SAXSdb — 1lr8

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

Follistatin

Rattus norvegicus

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain A； UniProt 93–165	Fragment：heparin-binding domain	IHS D-MYO-INOSITOL-HEXASULPHATE × 1	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 6.5；289 K；15-25% PEG8000, 0.2-0.6 M Magnesium acetate, 0.1 M Sodium cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K	Resolution 2.10 Å R-free 0.251

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 1LR8	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1LR7 Crystal structure of Fs1, the heparin-binding domain of follistatin, complexed with the heparin analogue sucrose octasulphate (SOS) Deposited 2002-05-15	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 93–165（73 aa） Fragment：Heparin-binding domain	Not recorded	SO4 SULFATE ION × 5	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；30-35% 2-propanol, 0.6-0.7 M ammonium acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K	Resolution 1.50 Å R-free 0.222
1LR9 STRUCTURE OF Fs1, THE HEPARIN-BINDING DOMAIN OF FOLLISTATIN Deposited 2002-05-15	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 93–165（73 aa） Fragment：Heparin binding domain	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；30-35% PEG4000, 0.4 M Magnesium chloride, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K	Resolution 2.50 Å R-free 0.258
2ARP Activin A in complex with Fs12 fragment of follistatin Deposited 2005-08-21	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain F 93–241（149 aa） Fragment：Fs1-Fs2	Not recorded	NI NICKEL (II) ION × 6 1PG 2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL × 2 GOL GLYCEROL × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；293 K；PEG-MME 2000, Nickel chloride, Tris-HCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.00 Å R-free 0.254

3 other PDB entries and 3 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	FST_RAT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–74； UniProt 93–165

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	1lr8
Deposition date deposition_date	2002-05-15
Structure title title	Crystal structure of Fs1, the heparin-binding domain of follistatin, complexed with the heparin analogue D-myo-inositol hexasulphate (Ins6S)
Keywords keywords	cystine-rich, D-myo-inositol hexasulphate, HORMONE-GROWTH FACTOR COMPLEX; HORMONE/GROWTH FACTOR
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	15.45 Å
Radius of gyration Rg (electron density) rg_electron	14.88 Å
Forward intensity I(0) i0	1869540.00
Molecular weight molecular_weight	8271.0 kDa
Excluded volume excluded_volume	9861 Å³
Envelope volume envelope_volume	12404 Å³
Hydration-shell volume shell_volume	8064 Å³
Envelope diameter envelope_diameter	51.9 Å
Shell Rg shell_rg	18.58 Å
Envelope Rg envelope_rg	15.01 Å
Shape Rg shape_rg	14.85 Å
Total Rg total_rg	15.72 Å
Total atoms total_atoms	561
Residues n_residues	73
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	53.7 Å
Rg (real space) rg_real	15.52 Å
Rg uncertainty (real space) rg_real_error	0.41 Å
I(0) (real space) i0_real	1.8700e+06
I(0) uncertainty (real space) i0_real_error	2.2840e+04
Rg (reciprocal space) rg_reciprocal	15.52 Å
I(0) (reciprocal space) i0_reciprocal	1870000.0000
Solution quality estimate total_estimate	0.7905
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	16.3 Å
Skewness Skewness skewness	0.352
Kurtosis Kurtosis kurtosis	-0.512
Angular range angular_range	— – 0.5000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	148800.0000
Real-space data points n_real_points	80
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.858; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.698; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Follistatin
Molecular weight formula_weight	8342.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	582

METCENVDCGPGKKCRMNKKNKPRCVCAPDCSNITWKGPVCGLDGKTYRNECALLKARCKEQPELEVQYQGKCK

来源 Source

来源生物 organism	Rattus norvegicus
通用名 common_name	Norway rat
NCBI Class编号 ncbi_taxonomy_id	10116
宿主生物 host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	D-MYO-INOSITOL-HEXASULPHATE
Molecular weight formula_weight	660.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	21

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7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1lr8a1
Class class	g — Small proteins
Fold Fold fold	g.3 — Knottins (small inhibitors, toxins, lectins)
Superfamily Superfamily superfamily	g.3.11 — EGF/Laminin
Family Family family	g.3.11.3 — Follistatin (FS) module N-terminal domain, FS-N

Domain ID domain_id	d1lr8a2
Class class	g — Small proteins
Fold Fold fold	g.68 — Kazal-type serine protease inhibitors
Superfamily Superfamily superfamily	g.68.1 — Kazal-type serine protease inhibitors
Family Family family	g.68.1.1 — Ovomucoid domain III-like

CATH v4.4 (1 domains)

Domain ID domain_id	1lr8A00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

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8. Citations (1)

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Unit-cell length a length_a	21.499 Å
Unit-cell length b length_b	38.208 Å
Unit-cell length c length_c	77.945 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	4

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	38.920 Å
R factor r_factor	0.2222
R_work r_work	0.2207
R_free r_free	0.2513

fit	/app/data/saxs_computation/lr/1lr8/1lr8.fit
pddf	/app/data/pr_computation/lr/1lr8/1lr8.pr.out
profile	/app/data/saxs_computation/lr/1lr8/1lr8.dat

Crystal structure of Fs1, the heparin-binding domain of follistatin, complexed with the heparin analogue D-myo-inositol hexasulphate (Ins6S)

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

Follistatin

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction