SAXSdb — 1npq

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

Troponin C

Gallus gallus

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 1–90	Fragment：TnC, residues 1-90 Mutation：E56C, E63C	Troponin I × 1 （P02643） CA CALCIUM ION × 2	SOLUTION NMR NMR measurement conditions：pH 6.5；303 K；Ionic strength (raw mmCIF value) 320 mM KCl；Pressure ambiant NMR sample composition：320 mM KCl, 10 mM imidazole, 1.3% NaN3, pH 6.5, ~1mM sNTnC.2Ca2+.TnI115-131.BR56-63 \| 90% H2O/10% D2O	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.

Other PDB	Difference from Current Entry 1NPQ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1AVS X-RAY CRYSTALLOGRAPHIC STUDY OF CALCIUM-SATURATED N-TERMINAL DOMAIN OF TROPONIN C Deposited 1997-09-19	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–90（90 aa） Fragment：N-TERMINAL DOMAIN, RESIDUES 1 - 90	Not recorded	CA CALCIUM ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；72 % AMMONIUM SULFATE 100 MM TRIS 2 % MPD, 5 MM CALCIUM CHLORIDE PH 7.5	Resolution 1.75 Å R-free 0.250
1AVS X-RAY CRYSTALLOGRAPHIC STUDY OF CALCIUM-SATURATED N-TERMINAL DOMAIN OF TROPONIN C Deposited 1997-09-19	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 1–90（90 aa） Fragment：N-TERMINAL DOMAIN, RESIDUES 1 - 90	Not recorded	CA CALCIUM ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；72 % AMMONIUM SULFATE 100 MM TRIS 2 % MPD, 5 MM CALCIUM CHLORIDE PH 7.5	Resolution 1.75 Å R-free 0.250
1BLQ STRUCTURE AND INTERACTION SITE OF THE REGULATORY DOMAIN OF TROPONIN-C WHEN COMPLEXED WITH THE 96-148 REGION OF TROPONIN-I, NMR, 29 STRUCTURES Deposited 1998-07-19	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–90（90 aa） Fragment：REGULATORY	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.85；303 K；Ionic strength (raw mmCIF value) 100 mM KCL；Pressure 1 NMR sample composition H2O	Resolution not provided
1CTA DETERMINATION OF THE SOLUTION STRUCTURE OF A SYNTHETIC TWO-SITE CALCIUM-BINDING HOMODIMERIC PROTEIN DOMAIN BY NMR SPECTROSCOPY Deposited 1992-11-12	Different construct Different mutation/modification Different oligomeric state Different experimental conditions	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 93–126（34 aa） Chain B 93–126（34 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	CA CALCIUM ION × 2	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1CTD DETERMINATION OF THE SOLUTION STRUCTURE OF A SYNTHETIC TWO-SITE CALCIUM-BINDING HOMODIMERIC PROTEIN DOMAIN BY NMR SPECTROSCOPY Deposited 1992-11-12	Different construct Different mutation/modification Different oligomeric state Different experimental conditions	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 93–126（34 aa） Chain B 93–126（34 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	CA CALCIUM ION × 2	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1JC2 COMPLEX OF THE C-DOMAIN OF TROPONIN C WITH RESIDUES 1-40 OF TROPONIN I Deposited 2001-06-07	Different construct Different mutation/modification Different oligomeric state Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 89–163（75 aa） Fragment：residues 89-163 of GB entry 212778	Not recorded	CA CALCIUM ION × 2	SOLUTION NMR NMR measurement conditions pH 6.8；303 K；Ionic strength (raw mmCIF value) 0.1；Pressure ambiant NMR sample composition ~1.3 mM C-domain of Sqeletal Troponin C, 1.9 mM of TnI peptide (residues 1-40), 100 mM KCl, 10 mM Imidazole, 1 mM DSS \| 90% H2O/10% D2O	Resolution not provided
