SAXSdb — 1kc2

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

Src Tyrosine kinase

Rous sarcoma virus

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 145–247	Fragment：SH2 domain Mutation：D190A, D192A, K200A	PQpYEEIPI peptide × 1 CO COBALT (II) ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions	Resolution 2.10 Å R-free 0.267

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 1KC2	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1BKL SELF-ASSOCIATED APO SRC SH2 DOMAIN Deposited 1997-05-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 145–249（105 aa） Fragment：SH2 DOMAIN	Mutation：INS(GS) AT N-TERMINUS, INS(EFIVTD) AT C-TERMINUS, BYPRODUCT OF CLONING	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.6；2M AMMONIUM SULFATE PH 6.6 , 25 MG/ML SRC SH2, SITTING DROPS, vapor diffusion - sitting drop	Resolution 2.10 Å R-free 0.304
1BKM COCRYSTAL STRUCTURE OF D-AMINO ACID SUBSTITUTED PHOSPHOPEPTIDE COMPLEX Deposited 1997-05-02	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 145–249（105 aa） Fragment：DOMAIN	Mutation：INS(G0,S1), INS(EFIVTD) AT C-TERMINUS	1C5 [[O-PHOSPHONO-N-ACETYL-TYROSINYL]-GLUTAMYL-3[CYCLOHEXYLMETHYL]ALANINYL]-AMINE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；5% PEG 6K, 0.1M TRIS, PH 8, SITTING DROP EXPERIMENT, PROTEIN 50 MG/ML, INHIBITOR 4 MG/ML, 4:4:2 RATIO (WELL:PROT:INHIB), pH 8.0, vapor diffusion - sitting drop	Resolution 2.00 Å R-free 0.275
1IS0 Crystal Structure of a Complex of the Src SH2 Domain with Conformationally Constrained Peptide Inhibitor Deposited 2001-11-02	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 144–249（106 aa） Fragment：SH2 domain	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；295 K；53% MPD, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 1.90 Å R-free 0.272
1IS0 Crystal Structure of a Complex of the Src SH2 Domain with Conformationally Constrained Peptide Inhibitor Deposited 2001-11-02	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 144–249（106 aa） Fragment：SH2 domain	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；295 K；53% MPD, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 1.90 Å R-free 0.272
1NZL Crystal Structure of Src SH2 domain bound to doubly phosphorylated peptide PQpYEpYIPI Deposited 2003-02-18	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 145–247（103 aa） Fragment：SH2 domain	Not recorded	CL CHLORIDE ION × 2 PG4 TETRAETHYLENE GLYCOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；296 K；PEG 4000,magnesium chloride, hepes, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 1.90 Å R-free 0.265
1NZL Crystal Structure of Src SH2 domain bound to doubly phosphorylated peptide PQpYEpYIPI Deposited 2003-02-18	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 145–247（103 aa） Fragment：SH2 domain	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；296 K；PEG 4000,magnesium chloride, hepes, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 1.90 Å R-free 0.265
1NZV Crystal Structure of Src SH2 domain bound to doubly phosphorylated peptide PQpYIpYVPA Deposited 2003-02-19	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 145–247（103 aa） Fragment：SH2 domain	Not recorded	CL CHLORIDE ION × 2 PG4 TETRAETHYLENE GLYCOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；296 K；PEG 4000, magnesium chloride,Hepes, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 2.10 Å R-free 0.271
1NZV Crystal Structure of Src SH2 domain bound to doubly phosphorylated peptide PQpYIpYVPA Deposited 2003-02-19	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 145–247（103 aa） Fragment：SH2 domain	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；296 K；PEG 4000, magnesium chloride,Hepes, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 296K	Resolution 2.10 Å R-free 0.271
1SHA CRYSTAL STRUCTURE OF THE PHOSPHOTYROSINE RECOGNITION DOMAIN SH2 OF V-SRC COMPLEXED WITH TYROSINE-PHOSPHORYLATED PEPTIDES Deposited 1992-08-18	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 143–246（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.50 Å
1SHB CRYSTAL STRUCTURE OF THE PHOSPHOTYROSINE RECOGNITION DOMAIN SH2 OF V-SRC COMPLEXED WITH TYROSINE-PHOSPHORYLATED PEPTIDES Deposited 1992-08-18	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 143–246（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1SKJ COCRYSTAL STRUCTURE OF UREA-SUBSTITUTED PHOSPHOPEPTIDE COMPLEX Deposited 1997-09-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 142–252（111 aa） Fragment：SH2 DOMAIN	Mutation：N-TERMINAL INS(GS) AND C-TERMINAL INS(EFIVTD)	UR2 4-[3-CARBOXYMETHYL-3-(4-PHOSPHONOOXY-BENZYL)-UREIDO]-4-[(3-CYCLOHEXYL-PROPYL)-METHYL-CARBAMOYL]BUTYRIC ACID × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；20% PEG 6K, 0.1M ODIUM CACODYLATE PH 6, HANGING DROP EXPERIMENT, PROTEIN 29 MG/ ML, INHIBITOR 4 MG/ML, 4:4:2 RATIO (WELL:PROT:INHIB), pH 6.0, vapor diffusion - hanging drop	Resolution 2.00 Å R-free 0.275
1SPR BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS Deposited 1993-03-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 144–247（104 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.50 Å
1SPR BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS Deposited 1993-03-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 144–247（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.50 Å
1SPR BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS Deposited 1993-03-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 144–247（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.50 Å
1SPR BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS Deposited 1993-03-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain D 144–247（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.50 Å
1SPS BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS Deposited 1993-03-05	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 144–247（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.70 Å
1SPS BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS Deposited 1993-03-05	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 144–247（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.70 Å
1SPS BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS Deposited 1993-03-05	Different construct Different mutation/modification Different ligand/ion Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 144–247（104 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.70 Å

