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

e4qnrA2 - ECOD Domain | ECOD

ECOD/Domains/e4qnrA2

e4qnrA2

UID: 001320171

PDB

Range: A:7-171
PDB: 4QNR chain A(all domains)
UniProt: P37344 (all domains)
Gene: pspF

Molecule: Psp operon transcriptional activator

3D Structure

Loading viewer...

Related Domains

Browse other domains in Sigma54_activat →

Classification

AArchitecturea/b three-layered sandwiches(a.17)

XX-groupP-loop domains-like(2004)

HH-groupP-loop domains-related(2004.1)

TT-groupP-loop containing nucleoside triphosphate hydrolases(2004.1.1)

FFamilySigma54_activat(2004.1.1.22)

Ligands

in contact, ≤ 4 Å

ATPATP
drugDrugBank DB00171
Magnesium ionMG
metal

+ 2 additives (HEPES, Glycerin)

Pfam Families

PF00158Sigma54_activat

Sigma-54 interaction domain

ClanCL0023P-loop_NTPase

External Links

ECOD PDB View: 4QNR RCSB PDB: 4QNR PDBe: 4QNR UniProt: P37344

Downloads

Download Domain PDB Download Domain FASTA Full PDB Structure

HEPES

DrugBank DB16872

GlycerinGOL

DrugBank DB09462

Shown in the structure viewer. Drug annotations from DrugDomain.