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

e4kclB1 - ECOD Domain | ECOD

ECOD/Domains/e4kclB1

e4kclB1

UID: 001281405

PDB

Range: B:299-718
PDB: 4KCL chain B(all domains)
UniProt: P29476 (all domains)
Gene: Nos1

Molecule: Nitric oxide synthase, brain

3D Structure

Loading viewer...

Related Domains

Browse other domains in NO_synthase →

Classification

AArchitecturea+b complex topology(a.14)

XX-groupNitric oxide (NO) synthase oxygenase domain(262)

HH-groupNitric oxide (NO) synthase oxygenase domain(262.1)

TT-groupNitric oxide (NO) synthase oxygenase domain(262.1.1)

FFamilyNO_synthase(262.1.1.1)

Ligands

in contact, ≤ 4 Å

SapropterinH4B
drugDrugBank DB00360
FerrohemeHEM
drugDrugBank DB18267
N-(4-{2-[(3-{[(E)-imino(thiophen-2-yl)methyl]amino}benzyl)amino]ethyl}phenyl)thiophene-2-carboximidamide

Pfam Families

PF02898NO_synthase

Nitric oxide synthase, oxygenase domain

External Links

ECOD PDB View: 4KCL RCSB PDB: 4KCL PDBe: 4KCL UniProt: P29476

Downloads

Download Domain PDB Download Domain FASTA Full PDB Structure

Zinc ionZN

metal

+ 1 additive (Acetate)

AcetateACT
DrugBank DB14511

Shown in the structure viewer. Drug annotations from DrugDomain.