SAXSdb — 9y9b

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

Serine/threonine-protein kinase PLK4

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	SULFATE ION × 1 (1R,3r,5S)-3-hydroxy-N-[3-(pyridin-2-yl)-1H-pyrazol-4-yl]-8-azabicyclo[3.2.1]octane-8-carboxamide × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PLK4_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–276； UniProt 2–275

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	9y9b
Deposition date deposition_date	2025-09-13
Last revision last_revision	2026-02-18
Structure title title	PLK4 in complex with Compound 6 (3-hydroxy-N-(3-(pyridin-2-yl)-1H-pyrazol-4-yl)-8-azabicyclo[3.2.1]octane-8-carboxamide)
Keywords keywords	PLK4, type 1 inhibitor, SBDD, TRANSFERASE; TRANSFERASE
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.

9y9b__assembly_1__model_1

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

Download this curve (.dat)

9y9b__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9y9b__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.13 Å
Rg (electron density)	19.22 Å
Total Rg	20.15 Å
Atom count	1923
Residues	233
Excluded volume	34045 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9y9b__assembly_1__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	Serine/threonine-protein kinase PLK4
Molecular weight formula_weight	31723.7 kDa
EC 编号 ec_number	2.7.11.21
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	1953

SLATCIGEKIEDFKVGNLLGKGSFAGVYRAESIHTGLEVAIKMIDKKAMYKAGMVQRVQNEVKIHCQLKHPSILELYNYFEDSNYVYLVLEMCHNGEMNRYLKNRVKPFSENEARHFMHQIITGMLYLHSHGILHRDLTLSNLLLTRNMNIKIADFGLATQLKMPHEKHYTLCGTPNYISPEIATRSAHGLESDVWSLGCMFYTLLIGRPPFDTDTVKNTLNKVVLADYEMPSFLSIEAKDLIHQLLRRNPADRLSLSSVLDHPFMSRNSSTKSKDEG

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

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	(1R,3r,5S)-3-hydroxy-N-[3-(pyridin-2-yl)-1H-pyrazol-4-yl]-8-azabicyclo[3.2.1]octane-8-carboxamide
Molecular weight formula_weight	313.4 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	22

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Unit-cell length a length_a	62.333 Å
Unit-cell length b length_b	83.991 Å
Unit-cell length c length_c	43.030 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	4

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	orthorhombic

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	29.220 Å
R factor r_factor	0.2451
R_work r_work	0.2405
R_free r_free	0.3345

PLK4 in complex with Compound 6 (3-hydroxy-N-(3-(pyridin-2-yl)-1H-pyrazol-4-yl)-8-azabicyclo[3.2.1]octane-8-carboxamide)

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

Serine/threonine-protein kinase PLK4

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

9y9b__assembly_1__model_1

9y9b__assembly_1__model_1 | I(q)

9y9b__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

7. Citations (1)

PLK4 in complex with Compound 6 (3-hydroxy-N-(3-(pyridin-2-yl)-1H-pyrazol-4-yl)-8-azabicyclo[3.2.1]octane-8-carboxamide)

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

Serine/threonine-protein kinase PLK4

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

9y9b__assembly_1__model_1

9y9b__assembly_1__model_1 | I(q)

9y9b__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

7. Citations (1)