1c6s

THE SOLUTION STRUCTURE OF CYTOCHROME C6 FROM THE THERMOPHILIC CYANOBACTERIUM SYNECHOCOCCUS ELONGATUS, NMR, 20 STRUCTURES

Method: SOLUTION NMR D_max: 35.3 Å Quality: GOOD

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

CYTOCHROME C6

OrganismNot specified

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 1–87	Not recorded	HEC HEME C × 1	SOLUTION NMR NMR measurement conditions：pH 6.5；298 K	Resolution not provided

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	CYC6_SYNEN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–87； UniProt 1–87

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

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1c6s
Deposition date deposition_date	1997-03-31
Structure title title	THE SOLUTION STRUCTURE OF CYTOCHROME C6 FROM THE THERMOPHILIC CYANOBACTERIUM SYNECHOCOCCUS ELONGATUS, NMR, 20 STRUCTURES
Keywords keywords	CYTOCHROME C6, ELECTRON TRANSPORT, PHOTOSYNTHESIS, SYNECHOCOCCUS ELONGATUS; ELECTRON TRANSPORT
Experimental Method method	SOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier	11.39 Å
Radius of gyration Rg (electron density) rg_electron	11.11 Å
Forward intensity I(0) i0	555455000.00
Molecular weight molecular_weight	195900.0 kDa
Excluded volume excluded_volume	242760 Å³
Envelope volume envelope_volume	16358 Å³
Hydration-shell volume shell_volume	11066 Å³
Envelope diameter envelope_diameter	38.5 Å
Shell Rg shell_rg	18.42 Å
Envelope Rg envelope_rg	12.68 Å
Shape Rg shape_rg	11.09 Å
Total Rg total_rg	11.31 Å
Total atoms total_atoms	26740
Residues n_residues	1740
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	35.3 Å
Rg (real space) rg_real	11.29 Å
Rg uncertainty (real space) rg_real_error	0.18 Å
I(0) (real space) i0_real	5.5550e+08
I(0) uncertainty (real space) i0_real_error	4.9820e+06
Rg (reciprocal space) rg_reciprocal	11.29 Å
I(0) (reciprocal space) i0_reciprocal	555500000.0000
Solution quality estimate total_estimate	0.8842
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	15.7 Å
Skewness Skewness skewness	-0.004
Kurtosis Kurtosis kurtosis	-0.372
Angular range angular_range	— – 0.5000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	219200.0000
Real-space data points n_real_points	80
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.844; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.981; Smooth: 0.979

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (2)

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7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1c6sa_
Class class	a — All alpha proteins
Fold Fold fold	a.3 — Cytochrome c
Superfamily Superfamily superfamily	a.3.1 — Cytochrome c
Family Family family	a.3.1.1 — monodomain cytochrome c

CATH v4.4 (1 domains)

Domain ID domain_id	1c6sA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	760 — Cytochrome Bc1 Complex; Chain D, domain 2
Homologous superfamily homologous superfamily	10 — Cytochrome c-like domain

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8. Citations (2)

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	1

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Description description	CYTOCHROME C6
Molecular weight formula_weight	9187.4 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	26740

Description description	HEME C
Molecular weight formula_weight	618.5 kDa
Source method src_method	syn
Copy count entity_count	1

THE SOLUTION STRUCTURE OF CYTOCHROME C6 FROM THE THERMOPHILIC CYANOBACTERIUM SYNECHOCOCCUS ELONGATUS, NMR, 20 STRUCTURES

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

CYTOCHROME C6

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

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

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

6. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

8. Citations (2)

9. Files and Curves (10)

Files (7)

Curves (3)

fit	/app/data/saxs_computation/c6/1c6s/1c6s.fit
pddf	/app/data/pr_computation/c6/1c6s/1c6s.pr.out
profile	/app/data/saxs_computation/c6/1c6s/1c6s.dat