10 other PDB entries and 18 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	SRC_RSVSA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–103； UniProt 145–247

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	1kc2
Deposition date deposition_date	2001-11-07
Structure title title	structure of the triple (Lys(beta)D3Ala, Asp(beta)C8Ala, AspCD2Ala) mutant of the Src SH2 domain bound to the PQpYEEIPI peptide
Keywords keywords	SH2 domain, phosphotyrosine, TRANSFERASE; TRANSFERASE
Experimental Method method	X-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier	14.23 Å
Radius of gyration Rg (electron density) rg_electron	12.72 Å
Forward intensity I(0) i0	3060860.00
Molecular weight molecular_weight	11886.0 kDa
Excluded volume excluded_volume	14733 Å³
Envelope volume envelope_volume	16299 Å³
Hydration-shell volume shell_volume	10891 Å³
Envelope diameter envelope_diameter	44.2 Å
Shell Rg shell_rg	18.50 Å
Envelope Rg envelope_rg	13.08 Å
Shape Rg shape_rg	12.67 Å
Total Rg total_rg	14.12 Å
Total atoms total_atoms	834
Residues n_residues	103
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	46.4 Å
Rg (real space) rg_real	14.12 Å
Rg uncertainty (real space) rg_real_error	0.28 Å
I(0) (real space) i0_real	3.0610e+06
I(0) uncertainty (real space) i0_real_error	3.3970e+04
Rg (reciprocal space) rg_reciprocal	14.13 Å
I(0) (reciprocal space) i0_reciprocal	3061000.0000
Solution quality estimate total_estimate	0.8737
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	19.4 Å
Skewness Skewness skewness	0.113
Kurtosis Kurtosis kurtosis	-0.315
Angular range angular_range	— – 0.5000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	711300.0000
Real-space data points n_real_points	80
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.790; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.987

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	Src Tyrosine kinase
Molecular weight formula_weight	11696.2 kDa
EC 编号 ec_number	2.7.1.112
Mutation mutation	D190A, D192A, K200A
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	898

AEEWYFGKITRRESERLLLNPENPRGTFLVRESETTKGAYCLSVSAFANAKGLNVAHYKIRKLDSGGFYITSRTQFSSLQQLVAYYSKHADGLCHRLTNVCPT

来源 Source

来源生物 organism	Rous sarcoma virus
NCBI Class编号 ncbi_taxonomy_id	11886
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	PQpYEEIPI peptide
Molecular weight formula_weight	1068.1 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

PQYEEIPI

Entity 3 Entity 3 non-polymer

Description description	COBALT (II) ION
Molecular weight formula_weight	58.9 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	64

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7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1kc2a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.93 — SH2-like
Superfamily Superfamily superfamily	d.93.1 — SH2 domain
Family Family family	d.93.1.1 — SH2 domain

CATH v4.4 (1 domains)

Domain ID domain_id	1kc2A00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	505 — SHC Adaptor Protein
Homologous superfamily homologous superfamily	10 — SH2 domain

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8. Citations (1)

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Unit-cell length a length_a	62.447 Å
Unit-cell length b length_b	62.447 Å
Unit-cell length c length_c	133.680 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	16

Space group space_group	I 4 2 2
Space-group number int_tables_number	97
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	28.290 Å
R factor r_factor	0.2290
R_work r_work	0.2290
R_free r_free	0.2670

fit	/app/data/saxs_computation/kc/1kc2/1kc2.fit
pddf	/app/data/pr_computation/kc/1kc2/1kc2.pr.out
profile	/app/data/saxs_computation/kc/1kc2/1kc2.dat

structure of the triple (Lys(beta)D3Ala, Asp(beta)C8Ala, AspCD2Ala) mutant of the Src SH2 domain bound to the PQpYEEIPI peptide

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

Src Tyrosine kinase

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

Refinement Refinement

6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

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)