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BioLiP

Structure of PDB 2ppa Chain C

Receptor sequence
>2ppaC (length=336) Species: 511 (Alcaligenes faecalis) [Search protein sequence]
ATAAEIAALPRQKVELVDPPFVHAHSQVAEGGPKVVEFTMVIEEKKIVID
DAGTEVHAMAFNGTVPGPLMVVHQDDYLELTLINPETNTLMHNIDFHAAT
GALGGGGLTEINPGEKTILRFKATKPGVFVYHCAPPGMVPWHVVSGMNGA
IMVLPREGLHDGKGKALTYDKIYYVGEQDFYVPRDENGKYKKYEAPGDAY
EDTVKVMRTLTPTHVVFNGAVGALTGDKAMTAAVGEKVLIVHSQANRDTR
PHLIGGHGDYVWATGKFNTPPDVDQETWFIPGGAAGAAFYTFQQPGIYAY
VNHNLIEAFELGAAAHFKVTGEWNDDLMTSVLAPSG
3D structure
PDB2ppa Conserved active site residues limit inhibition of a copper-containing nitrite reductase by small molecules.
ChainC
Resolution1.69 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H95 D98 H100 H135 C136 H145 M150 H255 E279 T280 H306
Catalytic site (residue number reindexed from 1) H92 D95 H97 H132 C133 H142 M147 H252 E276 T277 H303
Enzyme Commision number 1.7.2.1: nitrite reductase (NO-forming).
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 N2O C I257 H306 I254 H303
BS02 CU1 C H95 C136 H145 M150 H92 C133 H142 M147
BS03 CU C H100 H135 H97 H132
BS04 ACT C H100 H135 H97 H132
BS05 ACT C M141 P143 W144 M138 P140 W141
BS06 ACT C G229 I300 H319 K321 G226 I297 H316 K318
Gene Ontology
Molecular Function
GO:0005507 copper ion binding
GO:0016491 oxidoreductase activity
GO:0046872 metal ion binding
GO:0050421 nitrite reductase (NO-forming) activity
Biological Process
GO:0019333 denitrification pathway
GO:0042128 nitrate assimilation
Cellular Component
GO:0042597 periplasmic space

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Cellular Component
External links
PDB RCSB:2ppa, PDBe:2ppa, PDBj:2ppa
PDBsum2ppa
PubMed18358002
UniProtP38501|NIR_ALCFA Copper-containing nitrite reductase (Gene Name=nirK)

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