SAXSdb — 5brl

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1. Protein Identity and Related Structures Protein Identity & Related Structures

StAR-related lipid transfer protein 4

Mus musculus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	STAR4_MOUSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–210； UniProt 13–222 Author chain B； PDBConstruct 1–210； UniProt 13–222

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	5brl
Deposition date deposition_date	2015-05-31
Structure title title	Crystal Structure of L124D STARD4
Keywords keywords	lipid binding protein, alpha helix grip; LIPID BINDING PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

5brl__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

5brl__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

5brl__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	17.73 Å
Rg (electron density)	16.44 Å
Total Rg	17.57 Å
Atom count	1693
Residues	210
Excluded volume	30034 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`5brl__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`5brl__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d5brla_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.129 — TBP-like
Superfamily Superfamily superfamily	d.129.3 — Bet v1-like
Family Family family	d.129.3.0 — automated matches

Domain ID domain_id	d5brlb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.129 — TBP-like
Superfamily Superfamily superfamily	d.129.3 — Bet v1-like
Family Family family	d.129.3.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id	5brlA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	530 — Alpha-D-Glucose-1,6-Bisphosphate; Chain A, domain 4
Homologous superfamily homologous superfamily	20 — START domain

Domain ID domain_id	5brlB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	530 — Alpha-D-Glucose-1,6-Bisphosphate; Chain A, domain 4
Homologous superfamily homologous superfamily	20 — START domain

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Unit-cell length a length_a	47.379 Å
Unit-cell length b length_b	41.683 Å
Unit-cell length c length_c	121.464 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.02 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.003 Å
Low-resolution limit resolution_low	39.426 Å
R factor r_factor	0.1900
R_work r_work	0.1880
R_free r_free	0.2264

Description description	StAR-related lipid transfer protein 4
Molecular weight formula_weight	24110.3 kDa
Mutation mutation	L124D
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	3579

Crystal Structure of L124D STARD4

1. Protein Identity and Related Structures Protein Identity & Related Structures

StAR-related lipid transfer protein 4

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

5brl__assembly_1__model_1

5brl__assembly_1__model_1 | I(q)

5brl__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Mus musculus
Common name common_name	Mouse
NCBI taxonomy ID ncbi_taxonomy_id	10090
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	193

Crystal Structure of L124D STARD4

1. Protein Identity and Related Structures Protein Identity & Related Structures

StAR-related lipid transfer protein 4

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

5brl__assembly_1__model_1

5brl__assembly_1__model_1 | I(q)

5brl__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)