1tco

TERNARY COMPLEX OF A CALCINEURIN A FRAGMENT, CALCINEURIN B, FKBP12 AND THE IMMUNOSUPPRESSANT DRUG FK506 (TACROLIMUS)

Method: X-RAY DIFFRACTION Dmax: 105.1 Å Quality: GOOD

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

SERINE/THREONINE PHOSPHATASE B2

Bos taurus

UniProt P48452

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 A; UniProt 18–392 Fragment:CHAIN A IS THE CATALYTIC SUBUNIT, RESIDUES 18 -392. CHAIN B IS THE REGULATORY SUBUNIT, RESIDUES 1 - 169 SERINE/THREONINE PHOSPHATASE B2 × 1 (P63099) FK506-BINDING PROTEIN × 1 (P62942) ZN ZINC ION × 1 FE FE (III) ION × 1 PO4 PHOSPHATE ION × 1 CA CALCIUM ION × 4 MYR MYRISTIC ACID × 1 FK5 8-DEETHYL-8-[BUT-3-ENYL]-ASCOMYCIN × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.50 Å R-free 0.282

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.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence
UniProt name P2BA_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–375; UniProt 18–392

SERINE/THREONINE PHOSPHATASE B2

Bos taurus

UniProt P63099

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 B; UniProt 1–169 Fragment:CHAIN A IS THE CATALYTIC SUBUNIT, RESIDUES 18 -392. CHAIN B IS THE REGULATORY SUBUNIT, RESIDUES 1 - 169 SERINE/THREONINE PHOSPHATASE B2 × 1 (P48452) FK506-BINDING PROTEIN × 1 (P62942) ZN ZINC ION × 1 FE FE (III) ION × 1 PO4 PHOSPHATE ION × 1 CA CALCIUM ION × 4 MYR MYRISTIC ACID × 1 FK5 8-DEETHYL-8-[BUT-3-ENYL]-ASCOMYCIN × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.50 Å R-free 0.282

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.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence
UniProt name CANB1_BOVIN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–169; UniProt 1–169

FK506-BINDING PROTEIN

Bos taurus

UniProt P62942

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 1–107 Not recorded SERINE/THREONINE PHOSPHATASE B2 × 1 (P48452) SERINE/THREONINE PHOSPHATASE B2 × 1 (P63099) ZN ZINC ION × 1 FE FE (III) ION × 1 PO4 PHOSPHATE ION × 1 CA CALCIUM ION × 4 MYR MYRISTIC ACID × 1 FK5 8-DEETHYL-8-[BUT-3-ENYL]-ASCOMYCIN × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.50 Å R-free 0.282

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.

110 other PDB entries and 171 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FKB1A_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–107; UniProt 1–107

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 1tco

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1tco
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1tco
Deposition date deposition_date1996-08-21
Structure title titleTERNARY COMPLEX OF A CALCINEURIN A FRAGMENT, CALCINEURIN B, FKBP12 AND THE IMMUNOSUPPRESSANT DRUG FK506 (TACROLIMUS)
Keywords keywordsCOMPLEX (HYDROLASE-ISOMERASE), IMMUNOSUPPRESSANT, COMPLEX (HYDROLASE-ISOMERASE) complex; COMPLEX (HYDROLASE/ISOMERASE)
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.71
Radius of gyration Rg (electron density) rg_electron29.21
Forward intensity I(0) i082508900.00
Molecular weight molecular_weight72931.0 kDa
Excluded volume excluded_volume91647 ų
Envelope volume envelope_volume108030 ų
Hydration-shell volume shell_volume32136 ų
Envelope diameter envelope_diameter112.1
Shell Rg shell_rg34.84
Envelope Rg envelope_rg29.48
Shape Rg shape_rg29.18
Total Rg total_rg29.82
Total atoms total_atoms5117
Residues n_residues628
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 dmax105.1
Rg (real space) rg_real29.89
Rg uncertainty (real space) rg_real_error0.88
I(0) (real space) i0_real8.2510e+07
I(0) uncertainty (real space) i0_real_error1.2870e+06
Rg (reciprocal space) rg_reciprocal29.82
I(0) (reciprocal space) i0_reciprocal82500000.0000
Solution quality estimate total_estimate0.8453
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary29.7
Skewness Skewness skewness0.555
Kurtosis Kurtosis kurtosis-0.093
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha22250000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.716; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.862; Smooth: 0.974

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (10)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd1tcoa_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.159 — Metallo-dependent phosphatases
Superfamily Superfamily superfamilyd.159.1 — Metallo-dependent phosphatases
Family Family familyd.159.1.3 — Protein serine/threonine phosphatase
Domain ID domain_idd1tcob_
Class classa — All alpha proteins
Fold Fold folda.39 — EF Hand-like
Superfamily Superfamily superfamilya.39.1 — EF-hand
Family Family familya.39.1.5 — Calmodulin-like
Domain ID domain_idd1tcoc_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.26 — FKBP-like
Superfamily Superfamily superfamilyd.26.1 — FKBP-like
Family Family familyd.26.1.1 — FKBP immunophilin/proline isomerase

CATH v4.4 (3 domains)

Domain ID domain_id1tcoA00
Class class3 — Alpha Beta
Architecture architecture60 — 4-Layer Sandwich
Topology topology21 — Purple Acid Phosphatase; chain A, domain 2
Homologous superfamily homologous superfamily10 — Metallo-dependent phosphatases
Domain ID domain_id1tcoB00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1tcoC00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology50 — Chitinase A; domain 3
Homologous superfamily homologous superfamily40

8. Citations (1)

9. Files and Curves (10)