1brs

PROTEIN-PROTEIN RECOGNITION: CRYSTAL STRUCTURAL ANALYSIS OF A BARNASE-BARSTAR COMPLEX AT 2.0-A RESOLUTION

Method: X-RAY DIFFRACTION Dmax: 95.9 Å Quality: REASONABLE

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

BARNASE

Bacillus amyloliquefaciens

UniProt P00648

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 × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 48–157 Not recorded BARSTAR × 1 (P11540) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.00 Å
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 48–157 Not recorded BARSTAR × 1 (P11540) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.00 Å
3 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 48–157 Not recorded BARSTAR × 1 (P11540) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.00 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.

51 other PDB entries and 135 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RNBR_BACAM
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–110; UniProt 48–157 Author chain B; PDBConstruct 1–110; UniProt 48–157 Author chain C; PDBConstruct 1–110; UniProt 48–157

BARSTAR

Bacillus amyloliquefaciens

UniProt P11540

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 × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 1–89 Not recorded BARNASE × 1 (P00648) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.00 Å
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain E; UniProt 1–89 Not recorded BARNASE × 1 (P00648) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.00 Å
3 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain F; UniProt 1–89 Not recorded BARNASE × 1 (P00648) X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.00 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.

20 other PDB entries and 48 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BARS_BACAM
Isoform
PDB entities 2
Chains and sequence ranges Author chain D; PDBConstruct 1–89; UniProt 1–89 Author chain E; PDBConstruct 1–89; UniProt 1–89 Author chain F; PDBConstruct 1–89; UniProt 1–89

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 1brs

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1brs
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id1brs
Deposition date deposition_date1994-03-11
Structure title titlePROTEIN-PROTEIN RECOGNITION: CRYSTAL STRUCTURAL ANALYSIS OF A BARNASE-BARSTAR COMPLEX AT 2.0-A RESOLUTION
Keywords keywordsENDONUCLEASE; ENDONUCLEASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier30.93
Radius of gyration Rg (electron density) rg_electron30.56
Forward intensity I(0) i066387100.00
Molecular weight molecular_weight65396.0 kDa
Excluded volume excluded_volume82210 ų
Envelope volume envelope_volume103300 ų
Hydration-shell volume shell_volume29308 ų
Envelope diameter envelope_diameter101.3
Shell Rg shell_rg36.13
Envelope Rg envelope_rg30.31
Shape Rg shape_rg30.51
Total Rg total_rg31.25
Total atoms total_atoms4638
Residues n_residues588
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 dmax95.9
Rg (real space) rg_real30.92
Rg uncertainty (real space) rg_real_error0.79
I(0) (real space) i0_real6.6390e+07
I(0) uncertainty (real space) i0_real_error1.0320e+06
Rg (reciprocal space) rg_reciprocal30.93
I(0) (reciprocal space) i0_reciprocal66390000.0000
Solution quality estimate total_estimate0.6882
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary94.0
Skewness Skewness skewness0.225
Kurtosis Kurtosis kurtosis-0.584
Angular range angular_range— – 0.2550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha12410000.0000
Real-space data points n_real_points52
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.967; Stabil: 1.000; Sysdev: 0.115; Positv: 1.000; Valcen: 0.961; Smooth: 0.736

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd1brsa_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.1 — Microbial ribonucleases
Superfamily Superfamily superfamilyd.1.1 — Microbial ribonucleases
Family Family familyd.1.1.2 — Bacterial ribonucleases
Domain ID domain_idd1brsb_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.1 — Microbial ribonucleases
Superfamily Superfamily superfamilyd.1.1 — Microbial ribonucleases
Family Family familyd.1.1.2 — Bacterial ribonucleases
Domain ID domain_idd1brsc_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.1 — Microbial ribonucleases
Superfamily Superfamily superfamilyd.1.1 — Microbial ribonucleases
Family Family familyd.1.1.2 — Bacterial ribonucleases
Domain ID domain_idd1brsd_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.9 — Barstar-like
Superfamily Superfamily superfamilyc.9.1 — Barstar-related
Family Family familyc.9.1.1 — Barstar-related
Domain ID domain_idd1brse_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.9 — Barstar-like
Superfamily Superfamily superfamilyc.9.1 — Barstar-related
Family Family familyc.9.1.1 — Barstar-related
Domain ID domain_idd1brsf_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.9 — Barstar-like
Superfamily Superfamily superfamilyc.9.1 — Barstar-related
Family Family familyc.9.1.1 — Barstar-related

CATH v4.4 (6 domains)

Domain ID domain_id1brsA00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily30 — Microbial ribonucleases
Domain ID domain_id1brsB00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily30 — Microbial ribonucleases
Domain ID domain_id1brsC00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily30 — Microbial ribonucleases
Domain ID domain_id1brsD00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology370 — Barnase; Chain D
Homologous superfamily homologous superfamily10 — Barstar-like
Domain ID domain_id1brsE00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology370 — Barnase; Chain D
Homologous superfamily homologous superfamily10 — Barstar-like
Domain ID domain_id1brsF00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology370 — Barnase; Chain D
Homologous superfamily homologous superfamily10 — Barstar-like

8. Citations (5)

9. Files and Curves (10)