ECODEvolutionary Classification of Protein Domains

Home Browse Search Download Help

About ECOD

ECOD (Evolutionary Classification of Protein Domains) is a hierarchical classification of protein domains based on evolutionary relationships. It combines automated sequence and structure analysis with manual curation.

Quick Links

Browse Classification
Search
Download Data
Documentation
Privacy

Resources

Grishin Lab
UT Southwestern
RCSB PDB
AlphaFold DB
ecod.database@gmail.com

© 2014-2026 Grishin Lab / HHMI / UTSW

e3vksA12 - ECOD Domain | ECOD

ECOD/Domains/e3vksA12

e3vksA12

UID: 001148359

PDB

Range: A:175-345
PDB: 3VKS chain A(all domains)
UniProt: Q76KB0 (all domains)
Gene: nii3

Molecule: Nitrite reductase

3D Structure

Loading viewer...

Related Domains

Browse other domains in NIR_SIR →

Classification

AArchitecturea+b three layers(a.12)

XX-groupSulfite reductase hemoprotein (SiRHP), domains 2 and 4(296)

HH-groupSulfite reductase hemoprotein (SiRHP), domains 2 and 4(296.1)

TT-groupSulfite reductase hemoprotein (SiRHP), domains 2 and 4(296.1.1)

FFamilyNIR_SIR(296.1.1.1)

Ligands

in contact, ≤ 4 Å

SirohemeSRM
drugDrugBank DB02832
Chloride ionCL
Nitric oxideNO

Shown in the structure viewer. Drug annotations from DrugDomain.

Pfam Families

PF01077NIR_SIR

Nitrite and sulphite reductase 4Fe-4S domain

External Links

ECOD PDB View: 3VKS RCSB PDB: 3VKS PDBe: 3VKS UniProt: Q76KB0

Downloads

Download Domain PDB Download Domain FASTA Full PDB Structure