1NCX TROPONIN C Deposited 1996-06-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–162（162 aa）	Not recorded	CD CADMIUM ION × 2 SO4 SULFATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.80 Å
1NCY TROPONIN-C, COMPLEX WITH MANGANESE Deposited 1996-06-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–162（162 aa）	Not recorded	MN MANGANESE (II) ION × 2 SO4 SULFATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1NCZ TROPONIN C Deposited 1996-06-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–162（162 aa）	Not recorded	TB TERBIUM(III) ION × 2 SO4 SULFATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.80 Å
1PON SITE III-SITE IV TROPONIN C HETERODIMER, NMR Deposited 1996-04-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 93–126（34 aa） Fragment：SITE III AND IV Chain B 129–162（34 aa） Fragment：SITE III AND IV	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	No recorded non-water small molecule	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1SKT SOLUTION STRUCTURE OF APO N-DOMAIN OF TROPONIN C, NMR, 40 STRUCTURES Deposited 1998-04-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–90（90 aa） Fragment：N-DOMAIN, RESIDUES 1-90	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.7；277 K；Ionic strength (raw mmCIF value) 50mM KCL；Pressure 1 NMR sample composition WATER	Resolution not provided
1SMG CALCIUM-BOUND E41A MUTANT OF THE N-DOMAIN OF CHICKEN TROPONIN C, NMR, 40 STRUCTURES Deposited 1997-02-04	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–90（90 aa） Fragment：N-DOMAIN	Mutation：E41A	CA CALCIUM ION × 1	SOLUTION NMR NMR measurement conditions pH 6.7；303.15 K	Resolution not provided
1TNP STRUCTURES OF THE APO AND CALCIUM TROPONIN-C REGULATORY DOMAINS: THE MUSCLE CONTRACTION SWITCH Deposited 1995-07-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–90（90 aa）	Not recorded	No recorded non-water small molecule	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1TNQ STRUCTURES OF THE APO AND CALCIUM TROPONIN-C REGULATORY DOMAINS: THE MUSCLE CONTRACTION SWITCH Deposited 1995-07-07	Different construct Different mutation/modification Different oligomeric state Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–90（90 aa）	Not recorded	CA CALCIUM ION × 2	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1TNW NMR SOLUTION STRUCTURE OF CALCIUM SATURATED SKELETAL MUSCLE TROPONIN C Deposited 1995-08-23	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 2–163（162 aa）	Mutation：T130I	No recorded non-water small molecule	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1TNX NMR SOLUTION STRUCTURE OF CALCIUM SATURATED SKELETAL MUSCLE TROPONIN C Deposited 1995-08-23	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 2–163（162 aa）	Mutation：T130I	No recorded non-water small molecule	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1TOP STRUCTURE OF CHICKEN SKELETAL MUSCLE TROPONIN-C AT 1.78 ANGSTROMS RESOLUTION Deposited 1993-08-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–162（162 aa）	Not recorded	CA CALCIUM ION × 2 SO4 SULFATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.78 Å
1YTZ Crystal structure of skeletal muscle troponin in the Ca2+-activated state Deposited 2005-02-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–162（162 aa）	Not recorded	DR6 ALPHA-[4-(1,1,3,3 - TETRAMETHYLBUTYL)PHENYL]-OMEGA-HYDROXY-POLY(OXY-1,2-ETHANEDIYL) × 3 CA CALCIUM ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；298 K；0.4 M NaH2PO4/1.6 M K2HPO4, 200 mM NaCl, 0.1 M immidazole, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 3.00 Å R-free 0.338
