SAXSdb — 1npu

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

Programmed cell death protein 1

Mus musculus

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 34–150	Fragment：Ig V-type domain Mutation：C50S	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；PEG8000, NaAc, NaCacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.00 Å R-free 0.228

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 1NPU	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3BIK Crystal Structure of the PD-1/PD-L1 Complex Deposited 2007-11-30	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 25–157（133 aa） Fragment：EXTRACELLULAR DOMAIN	Mutation：YES	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6；298 K；20% PEG 3350, 200MM NH4H2PO4, pH 6.00, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 2.65 Å R-free 0.268
3BIK Crystal Structure of the PD-1/PD-L1 Complex Deposited 2007-11-30	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 25–157（133 aa） Fragment：EXTRACELLULAR DOMAIN	Mutation：YES	GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6；298 K；20% PEG 3350, 200MM NH4H2PO4, pH 6.00, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 2.65 Å R-free 0.268
3BP5 Crystal structure of the mouse PD-1 and PD-L2 complex Deposited 2007-12-18	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 34–150（117 aa） Fragment：Extrocellular domain	Mutation：C50S	GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions Sitting drop；pH 8.5；291 K；20% PEG 6000, 0.1 M Tris pH 8.5, Sitting drop, temperature 291K	Resolution 1.80 Å R-free 0.228
3BP6 Crystal structure of the mouse PD-1 Mutant and PD-L2 complex Deposited 2007-12-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 34–150（117 aa） Fragment：Extrocellular domain	Mutation：C50S, A99L	GOL GLYCEROL × 4	X-RAY DIFFRACTION X-ray crystallization conditions Sitting drop；pH 8.5；291 K；20% PEG 6000, 0.1 M Tris pH 8.5, Sitting drop, temperature 291K	Resolution 1.60 Å R-free 0.218
3RNK Crystal structure of the complex between mouse PD-1 mutant and PD-L2 IgV domain Deposited 2011-04-22	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 34–150（117 aa） Fragment：Residues 34-150	Mutation：C83S, A132L	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1M HEPES pH 7, 0.1M Magnesium chloride, 15% PEG 4000, Vapor diffusion, Sitting drop, temperature 291K	Resolution 1.74 Å R-free 0.247
3RNQ Crystal structure of the complex between the extracellular domains of mouse PD-1 mutant and PD-L2 Deposited 2011-04-22	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 34–150（117 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；298 K；0.1M Tris pH 8, 17.5% PEG 6000, Vapor diffusion, Sitting drop, temperature 298K	Resolution 1.60 Å R-free 0.207
3SBW Crystal structure of the complex between the extracellular domains of mouse PD-1 mutant and human PD-L1 Deposited 2011-06-06	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 34–150（117 aa） Fragment：UNP residues 34-150	Mutation：C83S, A132L	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；277 K；0.1M Sodium citrate pH 5, 20% PEG 8000, Vapor diffusion, Sitting drop, temperature 277K	Resolution 2.28 Å R-free 0.270
3SBW Crystal structure of the complex between the extracellular domains of mouse PD-1 mutant and human PD-L1 Deposited 2011-06-06	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 34–150（117 aa） Fragment：UNP residues 34-150	Mutation：C83S, A132L	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；277 K；0.1M Sodium citrate pH 5, 20% PEG 8000, Vapor diffusion, Sitting drop, temperature 277K	Resolution 2.28 Å R-free 0.270

6 other PDB entries and 8 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PDCD1_MOUSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–117； UniProt 34–150

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	1npu
Deposition date deposition_date	2003-01-20
Structure title title	CRYSTAL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF MURINE PD-1
Keywords keywords	;Ig V-type domain, Structural Genomics, PSI, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGXRC, IMMUNE SYSTEM ;; IMMUNE SYSTEM
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	15.05 Å
Radius of gyration Rg (electron density) rg_electron	14.07 Å
Forward intensity I(0) i0	3499970.00
Molecular weight molecular_weight	12861.0 kDa
Excluded volume excluded_volume	15938 Å³
Envelope volume envelope_volume	17817 Å³
Hydration-shell volume shell_volume	11147 Å³
Envelope diameter envelope_diameter	57.7 Å
Shell Rg shell_rg	19.44 Å
Envelope Rg envelope_rg	14.69 Å
Shape Rg shape_rg	14.05 Å
Total Rg total_rg	15.22 Å
Total atoms total_atoms	906
Residues n_residues	116
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	59.8 Å
Rg (real space) rg_real	15.05 Å
Rg uncertainty (real space) rg_real_error	0.58 Å
I(0) (real space) i0_real	3.5000e+06
I(0) uncertainty (real space) i0_real_error	4.1080e+04
Rg (reciprocal space) rg_reciprocal	15.05 Å
I(0) (reciprocal space) i0_reciprocal	3500000.0000
Solution quality estimate total_estimate	0.7707
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	17.4 Å
Skewness Skewness skewness	0.414
Kurtosis Kurtosis kurtosis	-0.003
Angular range angular_range	— – 0.5000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	853500.0000
Real-space data points n_real_points	80
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.446; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.680; Smooth: 0.998

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (2)

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7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1npua_
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.1 — V set domains (antibody variable domain-like)

CATH v4.4 (1 domains)

Domain ID domain_id	1npuA00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

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8. Citations (1)

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Unit-cell length a length_a	23.965 Å
Unit-cell length b length_b	50.802 Å
Unit-cell length c length_c	75.278 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	2.000 Å
Low-resolution limit resolution_low	18.780 Å
R factor r_factor	0.1980
R_work r_work	0.1980
R_free r_free	0.2280

Description description	Programmed cell death protein 1
Molecular weight formula_weight	13176.7 kDa
Mutation mutation	C50S
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	979

CRYSTAL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF MURINE PD-1

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

Programmed cell death protein 1

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

6. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 water

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

来源生物 organism	Mus musculus
通用名 common_name	house mouse
NCBI Class编号 ncbi_taxonomy_id	10090
宿主生物 host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	73

fit	/app/data/saxs_computation/np/1npu/1npu.fit
pddf	/app/data/pr_computation/np/1npu/1npu.pr.out
profile	/app/data/saxs_computation/np/1npu/1npu.dat