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

e3qibA2 - ECOD Domain | ECOD

ECOD/Domains/e3qibA2

e3qibA2

UID: 000180723

PDB

Range: A:1-81
PDB: 3QIB chain A(all domains)
UniProt: P04224 (all domains)

Molecule: H-2 class II histocompatibility antigen, E-K alpha chain

3D Structure

Loading viewer...

Related Domains

Browse other domains in MHC_II_alpha →

Classification

AArchitecturea+b two layers(a.11)

XX-groupMHC antigen-recognition domain(233)

HH-groupMHC antigen-recognition domain(233.1)

TT-groupMHC antigen-recognition domain(233.1.1)

FFamilyMHC_II_alpha(233.1.1.3)

Pfam Families

PF00993MHC_II_alpha

Class II histocompatibility antigen, alpha domain

ClanCL0343MHC

External Links

ECOD PDB View: 3QIB RCSB PDB: 3QIB PDBe: 3QIB UniProt: P04224

Downloads

Download Domain PDB Download Domain FASTA Full PDB Structure