPGTSVMDAVFHAGYDVPLFCSEKHLSPIGACRMCLV
RIGLIQWQPKLAASCVTAVADGMVVDTLSDVVREAQAGMVEFTLLNHPLD
CPTCDKGGACELQDRTVEYGLYEKPLELPVYTRFEFTRRHVDKHHPLSPF
VILDRERCIHCKRCVRYFEEVPGDEVLDFIERGVHTFIGTMDFGLPSGFS
GNITDICPVGALLDLTARFRARNWEMEETPTTCALCPVGCGITADTRSGE
LLRIRAREVPEVNEIWICDAGRFGHEWADQNRLKTPLVRKEGRLVEATWE
EAFLALKEGLKEARGEEVGLYLAHDATLEEGLLASELAKALKTPHLDFQG
RTAAPASLFPPASLEDLLQADFALVLGDPTEEAPILHLRLSEFVRDLKPP
HRYNHGTPFADLQIKERMPRRTDKMALFAPYRAPLMKWAAIHEVHRPGEE
REILLALLGDKEGSEMVAKAKEAWEKAKNPVLILGAGVLQDTVAAERARL
LAERKGAKVLAMTPAANARGLEAMGVLPGAKGASWDEPGALYAYYGFVPP
EEALKGKRFVVMHLSHLHPLAERYAHVVLPAPTFYEKRGHLVNLEGRVLP
LSPAPIENGEAEGALQVLALLAEALGVRPPFRLHLEAQKALKARKVPEAM
GRLSFRLKELRPKERKGAFYLRPTMWKAHQAVGKAQEAARAELWAHPETA
RAEALPEGAQVAVETPFGRVEARVVHREDVPKGHLYLSALGPAAGLRVEG
RVLV

3D structure

• PDB: 6zjy Key role of quinone in the mechanism of respiratory complex I.
• Chain: 3
• Resolution: 5.5 Å

Enzymatic activity

• Catalytic site (original residue number in PDB): A293 A376 A377 A509 P537 A538
• Catalytic site (residue number reindexed from 1): A270 A353 A354 A486 P514 A515
• Enzyme Commision number: 7.1.1.-

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	SF4	3	D118 C119 C122 K124 G125 C128 V232	D100 C101 C104 K106 G107 C110 V209
BS02	SF4	3	C181 I182 H183 C184 K185 R186 C187 C230	C158 I159 H160 C161 K162 R163 C164 C207
BS03	SF4	3	C256 L258 C259 V261 G262 C263 C291	C233 L235 C236 V238 G239 C240 C268
BS04	FES	3	C34 S35 I42 G43 C45 R46	C34 S35 I42 G43 C45 R46

Gene Ontology

Molecular Function

• GO:0003954 NADH dehydrogenase activity
• GO:0008137 NADH dehydrogenase (ubiquinone) activity
• GO:0016491 oxidoreductase activity
• GO:0016651 oxidoreductase activity, acting on NAD(P)H
• GO:0043546 molybdopterin cofactor binding
• GO:0046872 metal ion binding
• GO:0048038 quinone binding
• GO:0051536 iron-sulfur cluster binding
• GO:0051537 2 iron, 2 sulfur cluster binding
• GO:0051539 4 iron, 4 sulfur cluster binding

Biological Process

• GO:0042773 ATP synthesis coupled electron transport
• GO:0045333 cellular respiration
• GO:1902600 proton transmembrane transport

Cellular Component

• GO:0005886 plasma membrane
• GO:0016020 membrane

External links

• PDB: RCSB:6zjy, PDBe:6zjy, PDBj:6zjy
• PDBsum: 6zjy
• PubMed: 32811817
• UniProt: Q56223|NQO3_THET8 NADH-quinone oxidoreductase subunit 3 (Gene Name=nqo3)