4np2

Crystal structure of the murine CD44 hyaluronan binding domain complex with a small molecule

Method: X-RAY DIFFRACTION Dmax: 52.1 Å Quality: GOOD

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

CD44 antigen

Mus musculus

UniProt P15379

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 23–171 Fragment:HYALURONAN BINDING DOMAIN, RESIDUES 23-171 2L1 2-[(4-methyl-1H-imidazol-5-yl)methyl]-1,2,3,4-tetrahydroisoquinoline × 1 MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID × 1 SO4 SULFATE ION × 2 DMS DIMETHYL SULFOXIDE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;298 K;PEG MME 5000, MES, (NH4)2SO4, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 1.75 Å R-free 0.217

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.

52 other PDB entries and 52 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CD44_MOUSE
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–150; UniProt 23–171

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 4np2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4np2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4np2
Deposition date deposition_date2013-11-20
Structure title titleCrystal structure of the murine CD44 hyaluronan binding domain complex with a small molecule
Keywords keywordsLink module, Cell surface receptor, Hyaluronan, non-glycosylated, Cell surface, Cell adhesion-inhibitor complex; Cell adhesion/inhibitor
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier15.92
Radius of gyration Rg (electron density) rg_electron14.78
Forward intensity I(0) i06435530.00
Molecular weight molecular_weight17378.0 kDa
Excluded volume excluded_volume21273 ų
Envelope volume envelope_volume23703 ų
Hydration-shell volume shell_volume13553 ų
Envelope diameter envelope_diameter51.2
Shell Rg shell_rg20.62
Envelope Rg envelope_rg15.08
Shape Rg shape_rg14.76
Total Rg total_rg15.86
Total atoms total_atoms1214
Residues n_residues150
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 dmax52.1
Rg (real space) rg_real15.81
Rg uncertainty (real space) rg_real_error0.25
I(0) (real space) i0_real6.4360e+06
I(0) uncertainty (real space) i0_real_error6.7400e+04
Rg (reciprocal space) rg_reciprocal15.82
I(0) (reciprocal space) i0_reciprocal6436000.0000
Solution quality estimate total_estimate0.8765
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.4
Skewness Skewness skewness0.162
Kurtosis Kurtosis kurtosis-0.341
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1384000.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.801; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.988

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd4np2a1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.169 — C-type lectin-like
Superfamily Superfamily superfamilyd.169.1 — C-type lectin-like
Family Family familyd.169.1.4 — Link domain
Domain ID domain_idd4np2a2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

8. Citations (1)

9. Files and Curves (10)