9LSZ | pdb_00009lsz

Inward-open Structure of human B0AT1

PDB DOI: https://doi.org/10.2210/pdb9LSZ/pdb
EM Map EMD-63360: EMDB EMDataResource

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

Deposited: 2025-02-05 Released: 2026-02-18
Deposition Author(s): Imazu, T., Miyaguchi, I., Hiraizumi, M.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 3.11 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 9LSZ

This is version 1.0 of the entry. See complete history.

Literature

Structure-guided development of a potent human B0AT1 inhibitor effective in a mouse model of phenylketonuria

Imazu, T., Akashi, T., Hiraizumi, M., Inui, Y., Sasaki, W., Takahashi, T., Todoroki, H., Kumanomidou, T., Hisano, H., Asada, H., Kusakizako, T., Nishizawa, T., Iwata, S., Nureki, O., Miyaguchi, I.

To be published.

Macromolecule Content

Total Structure Weight: 130.67 kDa
Atom Count: 6,458
Modeled Residue Count: 813
Deposited Residue Count: 1,174
Unique protein chains: 3

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sodium-dependent neutral amino acid transporter B(0)AT1	A	614	Homo sapiens	Mutation(s): 0 Gene Names: SLC6A19, B0AT1
UniProt & NIH Common Fund Data Resources
Find proteins for Q695T7 (Homo sapiens) Explore Q695T7 Go to UniProtKB: Q695T7
PHAROS: Q695T7 GTEx: ENSG00000174358
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q695T7
Glycosylation
Glycosylation Sites: 1	Glycosylation Focus chain A	Go to GlyGen: Q695T7-1
Sequence Annotations Expand
Reference Sequence

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Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Antibody Fab Light chain	B [auth L]	225	Mus musculus	Mutation(s): 0

Find similar proteins by:

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Antibody Fab Heavy chain	C [auth H]	335	Mus musculus	Mutation(s): 0

Oligosaccharides

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	D [auth B]	2		N-Glycosylation	Interactions Focus chain D [auth B] Interactions & Density Focus chain D [auth B]
Glycosylation Resources
GlyTouCan: G42666HT GlyCosmos: G42666HT GlyGen: G42666HT

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 3.11 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	REFMAC	5.8.0267

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-02-18

Deposition Author(s):

Funding Organization	Location	Grant Number
Not funded		--

Revision History (Full details and data files)

Version 1.0: 2026-02-18
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.