9UO1 | pdb_00009uo1

Cryo-EM structure of human organic solute transporter Ost-alpha/beta bound with DHEAS

PDB DOI: https://doi.org/10.2210/pdb9UO1/pdb
EM Map EMD-64369: EMDB EMDataResource

Classification: TRANSPORT PROTEIN
Organism(s): Homo sapiens
Expression System: Homo sapiens
Mutation(s): No

Deposited: 2025-04-24 Released: 2025-12-10
Deposition Author(s): Yang, X., Xu, E.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.90 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

Structures of Ostalpha/beta reveal a unique fold and bile acid transport mechanism

Yang, X., Cui, N., Li, T., He, X., Zhang, H., Wu, C., Li, Y., Ma, X., Xu, E.

(2026) Nature

DOI: https://doi.org/10.1038/s41586-025-10029-7

Macromolecule Content

Total Structure Weight: 132.17 kDa
Atom Count: 7,238
Modeled Residue Count: 748
Deposited Residue Count: 984
Unique protein chains: 2

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Organic solute transporter subunit alpha	A, C	351	Homo sapiens	Mutation(s): 0 Gene Names: SLC51A, OSTA
UniProt & NIH Common Fund Data Resources
Find proteins for Q86UW1 (Homo sapiens) Explore Q86UW1 Go to UniProtKB: Q86UW1
PHAROS: Q86UW1 GTEx: ENSG00000163959
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q86UW1
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Organic solute transporter subunit beta	B, D	141	Homo sapiens	Mutation(s): 0 Gene Names: SLC51B, OSTB
UniProt & NIH Common Fund Data Resources
Find proteins for Q86UW2 (Homo sapiens) Explore Q86UW2 Go to UniProtKB: Q86UW2
PHAROS: Q86UW2 GTEx: ENSG00000186198
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q86UW2
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
76F (Subject of Investigation/LOI) Query on 76F Download Ideal Coordinates CCD File SDF format, chain HA [auth C] SDF format, chain F [auth A] SDF format, chain E [auth A] SDF format, chain DA [auth A] MOL2 format, chain HA [auth C] MOL2 format, chain F [auth A] MOL2 format, chain E [auth A] MOL2 format, chain DA [auth A] mmCIF format, chain HA [auth C] mmCIF format, chain F [auth A] mmCIF format, chain E [auth A] mmCIF format, chain DA [auth A]	DA [auth A], E [auth A], F [auth A], HA [auth C]	(7E,21R,24S)-27-amino-24-hydroxy-18,24-dioxo-19,23,25-trioxa-24lambda~5~-phosphaheptacos-7-en-21-yl (9Z,12E)-octadeca-9,12-dienoate C₄₁ H₇₆ N O₈ P SUGLKZVXTGKYMP-QNGDKYGQSA-N		Interactions Focus chain DA [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain HA [auth C] Interactions & Density Focus chain DA [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain HA [auth C]
P0E (Subject of Investigation/LOI) Query on P0E Download Ideal Coordinates CCD File SDF format, chain KA [auth C] SDF format, chain G [auth A] MOL2 format, chain KA [auth C] MOL2 format, chain G [auth A] mmCIF format, chain KA [auth C] mmCIF format, chain G [auth A]	G [auth A], KA [auth C]	PHOSPHATIDYL ETHANOL C₃₉ H₇₃ O₉ P PGYPLYNHOCZJEB-JSTCSLLMSA-N		Interactions Focus chain G [auth A] Focus chain KA [auth C] Interactions & Density Focus chain G [auth A] Focus chain KA [auth C]
LPE (Subject of Investigation/LOI) Query on LPE Download Ideal Coordinates CCD File SDF format, chain LA [auth C] SDF format, chain H [auth A] MOL2 format, chain LA [auth C] MOL2 format, chain H [auth A] mmCIF format, chain LA [auth C] mmCIF format, chain H [auth A]	H [auth A], LA [auth C]	1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE C₂₆ H₅₇ N O₆ P XKBJVQHMEXMFDZ-AREMUKBSSA-O		Interactions Focus chain H [auth A] Focus chain LA [auth C] Interactions & Density Focus chain H [auth A] Focus chain LA [auth C]
