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1c2r

MOLECULAR STRUCTURE OF CYTOCHROME C2 ISOLATED FROM RHODOBACTER CAPSULATUS DETERMINED AT 2.5 ANGSTROMS RESOLUTION

Method: X-RAY DIFFRACTION Dmax: 72.6 Å Quality: GOOD
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1. Protein Identity and Related Structures Protein Identity & Related Structures

CYTOCHROME C2

Rhodobacter capsulatus

UniProt P00094

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 monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count Chain A； UniProt 22–137 Not recorded HEC HEME C × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.50 Å
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count Chain B； UniProt 22–137 Not recorded HEC HEME C × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.50 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.

Other PDB Difference from Current Entry 1C2R Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
1C2N CYTOCHROME C2, NMR, 20 STRUCTURES Deposited 1998-04-27 Different construct Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 1–137（137 aa）
Not recorded HEC HEME C × 1 SOLUTION NMR
NMR measurement conditions pH 6；303 K；Ionic strength (raw mmCIF value) 45 mM SODIUM PHOSPHATE；Pressure 1
NMR sample composition 90% H2O/10% D2O
Resolution not provided
1VYD Crystal structure of cytochrome C2 mutant G95E Deposited 2004-04-27 Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 22–137（116 aa）
Mutation：YES HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；pH 7.50
Resolution 2.30 Å R-free 0.242
1VYD Crystal structure of cytochrome C2 mutant G95E Deposited 2004-04-27 Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 22–137（116 aa）
Mutation：YES HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；pH 7.50
Resolution 2.30 Å R-free 0.242

2 other PDB entries and 3 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CYC2_RHOCA
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–116； UniProt 22–137 Author chain B； PDBConstruct 1–116； UniProt 22–137

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 1c2r

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1c2r
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1c2r
Deposition date deposition_date1991-03-19
Structure title titleMOLECULAR STRUCTURE OF CYTOCHROME C2 ISOLATED FROM RHODOBACTER CAPSULATUS DETERMINED AT 2.5 ANGSTROMS RESOLUTION
Keywords keywordsELECTRON TRANSPORT PROTEIN (CYTOCHROME); ELECTRON TRANSPORT PROTEIN (CYTOCHROME)
Experimental Method methodX-RAY DIFFRACTION
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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier21.17 Å
Radius of gyration Rg (electron density) rg_electron20.52 Å
Forward intensity I(0) i010895600.00
Molecular weight molecular_weight25775.0 kDa
Excluded volume excluded_volume32681 ų
Envelope volume envelope_volume38985 ų
Hydration-shell volume shell_volume16666 ų
Envelope diameter envelope_diameter73.4 Å
Shell Rg shell_rg26.05 Å
Envelope Rg envelope_rg20.61 Å
Shape Rg shape_rg20.45 Å
Total Rg total_rg21.58 Å
Total atoms total_atoms1814
Residues n_residues232
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 Å−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
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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax72.6 Å
Rg (real space) rg_real21.25 Å
Rg uncertainty (real space) rg_real_error0.76 Å
I(0) (real space) i0_real1.0900e+07
I(0) uncertainty (real space) i0_real_error1.6750e+05
Rg (reciprocal space) rg_reciprocal21.23 Å
I(0) (reciprocal space) i0_reciprocal10900000.0000
Solution quality estimate total_estimate0.7695
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary19.2 Å
Skewness Skewness skewness0.384
Kurtosis Kurtosis kurtosis-0.469
Angular range angular_range— – 0.3750 Å−1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4188000.0000
Real-space data points n_real_points69
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.729; Stabil: 0.997; Sysdev: 1.000; Positv: 1.000; Valcen: 0.821; Smooth: 0.000
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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (3)

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7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1c2ra_
Class classa — All alpha proteins
Fold Fold folda.3 — Cytochrome c
Superfamily Superfamily superfamilya.3.1 — Cytochrome c
Family Family familya.3.1.1 — monodomain cytochrome c
Domain ID domain_idd1c2rb_
Class classa — All alpha proteins
Fold Fold folda.3 — Cytochrome c
Superfamily Superfamily superfamilya.3.1 — Cytochrome c
Family Family familya.3.1.1 — monodomain cytochrome c

CATH v4.4 (2 domains)

Domain ID domain_id1c2rA00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology760 — Cytochrome Bc1 Complex; Chain D, domain 2
Homologous superfamily homologous superfamily10 — Cytochrome c-like domain
Domain ID domain_id1c2rB00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology760 — Cytochrome Bc1 Complex; Chain D, domain 2
Homologous superfamily homologous superfamily10 — Cytochrome c-like domain
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8. Citations (1)

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9. Files and Curves (10)