SAXSdb — 6gqm

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

Mast/stem cell growth factor receptor Kit

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	~{N}-[4-[[5-fluoranyl-7-(2-methoxyethoxy)quinazolin-4-yl]amino]phenyl]-2-(4-propan-2-yl-1,2,3-triazol-1-yl)ethanamide × 1 CHLORIDE ION × 2 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	~{N}-[4-[[5-fluoranyl-7-(2-methoxyethoxy)quinazolin-4-yl]amino]phenyl]-2-(4-propan-2-yl-1,2,3-triazol-1-yl)ethanamide × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	KIT_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 5–328； UniProt 551–934 Author chain B； PDBConstruct 5–328； UniProt 551–934

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	6gqm
Deposition date deposition_date	2018-06-07
Structure title title	Crystal structure of human c-KIT kinase domain in complex with a small molecule inhibitor, AZD3229
Keywords keywords	receptor tyrosine kinase, inhibitor, oncology, gastrointestinal stromal tumour, structure-based drug design, SIGNALING PROTEIN; SIGNALING PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

6gqm__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

6gqm__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6gqm__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	20.46 Å
Rg (electron density)	19.39 Å
Total Rg	20.36 Å
Atom count	2389
Residues	297
Excluded volume	42747 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6gqm__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`6gqm__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	Mast/stem cell growth factor receptor Kit
Molecular weight formula_weight	37332.6 kDa
EC 编号 ec_number	2.7.10.1
Mutation mutation	I563S, V569S, Y609Q, L631S, M651E, I662H, D768H, R804N, V825D, C844S, L890S, H894Y, L912D, L923D
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4972

GSHMPMYEVQWKVVEESNGNNYSYIDPTQLPYDHKWEFPRNRLSFGKTLGAGAFGKVVEATAQGLIKSDAAMTVAVKMLKPSAHSTEREALMSELKVLSYLGNHENIVNLLGACTHGGPTLVITEYCCYGDLLNFLRRKRDEFVPYKVAPEDLYKDFLTLEHLLSFSYQVAKGMAFLASKNCIHRDLAARNILLTHGNITKICDFGLARDIKNDSNYVDKGNARLPVKWMAPESIFNSVYTFESDVWSYGIFLWELFSLGSSPYPGMPVDSKFYKMIKEGFRMSSPEYAPAEMYDIMKTCWDADPDKRPTFKQIVQDIEKQISESTNH

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	~{N}-[4-[[5-fluoranyl-7-(2-methoxyethoxy)quinazolin-4-yl]amino]phenyl]-2-(4-propan-2-yl-1,2,3-triazol-1-yl)ethanamide
Molecular weight formula_weight	479.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	280

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6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d6gqma_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamily	d.144.1 — Protein kinase-like (PK-like)
Family Family family	d.144.1.7 — Protein kinases, catalytic subunit

CATH v4.4 (4 domains)

Domain ID domain_id	6gqmA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily	20 — Phosphorylase Kinase; domain 1

Domain ID domain_id	6gqmA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily	10 — Transferase(Phosphotransferase) domain 1

Domain ID domain_id	6gqmB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily	20 — Phosphorylase Kinase; domain 1

Domain ID domain_id	6gqmB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily	10 — Transferase(Phosphotransferase) domain 1

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Unit-cell length a length_a	87.970 Å
Unit-cell length b length_b	90.180 Å
Unit-cell length c length_c	91.150 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	8

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	40.000 Å
R factor r_factor	0.2050
R_work r_work	0.2030
R_free r_free	0.2300

Crystal structure of human c-KIT kinase domain in complex with a small molecule inhibitor, AZD3229

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

Mast/stem cell growth factor receptor Kit

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

6gqm__assembly_1__model_1

6gqm__assembly_1__model_1 | I(q)

6gqm__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (1 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Crystal structure of human c-KIT kinase domain in complex with a small molecule inhibitor, AZD3229

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

Mast/stem cell growth factor receptor Kit

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

6gqm__assembly_1__model_1

6gqm__assembly_1__model_1 | I(q)

6gqm__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (1 domains)

CATH v4.4 (4 domains)

7. Citations (1)