CLR (Subject of Investigation/LOI) Query on CLR Download Ideal Coordinates CCD File SDF format, chain WA [auth C] SDF format, chain VA [auth C] SDF format, chain UA [auth C] SDF format, chain TA [auth C] SDF format, chain SA [auth C] SDF format, chain S [auth A] SDF format, chain RA [auth C] SDF format, chain R [auth A] SDF format, chain QA [auth C] SDF format, chain Q [auth A] SDF format, chain PA [auth C] SDF format, chain P [auth A] SDF format, chain OA [auth C] SDF format, chain O [auth A] SDF format, chain NA [auth C] SDF format, chain N [auth A] SDF format, chain MA [auth C] SDF format, chain M [auth A] SDF format, chain L [auth A] SDF format, chain K [auth A] SDF format, chain JA [auth C] SDF format, chain J [auth A] SDF format, chain IA [auth C] SDF format, chain I [auth A] SDF format, chain HB [auth D] SDF format, chain GB [auth D] SDF format, chain GA [auth B] SDF format, chain FB [auth D] SDF format, chain FA [auth B] SDF format, chain EA [auth B] SDF format, chain CA [auth A] SDF format, chain BA [auth A] MOL2 format, chain WA [auth C] MOL2 format, chain VA [auth C] MOL2 format, chain UA [auth C] MOL2 format, chain TA [auth C] MOL2 format, chain SA [auth C] MOL2 format, chain S [auth A] MOL2 format, chain RA [auth C] MOL2 format, chain R [auth A] MOL2 format, chain QA [auth C] MOL2 format, chain Q [auth A] MOL2 format, chain PA [auth C] MOL2 format, chain P [auth A] MOL2 format, chain OA [auth C] MOL2 format, chain O [auth A] MOL2 format, chain NA [auth C] MOL2 format, chain N [auth A] MOL2 format, chain MA [auth C] MOL2 format, chain M [auth A] MOL2 format, chain L [auth A] MOL2 format, chain K [auth A] MOL2 format, chain JA [auth C] MOL2 format, chain J [auth A] MOL2 format, chain IA [auth C] MOL2 format, chain I [auth A] MOL2 format, chain HB [auth D] MOL2 format, chain GB [auth D] MOL2 format, chain GA [auth B] MOL2 format, chain FB [auth D] MOL2 format, chain FA [auth B] MOL2 format, chain EA [auth B] MOL2 format, chain CA [auth A] MOL2 format, chain BA [auth A] mmCIF format, chain WA [auth C] mmCIF format, chain VA [auth C] mmCIF format, chain UA [auth C] mmCIF format, chain TA [auth C] mmCIF format, chain SA [auth C] mmCIF format, chain S [auth A] mmCIF format, chain RA [auth C] mmCIF format, chain R [auth A] mmCIF format, chain QA [auth C] mmCIF format, chain Q [auth A] mmCIF format, chain PA [auth C] mmCIF format, chain P [auth A] mmCIF format, chain OA [auth C] mmCIF format, chain O [auth A] mmCIF format, chain NA [auth C] mmCIF format, chain N [auth A] mmCIF format, chain MA [auth C] mmCIF format, chain M [auth A] mmCIF format, chain L [auth A] mmCIF format, chain K [auth A] mmCIF format, chain JA [auth C] mmCIF format, chain J [auth A] mmCIF format, chain IA [auth C] mmCIF format, chain I [auth A] mmCIF format, chain HB [auth D] mmCIF format, chain GB [auth D] mmCIF format, chain GA [auth B] mmCIF format, chain FB [auth D] mmCIF format, chain FA [auth B] mmCIF format, chain EA [auth B] mmCIF format, chain CA [auth A] mmCIF format, chain BA [auth A]	BA [auth A] CA [auth A] EA [auth B] FA [auth B] FB [auth D] BA [auth A], CA [auth A], EA [auth B], FA [auth B], FB [auth D], GA [auth B], GB [auth D], HB [auth D], I [auth A], IA [auth C], J [auth A], JA [auth C], K [auth A], L [auth A], M [auth A], MA [auth C], N [auth A], NA [auth C], O [auth A], OA [auth C], P [auth A], PA [auth C], Q [auth A], QA [auth C], R [auth A], RA [auth C], S [auth A], SA [auth C], TA [auth C], UA [auth C], VA [auth C], WA [auth C]	CHOLESTEROL C₂₇ H₄₆ O HVYWMOMLDIMFJA-DPAQBDIFSA-N		Interactions Focus chain BA [auth A] Focus chain CA [auth A] Focus chain EA [auth B] Focus chain FA [auth B] Focus chain FB [auth D] Focus chain GA [auth B] Focus chain GB [auth D] Focus chain HB [auth D] Focus chain I [auth A] Focus chain IA [auth C] Focus chain J [auth A] Focus chain JA [auth C] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain MA [auth C] Focus chain N [auth A] Focus chain NA [auth C] Focus chain O [auth A] Focus chain OA [auth C] Focus chain P [auth A] Focus chain PA [auth C] Focus chain Q [auth A] Focus