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

Resources

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

© 2014-2026 Grishin Lab / HHMI / UTSW

e4s21A3 - ECOD Domain | ECOD

ECOD/Domains/e4s21A3

e4s21A3

UID: 001566451

PDB

Range: A:319-503
PDB: 4S21 chain A(all domains)
UniProt: Q6N5G3 (all domains)
Gene: phyB1

Molecule: histidine kinase (EC 2.7.13.3)

3D Structure

Loading viewer...

Related Domains

Browse other domains in PHY →

Classification

AArchitecturea+b three layers(a.12)

XX-groupProfilin-like(223)

HH-groupsensor domains(223.1)

TT-groupsensor domains(223.1.1)

FFamilyPHY(223.1.1.1)

Pfam Families

Phytochrome region

ClanCL0161GAF

External Links

ECOD PDB View: 4S21 RCSB PDB: 4S21 PDBe: 4S21 UniProt: Q6N5G3

Downloads

Download Domain PDB Download Domain FASTA Full PDB Structure