Structure of PDB 3ir5 Chain C

Receptor sequence
>3ir5C (length=220) Species: 83333 (Escherichia coli K-12) [Search protein sequence]
MQFLNMFFFDIYPYIAGAVFLIGSWLRYDYGQYTWRAASSQMLDRKGMNL
ASNLFHIGILGIFVGHFFGMLTEAWLPIEVKQKMAMFAGGASGVLCLIGG
VLLLKRRLFSPRVRATTTGADILILSLLVIQCALGLLTIPFSAQHMDGSE
MMKLVGWAQSVVTFHGGASQHLDGVAFIFRLHLVLGMTLFLLFPFSRLIH
IWSVPVEYLTRKYQLVRARH
3D structure
PDB3ir5 Protein crystallography reveals a role for the FS0 cluster of Escherichia coli nitrate reductase A (NarGHI) in enzyme maturation.
ChainC
Resolution2.3 Å
3D
structure
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Enzymatic activity
Enzyme Commision number 1.7.5.1: nitrate reductase (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 HEM C S39 S40 Q41 M48 F55 H56 R112 R202 H205 I206 S39 S40 Q41 M48 F55 H56 R107 R197 H200 I201
BS02 HEM C I62 H66 M70 A90 G94 Q136 C137 G140 L141 M156 L159 H187 L188 G191 F195 I62 H66 M70 A85 G89 Q131 C132 G135 L136 M151 L154 H182 L183 G186 F190
Gene Ontology
Molecular Function
GO:0008940 nitrate reductase activity
GO:0009055 electron transfer activity
GO:0016491 oxidoreductase activity
GO:0020037 heme binding
GO:0046872 metal ion binding
GO:0160182 nitrate reductase (quinone) activity
Biological Process
GO:0009061 anaerobic respiration
GO:0019645 anaerobic electron transport chain
GO:0042126 nitrate metabolic process
GO:0042128 nitrate assimilation
Cellular Component
GO:0005886 plasma membrane
GO:0009325 nitrate reductase complex
GO:0016020 membrane
GO:0044799 NarGHI complex

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Cellular Component
External links
PDB RCSB:3ir5, PDBe:3ir5, PDBj:3ir5
PDBsum3ir5
PubMed20053990
UniProtP11350|NARI_ECOLI Respiratory nitrate reductase 1 gamma chain (Gene Name=narI)

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