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

P18405_F1_nD1 - ECOD Domain | ECOD

ECOD/Domains/P18405_F1_nD1

P18405_F1_nD1

UID: 003545780

AlphaFold

Range: 6-259
AlphaFold: AF-P18405
UniProt: P18405 (all domains)
Gene: SRD5A1

Protein: 3-oxo-5-alpha-steroid 4-dehydrogenase 1 (EC 1.3.1.22) (SR type 1) (Steroid 5-alpha-reductase 1) (S5AR 1)

3D Structure

Loading viewer...

Related Domains

Browse other domains in Steroid_dh →

Classification

AArchitecturealpha bundles(a.7)

XX-groupIsoprenylcysteine carboxyl methyltransferase (ICMT)(3447)

HH-groupIsoprenylcysteine carboxyl methyltransferase (ICMT)(3447.1)

TT-groupIsoprenylcysteine carboxyl methyltransferase (ICMT)(3447.1.1)

FFamilySteroid_dh(3447.1.1.5)

Ligands

in contact, ≤ 4 Å

Levonorgestrel
drugDrugBank DB00367within 5 Å only
DB01126
drugDrugBank DB01126within 5 Å only
Finasteride

Pfam Families

PF02544Steroid_dh

3-oxo-5-alpha-steroid 4-dehydrogenase

ClanCL0115Steroid_dh

External Links

AlphaFold DB: P18405 UniProt: P18405

Representative

This domain is classified based on similarity to:

Downloads

Download Domain PDB Download Domain FASTA Full AlphaFold Structure (PDB)Full AlphaFold Structure (mmCIF)

Domain coordinates: residues 6-259

drugDrugBank DB01216within 5 Å only

DB09389

drugDrugBank DB09389within 5 Å only

Shown in the structure viewer. Drug annotations from DrugDomain.