2pab

STRUCTURE OF PREALBUMIN, SECONDARY, TERTIARY AND QUATERNARY INTERACTIONS DETERMINED BY FOURIER REFINEMENT AT 1.8 ANGSTROMS

Method: X-RAY DIFFRACTION Dmax: 58.7 Å Quality: REASONABLE

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

TRANSTHYRETIN PRECURSOR

Homo sapiens

UniProt P02766

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–127 Chain B; UniProt 1–127 Not recorded No other associated polymer X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 1.80 Å
2 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 1–127 Chain B; UniProt 1–127 Not recorded No other associated polymer X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 1.80 Å

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.

460 other PDB entries and 500 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name TTHY_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–127; UniProt 1–127 Author chain B; PDBConstruct 1–127; UniProt 1–127

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 2pab

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2pab
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2pab
Deposition date deposition_date1977-09-16
Structure title titleSTRUCTURE OF PREALBUMIN, SECONDARY, TERTIARY AND QUATERNARY INTERACTIONS DETERMINED BY FOURIER REFINEMENT AT 1.8 ANGSTROMS
Keywords keywordsTRANSPORT (THYROXINE, RETINOL) IN SERUM; TRANSPORT (THYROXINE,RETINOL) IN SERUM
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier18.78
Radius of gyration Rg (electron density) rg_electron17.42
Forward intensity I(0) i010629400.00
Molecular weight molecular_weight24646.0 kDa
Excluded volume excluded_volume30990 ų
Envelope volume envelope_volume36365 ų
Hydration-shell volume shell_volume17443 ų
Envelope diameter envelope_diameter60.3
Shell Rg shell_rg23.50
Envelope Rg envelope_rg17.62
Shape Rg shape_rg17.39
Total Rg total_rg18.52
Total atoms total_atoms1744
Residues n_residues228
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 dmax58.7
Rg (real space) rg_real18.66
Rg uncertainty (real space) rg_real_error0.27
I(0) (real space) i0_real1.0630e+07
I(0) uncertainty (real space) i0_real_error1.2660e+05
Rg (reciprocal space) rg_reciprocal18.68
I(0) (reciprocal space) i0_reciprocal10630000.0000
Solution quality estimate total_estimate0.7393
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary57.9
Skewness Skewness skewness0.113
Kurtosis Kurtosis kurtosis-0.487
Angular range angular_range— – 0.4250 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2803000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.900; Stabil: 1.000; Sysdev: 0.313; Positv: 1.000; Valcen: 0.989; Smooth: 0.981

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2paba_
Class classb — All beta proteins
Fold Fold foldb.3 — Prealbumin-like
Superfamily Superfamily superfamilyb.3.4 — Transthyretin (synonym: prealbumin)
Family Family familyb.3.4.1 — Transthyretin (synonym: prealbumin)
Domain ID domain_idd2pabb_
Class classb — All beta proteins
Fold Fold foldb.3 — Prealbumin-like
Superfamily Superfamily superfamilyb.3.4 — Transthyretin (synonym: prealbumin)
Family Family familyb.3.4.1 — Transthyretin (synonym: prealbumin)

CATH v4.4 (2 domains)

Domain ID domain_id2pabA00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily180 — Transthyretin/hydroxyisourate hydrolase domain
Domain ID domain_id2pabB00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily180 — Transthyretin/hydroxyisourate hydrolase domain

8. Citations (6)

9. Files and Curves (10)