Structure of PDB 1kcb Chain A

Receptor sequence
>1kcbA (length=333) Species: 223 (Achromobacter cycloclastes) [Search protein sequence]
DISTLPRVKVDLVKPPFVHAHDQVAKTGPRVVEFTMTIEEKKLVIDREGT
EIHAMTFNGSVPGPLMVVHENDYVELRLINPDTNTLLHNIDFHAATGALG
GGALTQVNPGEETTLRFKATKPGVFVYHCAPEGMVPWHVTSGMNGAIMVL
PRDGLKDEKGQPLTYDKIYYVGEQDFYVPKDEAGNYKKYETPGEAYEDAV
KAMRTLTPTHIVFNGAVGALTGDHALTAAVGERVLVVHSQANRDTRPHLE
GGHGDYVWATGKFRNPPDLDQETWLIPGGTAGAAFYTFRQPGVYAYVNHN
LIEAFELGAAGHFKVTGEWNDDLMTSVVKPASM
3D structure
PDB1kcb Crystal structure of a NO-forming nitrite reductase mutant: an analog of a transition state in enzymatic reaction
ChainA
Resolution1.65 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) H88 D91 H93 H128 C129 H138 M143 H248 E272 T273 H299
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 CU A H95 C136 H145 M150 H88 C129 H138 M143
BS02 CU A H100 H135 H93 H128
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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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1kcb, PDBe:1kcb, PDBj:1kcb
PDBsum1kcb
PubMed12615072
UniProtP25006|NIR_ACHCY Copper-containing nitrite reductase (Gene Name=nirK)

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