chain QA [auth C] Focus chain R [auth A] Focus chain RA [auth C] Focus chain S [auth A] Focus chain SA [auth C] Focus chain TA [auth C] Focus chain UA [auth C] Focus chain VA [auth C] Focus chain WA [auth C] Interactions & Density Focus chain BA [auth A] Focus chain CA [auth A] Focus chain EA [auth B] Focus chain FA [auth B] Focus chain FB [auth D] Focus chain GA [auth B] Focus chain GB [auth D] Focus chain HB [auth D] Focus chain I [auth A] Focus chain IA [auth C] Focus chain J [auth A] Focus chain JA [auth C] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain MA [auth C] Focus chain N [auth A] Focus chain NA [auth C] Focus chain O [auth A] Focus chain OA [auth C] Focus chain P [auth A] Focus chain PA [auth C] Focus chain Q [auth A] Focus chain QA [auth C] Focus chain R [auth A] Focus chain RA [auth C] Focus chain S [auth A] Focus chain SA [auth C] Focus chain TA [auth C] Focus chain UA [auth C] Focus chain VA [auth C] Focus chain WA [auth C]
ZWY (Subject of Investigation/LOI) Query on ZWY Download Ideal Coordinates CCD File SDF format, chain Z [auth A] SDF format, chain EB [auth C] SDF format, chain DB [auth C] SDF format, chain AA [auth A] MOL2 format, chain Z [auth A] MOL2 format, chain EB [auth C] MOL2 format, chain DB [auth C] MOL2 format, chain AA [auth A] mmCIF format, chain Z [auth A] mmCIF format, chain EB [auth C] mmCIF format, chain DB [auth C] mmCIF format, chain AA [auth A]	AA [auth A], DB [auth C], EB [auth C], Z [auth A]	17-oxoandrost-5-en-3beta-yl hydrogen sulfate C₁₉ H₂₈ O₅ S CZWCKYRVOZZJNM-USOAJAOKSA-N		Interactions Focus chain AA [auth A] Focus chain DB [auth C] Focus chain EB [auth C] Focus chain Z [auth A] Interactions & Density Focus chain AA [auth A] Focus chain DB [auth C] Focus chain EB [auth C] Focus chain Z [auth A]
PLM (Subject of Investigation/LOI) Query on PLM Download Ideal Coordinates CCD File SDF format, chain ZA [auth C] SDF format, chain YA [auth C] SDF format, chain Y [auth A] SDF format, chain XA [auth C] SDF format, chain X [auth A] SDF format, chain W [auth A] SDF format, chain V [auth A] SDF format, chain U [auth A] SDF format, chain T [auth A] SDF format, chain CB [auth C] SDF format, chain BB [auth C] SDF format, chain AB [auth C] MOL2 format, chain ZA [auth C] MOL2 format, chain YA [auth C] MOL2 format, chain Y [auth A] MOL2 format, chain XA [auth C] MOL2 format, chain X [auth A] MOL2 format, chain W [auth A] MOL2 format, chain V [auth A] MOL2 format, chain U [auth A] MOL2 format, chain T [auth A] MOL2 format, chain CB [auth C] MOL2 format, chain BB [auth C] MOL2 format, chain AB [auth C] mmCIF format, chain ZA [auth C] mmCIF format, chain YA [auth C] mmCIF format, chain Y [auth A] mmCIF format, chain XA [auth C] mmCIF format, chain X [auth A] mmCIF format, chain W [auth A] mmCIF format, chain V [auth A] mmCIF format, chain U [auth A] mmCIF format, chain T [auth A] mmCIF format, chain CB [auth C] mmCIF format, chain BB [auth C] mmCIF format, chain AB [auth C]	AB [auth C] BB [auth C] CB [auth C] T [auth A] U [auth A] AB [auth C], BB [auth C], CB [auth C], T [auth A], U [auth A], V [auth A], W [auth A], X [auth A], XA [auth C], Y [auth A], YA [auth C], ZA [auth C]	PALMITIC ACID C₁₆ H₃₂ O₂ IPCSVZSSVZVIGE-UHFFFAOYSA-N		Interactions Focus chain AB [auth C] Focus chain BB [auth C] Focus chain CB [auth C] Focus chain T [auth A] Focus chain U [auth A] Focus chain V [auth A] Focus chain W [auth A] Focus chain X [auth A] Focus chain XA [auth C] Focus chain Y [auth A] Focus chain YA [auth C] Focus chain ZA [auth C] Interactions & Density Focus chain AB [auth C] Focus chain BB [auth C] Focus chain CB [auth C] Focus chain T [auth A] Focus chain U [auth A] Focus chain V [auth A] Focus chain W [auth A] Focus chain X [auth A] Focus chain XA [auth C] Focus chain Y [auth A] Focus chain YA [auth C] Focus chain ZA [auth C]