PDBsum entry 4q5c

Oxidoreductase

PDB id: 4q5c

Contents

Protein chains

519 a.a.

Ligands

HEC ×16

SO3 ×5

MPD ×2

ACT ×4

TRS ×2

Metals

_CA ×2

Waters ×1177

PDB id:

4q5c

Name:

Oxidoreductase

Title:

Tvnir in complex with sulfite, middle dose data set

Structure:

Eight-heme nitrite reductase. Chain: a, b

Source:

Thioalkalivibrio nitratireducens. Organism_taxid: 186931

Resolution:

1.62Å R-factor: 0.158 R-free: 0.168

Authors:

V.A.Lazarenko,K.M.Polyakov,A.A.Trofimov,A.N.Popov,T.V.Tikhonova, A.V.Tikhonov,V.O.Popov

Key ref:

V.A.Lazarenko et al. X-Ray-Induced changes in the active site structure of octaheme cytochrome c nitrite reductase and its subst complexes. To be published, . PubMed id: 25945574

Date:

16-Apr-14 Release date: 03-Sep-14

Protein chains

L0DSL2  (NIR_THIND) -  Cytochrome c-552 from Thioalkalivibrio nitratireducens (strain DSM 14787 / UNIQEM 213 / ALEN2)

Seq: 553 a.a.

Struc: 519 a.a.

Enzyme reactions

• Enzyme class: E.C.1.7.2.2 - nitrite reductase (cytochrome; ammonia-forming).
• Reaction: 6 Fe(III)-[cytochrome c] + NH4⁺ + 2 H2O = 6 Fe(II)-[cytochrome c] + nitrite + 8 H⁺
• Cofactor: Ca(2+); Heme

Ca(2+) Heme (Bound ligand (Het Group name = HEC) matches with 95.45% similarity)

Molecule diagrams generated from .mol files obtained from the KEGG ftp site