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

e3nuaA1 - ECOD Domain | ECOD

ECOD/Domains/e3nuaA1

e3nuaA1

UID: 000140381

PDB

Range: A:0-235
PDB: 3NUA chain A(all domains)
UniProt: Q0TTB4 (all domains)
Gene: purC

Molecule: Phosphoribosylaminoimidazole-succinocarboxamide synthase

3D Structure

Loading viewer...

Related Domains

Browse other domains in SAICAR_synt →

Classification

AArchitecturea+b complex topology(a.14)

XX-groupProtein kinase/SAICAR synthase/ATP-grasp(206)

HH-groupProtein kinase/SAICAR synthase/ATP-grasp(206.1)

TT-groupSAICAR synthase(206.1.2)

FFamilySAICAR_synt(206.1.2.1)

Ligands

in contact, ≤ 4 Å

Adenosine disphosphateADP
drugDrugBank DB16833
Adenosine phosphateAMP
drugDrugBank DB00131

+ 2 additives (Citric acid, Glycerin)

Pfam Families

PF01259SAICAR_synt

SAICAR synthetase

External Links

ECOD PDB View: 3NUA RCSB PDB: 3NUA PDBe: 3NUA UniProt: Q0TTB4

Downloads

Download Domain PDB Download Domain FASTA Full PDB Structure

Citric acidCIT
DrugBank DB04272
GlycerinGOL
DrugBank DB09462

Shown in the structure viewer. Drug annotations from DrugDomain.