7fyj

Crystal Structure of human FABP4 in complex with 5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl-4H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one, i.e. SMILES c1(cccc(c1C)Cl)OCC1=CC(=O)N2N=C(c3ccccc3)N=C2N1 with IC50=0.061 microM

Method: X-RAY DIFFRACTION

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

Fatty acid-binding protein, adipocyte

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	SULFATE ION × 2 (8S)-5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	SULFATE ION × 3 (8S)-5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FABP4_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–135； UniProt 1–132 Author chain B； PDBConstruct 4–135； UniProt 1–132

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	7fyj
Deposition date deposition_date	2023-04-27
Structure title title	Crystal Structure of human FABP4 in complex with 5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl-4H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one, i.e. SMILES c1(cccc(c1C)Cl)OCC1=CC(=O)N2N=C(c3ccccc3)N=C2N1 with IC50=0.061 microM
Keywords keywords	LIPID BINDING PROTEIN, FATTY ACID BINDING PROTEIN, CYTOPLASM, LIPID-BINDING, TRANSPORT, PROTEIN BINDING; 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.

7fyj__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

7fyj__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7fyj__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	15.50 Å
Rg (electron density)	14.14 Å
Total Rg	15.39 Å
Atom count	1091
Residues	135
Excluded volume	19371 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7fyj__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`7fyj__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 (4)

Entity 1 Entity 1 polymer

Description description	Fatty acid-binding protein, adipocyte
Molecular weight formula_weight	15022.2 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2178

GSHMCDAFVGTWKLVSSENFDDYMKEVGVGFATRKVAGMAKPNMIISVNGDVITIKSESTFKNTEISFILGQEFDEVTADDRKVKSTITLDGGVLVHVQKWDGKSTTIKRKREDDKLVVECVMKGVTSTRVYERA

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 3 Entity 3 non-polymer

Description description	(8S)-5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one
Molecular weight formula_weight	366.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	3

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	7fyjA01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	128 — Lipocalin
Homologous superfamily homologous superfamily	20 — Calycin beta-barrel core domain

Domain ID domain_id	7fyjB01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	128 — Lipocalin
Homologous superfamily homologous superfamily	20 — Calycin beta-barrel core domain

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Unit-cell length a length_a	137.087 Å
Unit-cell length b length_b	137.087 Å
Unit-cell length c length_c	137.087 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	48

Space group space_group	P 4 3 2
Space-group number int_tables_number	207
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	48.470 Å
R factor r_factor	0.2006
R_work r_work	0.1975
R_free r_free	0.2578

Crystal Structure of human FABP4 in complex with 5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl-4H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one, i.e. SMILES c1(cccc(c1C)Cl)OCC1=CC(=O)N2N=C(c3ccccc3)N=C2N1 with IC50=0.061 microM

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

Fatty acid-binding protein, adipocyte

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

7fyj__assembly_2__model_1

7fyj__assembly_2__model_1 | I(q)

7fyj__assembly_2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Crystal Structure of human FABP4 in complex with 5-[(3-chloro-2-methylphenoxy)methyl]-2-phenyl-4H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one, i.e. SMILES c1(cccc(c1C)Cl)OCC1=CC(=O)N2N=C(c3ccccc3)N=C2N1 with IC50=0.061 microM

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

Fatty acid-binding protein, adipocyte

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

7fyj__assembly_2__model_1

7fyj__assembly_2__model_1 | I(q)

7fyj__assembly_2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)