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

e9au4b2 - ECOD Domain | ECOD

ECOD/Domains/e9au4b2

e9au4b2

UID: 005249579

PDB

Range: b:414-723
PDB: 9AU4 chain b(all domains)

Molecule: Photosystem I P700 chlorophyll a apoprotein A2

3D Structure

Loading viewer...

Related Domains

Browse other domains in PsaA_PsaB →

Classification

AArchitecturealpha bundles(a.7)

XX-groupBacterial photosystem II reaction centre L and M subunits-like(5037)

HH-groupBacterial photosystem II reaction centre L and M subunits-like(5037.1)

TT-groupBacterial photosystem II reaction centre L and M subunits-like(5037.1.1)

FFamilyPsaA_PsaB(5037.1.1.2)

Ligands

in contact, ≤ 4 Å

beta,beta-carotene-4,4'-dione45D
2,3-dimethyl-5-[(2E,7R,11R)-3,7,11,15-tetramethylhexadec-2-en-1-yl]cyclohexa-2,5-diene-1,4-dioneA1AGD
Beta-caroteneBCR
Chloride ionCL
Chlorophyll aCLA
(3'R)-3'-hydroxy-beta,beta-caroten-4-one

Pfam Families

PF00223PsaA_PsaB

Photosystem I psaA/psaB protein

External Links

ECOD PDB View: 9AU4 RCSB PDB: 9AU4 PDBe: 9AU4

Downloads

Download Domain PDB Full PDB Structure

1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDELMG

Iron/sulfur clusterSF4

(1R,2S)-4-{(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(4S)-4-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl}-2,5,5-trimethylcyclohex-3-en-1-olZEX

Shown in the structure viewer.