1YTZ Crystal structure of skeletal muscle troponin in the Ca2+-activated state Deposited 2005-02-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain C 1–162（162 aa）	Not recorded	DR6 ALPHA-[4-(1,1,3,3 - TETRAMETHYLBUTYL)PHENYL]-OMEGA-HYDROXY-POLY(OXY-1,2-ETHANEDIYL) × 6 CA CALCIUM ION × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；298 K；0.4 M NaH2PO4/1.6 M K2HPO4, 200 mM NaCl, 0.1 M immidazole, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 3.00 Å R-free 0.338
1YV0 Crystal structure of skeletal muscle troponin in the Ca2+-free state Deposited 2005-02-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 1–162（162 aa）	Not recorded	MG MAGNESIUM ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；1.6 M tri-Sodium Citrate dihydrate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 7.00 Å R-free 0.359
1YV0 Crystal structure of skeletal muscle troponin in the Ca2+-free state Deposited 2005-02-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain C 1–162（162 aa）	Not recorded	MG MAGNESIUM ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；1.6 M tri-Sodium Citrate dihydrate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 7.00 Å R-free 0.359
1ZAC N-DOMAIN OF TROPONIN C FROM CHICKEN SKELETAL MUSCLE, NMR, MINIMIZED AVERAGE STRUCTURE Deposited 1998-04-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–90（90 aa） Fragment：N-DOMAIN, RESIDUES 1-90	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.7；277 K；Ionic strength (raw mmCIF value) 50mM KCL；Pressure 1 NMR sample composition WATER	Resolution not provided
2W49 ISOMETRICALLY CONTRACTING INSECT ASYNCHRONOUS FLIGHT MUSCLE Deposited 2008-11-24	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 36 PDB declaration: 36-meric	Chain 0 5–163（159 aa） Fragment：RESIDUES 5-163 Chain 3 5–163（159 aa） Fragment：RESIDUES 5-163 Chain 6 5–163（159 aa） Fragment：RESIDUES 5-163 Chain 9 5–163（159 aa） Fragment：RESIDUES 5-163	Not recorded	CA CALCIUM ION × 16	ELECTRON MICROSCOPY cryo-EM buffer 20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS；20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS cryo-EM vitrification conditions Cryogen HELIUM；SMASH AGAINST A LIQUID HELIUM COOLED GOLD COATED COPPER MIRROR	Resolution 35.00 Å
2W4U Isometrically contracting insect asynchronous flight muscle quick frozen after a length step Deposited 2008-12-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 36 PDB declaration: 36-meric	Chain 0 5–163（159 aa） Fragment：RESIDUES 5-163 Chain 3 5–163（159 aa） Fragment：RESIDUES 5-163 Chain 6 5–163（159 aa） Fragment：RESIDUES 5-163 Chain 9 5–163（159 aa） Fragment：RESIDUES 5-163	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer 20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS；20 MM MOPS BUFFER, 5 MM NAN3, AND MGCL2, ATP, CACL2, AND EGTA IN VARYING MILLIMOLAR CONCENTRATIONS cryo-EM vitrification conditions Cryogen HELIUM；SMASH AGAINST A LIQUID HELIUM COOLED GOLD COATED COPPER MIRROR	Resolution 35.00 Å
4TNC REFINED STRUCTURE OF CHICKEN SKELETAL MUSCLE TROPONIN C IN THE TWO-CALCIUM STATE AT 2-ANGSTROMS RESOLUTION Deposited 1987-09-28	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 2–162（161 aa）	Not recorded	CA CALCIUM ION × 2	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å

