2tct

THE COMPLEX FORMED BETWEEN TET REPRESSOR AND TETRACYCLINE-MG2+ REVEALS MECHANISM OF ANTIBIOTIC RESISTANCE

Method: X-RAY DIFFRACTION Dmax: 72.0 Å Quality: GOOD

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

TETRACYCLINE REPRESSOR

Escherichia coli

UniProt P0ACT4

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 1–207 Not recorded MG MAGNESIUM ION × 2 CTC 7-CHLOROTETRACYCLINE × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.10 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.

45 other PDB entries and 51 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name TETR4_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–207; UniProt 1–207

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 2tct

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id2tct
Deposition date deposition_date1995-03-02
Structure title titleTHE COMPLEX FORMED BETWEEN TET REPRESSOR AND TETRACYCLINE-MG2+ REVEALS MECHANISM OF ANTIBIOTIC RESISTANCE
Keywords keywordsTRANSCRIPTION REGULATION; TRANSCRIPTION REGULATION
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.52
Radius of gyration Rg (electron density) rg_electron20.02
Forward intensity I(0) i09562440.00
Molecular weight molecular_weight22789.0 kDa
Excluded volume excluded_volume28523 ų
Envelope volume envelope_volume35397 ų
Hydration-shell volume shell_volume15920 ų
Envelope diameter envelope_diameter74.6
Shell Rg shell_rg24.98
Envelope Rg envelope_rg20.67
Shape Rg shape_rg20.00
Total Rg total_rg20.85
Total atoms total_atoms1607
Residues n_residues198
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 dmax72.0
Rg (real space) rg_real20.60
Rg uncertainty (real space) rg_real_error0.63
I(0) (real space) i0_real9.5620e+06
I(0) uncertainty (real space) i0_real_error1.3130e+05
Rg (reciprocal space) rg_reciprocal20.59
I(0) (reciprocal space) i0_reciprocal9562000.0000
Solution quality estimate total_estimate0.7721
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary19.8
Skewness Skewness skewness0.441
Kurtosis Kurtosis kurtosis-0.267
Angular range angular_range— – 0.3850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2479000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.725; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.858; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2tcta1
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.1 — Homeodomain-like
Family Family familya.4.1.9 — Tetracyclin repressor-like, N-terminal domain
Domain ID domain_idd2tcta2
Class classa — All alpha proteins
Fold Fold folda.121 — Tetracyclin repressor-like, C-terminal domain
Superfamily Superfamily superfamilya.121.1 — Tetracyclin repressor-like, C-terminal domain
Family Family familya.121.1.1 — Tetracyclin repressor-like, C-terminal domain

CATH v4.4 (2 domains)

Domain ID domain_id2tctA01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily60 — Homeodomain-like
Domain ID domain_id2tctA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology357 — Tetracycline Repressor; domain 2
Homologous superfamily homologous superfamily10 — Tetracycline Repressor, domain 2

8. Citations (2)

9. Files and Curves (10)