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THE STRUCTURE OF CU-NITRITE REDUCTASE FROM ACHROMOBACTER CYCLOCLASTES AT FIVE PH VALUES, WITH NITRITE BOUND AND WITH TYPE II CU DEPLETED External Resource: Annotation Chains Domain Info Class Fold Superfamily Family Domain Species Provenance Source (Version) A d1niaa2 All beta proteins Cupredoxin-like Cupredoxins Multidomain cupredoxins Nitrite reductase, NIR, C-terminal domain (Achromobacter cycloclastes ) [TaxId: 223 ], SCOPe (2.08) A d1niaa1 All beta proteins Cupredoxin-like Cupredoxins Multidomain cupredoxins Nitrite reductase, NIR, N-terminal domain (Achromobacter cycloclastes ) [TaxId: 223 ], SCOPe (2.08) B d1niab2 All beta proteins Cupredoxin-like Cupredoxins Multidomain cupredoxins Nitrite reductase, NIR, C-terminal domain (Achromobacter cycloclastes ) [TaxId: 223 ], SCOPe (2.08) B d1niab1 All beta proteins Cupredoxin-like Cupredoxins Multidomain cupredoxins Nitrite reductase, NIR, N-terminal domain (Achromobacter cycloclastes ) [TaxId: 223 ], SCOPe (2.08) C d1niac2 All beta proteins Cupredoxin-like Cupredoxins Multidomain cupredoxins Nitrite reductase, NIR, C-terminal domain (Achromobacter cycloclastes ) [TaxId: 223 ], SCOPe (2.08) C d1niac1 All beta proteins Cupredoxin-like Cupredoxins Multidomain cupredoxins Nitrite reductase, NIR, N-terminal domain (Achromobacter cycloclastes ) [TaxId: 223 ], SCOPe (2.08)
Chains Type Family Name Domain Identifier Family Identifier Provenance Source (Version) A SCOP2B Superfamily Cupredoxins 8038727 3000886 SCOP2B (2022-06-29) A SCOP2B Superfamily Cupredoxins 8038726 3000886 SCOP2B (2022-06-29) B SCOP2B Superfamily Cupredoxins 8038727 3000886 SCOP2B (2022-06-29) B SCOP2B Superfamily Cupredoxins 8038726 3000886 SCOP2B (2022-06-29) C SCOP2B Superfamily Cupredoxins 8038727 3000886 SCOP2B (2022-06-29) C SCOP2B Superfamily Cupredoxins 8038726 3000886 SCOP2B (2022-06-29)
Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) A Cu-oxidase_2_2 e1niaA2 A: beta sandwiches X: Cupredoxin-like H: Cupredoxin-related (From Topology) T: Cupredoxin-related F: Cu-oxidase_2_2 ECOD (1.6) A Cu-oxidase_3_1 e1niaA1 A: beta sandwiches X: Cupredoxin-like H: Cupredoxin-related (From Topology) T: Cupredoxin-related F: Cu-oxidase_3_1 ECOD (1.6) B Cu-oxidase_2_2 e1niaB2 A: beta sandwiches X: Cupredoxin-like H: Cupredoxin-related (From Topology) T: Cupredoxin-related F: Cu-oxidase_2_2 ECOD (1.6) B Cu-oxidase_3_1 e1niaB1 A: beta sandwiches X: Cupredoxin-like H: Cupredoxin-related (From Topology) T: Cupredoxin-related F: Cu-oxidase_3_1 ECOD (1.6) C Cu-oxidase_2_2 e1niaC2 A: beta sandwiches X: Cupredoxin-like H: Cupredoxin-related (From Topology) T: Cupredoxin-related F: Cu-oxidase_2_2 ECOD (1.6) C Cu-oxidase_3_1 e1niaC1 A: beta sandwiches X: Cupredoxin-like H: Cupredoxin-related (From Topology) T: Cupredoxin-related F: Cu-oxidase_3_1 ECOD (1.6)
Chains Polymer Molecular Function Biological Process Cellular Component NITRITE REDUCTASE
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage Chains Enzyme Name Description Catalytic Residues nitrite reductase (copper type)
M-CSA #4 This family of enzymes is found in both denitrifying bacteria and fungi which reside in soil and aquatic ecosystems. Denitrification, the reduction of dissolved nitrate and nitrite to gaseous NO, N2 0 and N2 is an important process in the recycling of nitrogen in the biosphere, and is a key step in the nitrogen cycle resulting in the loss of terrestrial nitrogen to the atmosphere. It is chiefly carried out by denitrifying bacteria, which contain nitrate and nitrite reductases. The copper-containing family of enzymes is found in both denitrifying bacteria and fungi which reside in soil and aquatic ecosystems and uses copper ions as cofactors rather than the more common haem cd1 The enzymes in question catalyse the reduction of nitrite (NO2 - ) to NO + H2 O. They contain two copper centres, a Type I centre which receives electrons from pseudoazurin (a copper containing protein), and a type II centre which is the site of nitrite reduction.
 View MoreDefined by 11 residues: HIS:A-95 ASP:A-98 HIS:A-100 HIS:A-135 CYS:A-136 HIS:A-145 MET:A-150 HIS:B-255 GLU:B-279 THR:B-280 HIS:B-306
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M-CSA Motif Definition
Up to 10 residues are supported for Structure Motif searching, this motif has 11 residues.