Structure of PDB 4qog Chain B

Receptor sequence
>4qogB (length=228) Species: 9606 (Homo sapiens) [Search protein sequence]
GKKVLIVYAHQEPKSFNGSLKNVAVDELSRQGCTVTVSDLYAMNFEPRAT
DKDITGTLSNPEVFNYGVETHEAYKQRSLASDITDEQKKVREADLVIFQF
PLYWFSVPAILKGWMDRVLCQGFAFDIPGFYDSGLLQGKLALLSVTTGGT
AEMYTKTGVNGDSRYFLWPLQHGTLHFCGFKVLAPQISFAPEIASEEERK
GMVAAWSQRLQTIWKEEPIPCTAHWHFG
3D structure
PDB4qog Crystal structure of fad quinone reductase 2 in complex with melatonin at 1.4A
ChainB
Resolution1.4 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) G149 Y155 N161
Catalytic site (residue number reindexed from 1) G148 Y154 N160
Enzyme Commision number 1.10.5.1: ribosyldihydronicotinamide dehydrogenase (quinone).
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 ML1 B W105 G149 W104 G148 BindingDB: IC50=11300nM,Ki=57nM
BS02 FAD B H11 S16 F17 N18 S20 P102 L103 Y104 W105 F106 T147 T148 G149 G150 Y155 E193 R200 K201 H10 S15 F16 N17 S19 P101 L102 Y103 W104 F105 T146 T147 G148 G149 Y154 E192 R199 K200
BS03 ML1 B G68 F126 I128 F178 G67 F125 I127 F177 BindingDB: IC50=11300nM,Ki=57nM
BS04 ZN B H173 H177 C222 H172 H176 C221
Gene Ontology
Molecular Function
GO:0001512 dihydronicotinamide riboside quinone reductase activity
GO:0003955 NAD(P)H dehydrogenase (quinone) activity
GO:0005515 protein binding
GO:0008270 zinc ion binding
GO:0009055 electron transfer activity
GO:0016491 oxidoreductase activity
GO:0016661 oxidoreductase activity, acting on other nitrogenous compounds as donors
GO:0031404 chloride ion binding
GO:0042803 protein homodimerization activity
GO:0046872 metal ion binding
GO:0071949 FAD binding
GO:1904408 melatonin binding
GO:1905594 resveratrol binding
Biological Process
GO:1901662 quinone catabolic process
Cellular Component
GO:0005654 nucleoplasm
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0070062 extracellular exosome

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Cellular Component
External links
PDB RCSB:4qog, PDBe:4qog, PDBj:4qog
PDBsum4qog
PubMed
UniProtP16083|NQO2_HUMAN Ribosyldihydronicotinamide dehydrogenase [quinone] (Gene Name=NQO2)

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