13fl

Structure of FabS1CE2_P2a in complex with the N-terminal domain of PD-L1

Method: X-RAY DIFFRACTION Dmax: 102.0 Å Quality: GOOD

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

Programmed cell death 1 ligand 1

Homo sapiens

UniProt Q9NZQ7

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 heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain C; UniProt 19–132 Not recorded FabS1CE2_P2a heavy chain × 1 FabS1CE2_P2a light chain (Trastuzumab Fab Light Chain) × 1 1,2-ETHANEDIOL × 1 CHLORIDE ION × 3 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.22 Å R-free 0.239

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.

74 other PDB entries and 124 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PD1L1_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–114; UniProt 19–132

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.

SAXS scattering curve SAXS Profile

SAXS profile for 13fl

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 13fl
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2. Structure Basics 2. Structure Basics

Entry ID entry_id13fl
Deposition date deposition_date2026-05-04
最后修订 last_revision2026-06-03
Structure title titleStructure of FabS1CE2_P2a in complex with the N-terminal domain of PD-L1
Keywords keywordshigh-affinity binding, immune suppression, tumour growth suppressor, cell signalling, PD-L1, IMMUNE SYSTEM; IMMUNE SYSTEM
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.74
Radius of gyration Rg (electron density) rg_electron29.50
Forward intensity I(0) i057741500.00
Molecular weight molecular_weight59706.0 kDa
Excluded volume excluded_volume74645 ų
Envelope volume envelope_volume95478 ų
Hydration-shell volume shell_volume28798 ų
Envelope diameter envelope_diameter104.4
Shell Rg shell_rg34.63
Envelope Rg envelope_rg29.43
Shape Rg shape_rg29.48
Total Rg total_rg30.06
Total atoms total_atoms4203
Residues n_residues545
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

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

Maximum dimension Dmax dmax102.0
Rg (real space) rg_real29.97
Rg uncertainty (real space) rg_real_error1.12
I(0) (real space) i0_real5.7740e+07
I(0) uncertainty (real space) i0_real_error9.6390e+05
Rg (reciprocal space) rg_reciprocal29.87
I(0) (reciprocal space) i0_reciprocal57740000.0000
Solution quality estimate total_estimate0.8511
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary30.8
Skewness Skewness skewness0.541
Kurtosis Kurtosis kurtosis-0.229
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha10340000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.783; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 0.828; Smooth: 0.889

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

8. Citations (1)

9. Files and Curves (10)