2gzw

Crystal structure of the E.coli CRP-cAMP complex

Method: X-RAY DIFFRACTION Dmax: 119.5 Å Quality: REASONABLE

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

Catabolite gene activator

Escherichia coli

UniProt P0ACJ8

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 2–210 Chain B; UniProt 2–210 Not recorded CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;298 K;MG ACETATE, AMMONIUM ACETATE, PEG 4000, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.21 Å R-free 0.278
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 2–210 Chain D; UniProt 2–210 Not recorded CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;298 K;MG ACETATE, AMMONIUM ACETATE, PEG 4000, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.21 Å R-free 0.278

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.

39 other PDB entries and 42 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CRP_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–209; UniProt 2–210 Author chain B; PDBConstruct 1–209; UniProt 2–210 Author chain C; PDBConstruct 1–209; UniProt 2–210 Author chain D; PDBConstruct 1–209; UniProt 2–210

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 2gzw

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id2gzw
Deposition date deposition_date2006-05-12
Structure title titleCrystal structure of the E.coli CRP-cAMP complex
Keywords keywords;CRP, CAMP BINDING PROTEIN, TRANSCRIPTION, Structural Genomics, NPPSFA, National Project on Protein Structural and Functional Analyses, RIKEN Structural Genomics/Proteomics Initiative, RSGI ;; TRANSCRIPTION
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier34.68
Radius of gyration Rg (electron density) rg_electron34.39
Forward intensity I(0) i0137149000.00
Molecular weight molecular_weight92651.0 kDa
Excluded volume excluded_volume115750 ų
Envelope volume envelope_volume152190 ų
Hydration-shell volume shell_volume38383 ų
Envelope diameter envelope_diameter126.2
Shell Rg shell_rg39.32
Envelope Rg envelope_rg33.87
Shape Rg shape_rg34.38
Total Rg total_rg34.81
Total atoms total_atoms6493
Residues n_residues799
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 dmax119.5
Rg (real space) rg_real34.85
Rg uncertainty (real space) rg_real_error1.15
I(0) (real space) i0_real1.3710e+08
I(0) uncertainty (real space) i0_real_error2.2960e+06
Rg (reciprocal space) rg_reciprocal34.75
I(0) (reciprocal space) i0_reciprocal137100000.0000
Solution quality estimate total_estimate0.6527
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary36.4
Skewness Skewness skewness0.473
Kurtosis Kurtosis kurtosis-0.299
Angular range angular_range— – 0.2300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha18470000.0000
Real-space data points n_real_points47
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.792; Stabil: 1.000; Sysdev: 0.122; Positv: 1.000; Valcen: 0.935; Smooth: 0.805

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_idd2gzwa1
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.4 — CAP C-terminal domain-like
Domain ID domain_idd2gzwa2
Class classb — All beta proteins
Fold Fold foldb.82 — Double-stranded beta-helix
Superfamily Superfamily superfamilyb.82.3 — cAMP-binding domain-like
Family Family familyb.82.3.2 — cAMP-binding domain
Domain ID domain_idd2gzwb1
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.4 — CAP C-terminal domain-like
Domain ID domain_idd2gzwb2
Class classb — All beta proteins
Fold Fold foldb.82 — Double-stranded beta-helix
Superfamily Superfamily superfamilyb.82.3 — cAMP-binding domain-like
Family Family familyb.82.3.2 — cAMP-binding domain
Domain ID domain_idd2gzwc1
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.4 — CAP C-terminal domain-like
Domain ID domain_idd2gzwc2
Class classb — All beta proteins
Fold Fold foldb.82 — Double-stranded beta-helix
Superfamily Superfamily superfamilyb.82.3 — cAMP-binding domain-like
Family Family familyb.82.3.2 — cAMP-binding domain
Domain ID domain_idd2gzwd1
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.4 — CAP C-terminal domain-like
Domain ID domain_idd2gzwd2
Class classb — All beta proteins
Fold Fold foldb.82 — Double-stranded beta-helix
Superfamily Superfamily superfamilyb.82.3 — cAMP-binding domain-like
Family Family familyb.82.3.2 — cAMP-binding domain

CATH v4.4 (8 domains)

Domain ID domain_id2gzwA01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily10 — Jelly Rolls
Domain ID domain_id2gzwA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id2gzwB01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily10 — Jelly Rolls
Domain ID domain_id2gzwB02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id2gzwC01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily10 — Jelly Rolls
Domain ID domain_id2gzwC02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id2gzwD01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily10 — Jelly Rolls
Domain ID domain_id2gzwD02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain

8. Citations (2)

9. Files and Curves (10)