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

e4cpiA1 - ECOD Domain | ECOD

ECOD/Domains/e4cpiA1

e4cpiA1

UID: 001319726

PDB

Range: A:16-134
PDB: 4CPI chain A(all domains)
UniProt: P22629 (all domains)

Molecule: STREPTAVIDIN

3D Structure

Loading viewer...

Related Domains

Browse other domains in Avidin →

Classification

AArchitecturebeta barrels(a.1)

XX-groupLipocalins/Streptavidin(9)

HH-groupAvidin/Streptavidin(9.2)

TT-groupAvidin/Streptavidin(9.2.1)

FFamilyAvidin(9.2.1.1)

Ligands

in contact, ≤ 4 Å

5-[(3aS,4S,6aR)-2-oxo-hexahydro-1H-thieno[3,4- d]imidazolidin-4-yl]-N'-{2,6-bis[4-(morpholine-4- sulfonyl)phenyl]phenyl}pentanehydrazideLH4
Calcium ionCA
metalwithin 5 Å only

+ 1 additive (DI(HYDROXYETHYL)ETHER)

Pfam Families

Avidin family

External Links

ECOD PDB View: 4CPI RCSB PDB: 4CPI PDBe: 4CPI UniProt: P22629

Downloads

Download Domain PDB Download Domain FASTA Full PDB Structure

DI(HYDROXYETHYL)ETHERPEG

Shown in the structure viewer. Drug annotations from DrugDomain.