22 other PDB entries and 25 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	TNNC2_CHICK
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–90； UniProt 1–90

Troponin I

OrganismNot specified

UniProt P02643

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 B； UniProt 115–131	Fragment：switch peptide, residues 115-131	Troponin C × 1 （P02588） CA CALCIUM ION × 2	SOLUTION NMR NMR measurement conditions：pH 6.5；303 K；Ionic strength (raw mmCIF value) 320 mM KCl；Pressure ambiant NMR sample composition：320 mM KCl, 10 mM imidazole, 1.3% NaN3, pH 6.5, ~1mM sNTnC.2Ca2+.TnI115-131.BR56-63 \| 90% H2O/10% D2O	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.

Other PDB	Difference from Current Entry 1NPQ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1A2X COMPLEX OF TROPONIN C WITH A 47 RESIDUE (1-47) FRAGMENT OF TROPONIN I Deposited 1998-01-13	Different construct Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 1–47（47 aa） Fragment：RESIDUES 1 - 47	Not recorded	CA CALCIUM ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；289 K；HANGING-DROP VAPOR DIFFUSION METHOD WAS USED AT 289K BY MIXING THE PROTEIN SOLUTION CONTAINING 25-30MG/ML OF THE CI47 COMPLEX WITH A RESERVOIR SOLUTION CONTAINING 1.5M SODIUM CITRATE, 0.1M TRIS-HCL, PH 8.0, 15% TREHALOSE., vapor diffusion - hanging drop	Resolution 2.30 Å R-free 0.325

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	TNNI2_RABIT
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–17； UniProt 115–131

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1npq
Deposition date deposition_date	2003-01-18
Structure title title	structure of a rhodamine-labeled N-domain Troponin C mutant (Ca2+ saturated) in complex with skeletal Troponin I 115-131
Keywords keywords	Troponin C- Troponin I complex, bifunctional rhodamine labeled Toponin C, STRUCTURAL PROTEIN; STRUCTURAL PROTEIN
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	13.67 Å
Radius of gyration Rg (electron density) rg_electron	13.17 Å
Forward intensity I(0) i0	972665000.00
Molecular weight molecular_weight	249470.0 kDa
Excluded volume excluded_volume	305880 Å³
Envelope volume envelope_volume	31084 Å³
Hydration-shell volume shell_volume	15843 Å³
Envelope diameter envelope_diameter	58.3 Å
Shell Rg shell_rg	22.71 Å
Envelope Rg envelope_rg	17.16 Å
Shape Rg shape_rg	13.16 Å
Total Rg total_rg	13.41 Å
Total atoms total_atoms	33936
Residues n_residues	2247
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	50.4 Å
Rg (real space) rg_real	13.59 Å
Rg uncertainty (real space) rg_real_error	0.41 Å
I(0) (real space) i0_real	9.7270e+08
I(0) uncertainty (real space) i0_real_error	1.1430e+07
Rg (reciprocal space) rg_reciprocal	13.60 Å
I(0) (reciprocal space) i0_reciprocal	972700000.0000
Solution quality estimate total_estimate	0.8049
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	18.5 Å
Skewness Skewness skewness	0.176
Kurtosis Kurtosis kurtosis	-0.053
Angular range angular_range	— – 0.5000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	364300.0000
Real-space data points n_real_points	80
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.494; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.979; Smooth: 0.998

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Troponin C
Molecular weight formula_weight	9932.1 kDa
Mutation mutation	E56C, E63C
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	33936

ASMTDQQAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKCELDAIICEVDEDGSGTIDFEEFLVMMVRQMKEDA

来源 Source

来源生物 organism	Gallus gallus
通用名 common_name	chicken
NCBI Class编号 ncbi_taxonomy_id	9031
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Troponin I
Molecular weight formula_weight	1890.3 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

RMSADAMLRALLGSKHK

Entity 3 Entity 3 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	2

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7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1npqa_
Class class	a — All alpha proteins
Fold Fold fold	a.39 — EF Hand-like
Superfamily Superfamily superfamily	a.39.1 — EF-hand
Family Family family	a.39.1.5 — Calmodulin-like

CATH v4.4 (1 domains)

Domain ID domain_id	1npqA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	238 — Recoverin; domain 1
Homologous superfamily homologous superfamily	10 — EF-hand

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8. Citations (1)

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fit	/app/data/saxs_computation/np/1npq/1npq.fit
pddf	/app/data/pr_computation/np/1npq/1npq.pr.out
profile	/app/data/saxs_computation/np/1npq/1npq.dat

structure of a rhodamine-labeled N-domain Troponin C mutant (Ca2+ saturated) in complex with skeletal Troponin I 115-131

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

Troponin C

State in the Current Structure

Other States of the Same Protein in the Database

Troponin I

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

6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)