7ttd

Tubulin-RB3_SLD in complex with compound 12e

Method: X-RAY DIFFRACTION

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

Tubulin alpha-1B chain

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	Tubulin beta chain × 2 （A0A287AGU7） Stathmin-4 × 1 （P63043） GUANOSINE-5'-TRIPHOSPHATE × 3 SULFATE ION × 4 GUANOSINE-5'-DIPHOSPHATE × 1 7-methoxy-4-[2-(morpholin-4-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl]-3,4-dihydroquinoxalin-2(1H)-one × 2 MAGNESIUM ION × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TBA1B_PIG
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–438； UniProt 1–438 Author chain C； PDBConstruct 1–438； UniProt 1–438

Tubulin beta chain

OrganismNot specified

UniProt A0A287AGU7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	Tubulin alpha-1B chain × 2 （Q2XVP4） Stathmin-4 × 1 （P63043） GUANOSINE-5'-TRIPHOSPHATE × 3 SULFATE ION × 4 GUANOSINE-5'-DIPHOSPHATE × 1 7-methoxy-4-[2-(morpholin-4-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl]-3,4-dihydroquinoxalin-2(1H)-one × 2 MAGNESIUM ION × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A287AGU7_PIG
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–433； UniProt 1–433 Author chain D； PDBConstruct 1–433； UniProt 1–433

Stathmin-4

Rattus norvegicus

UniProt P63043

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	Tubulin alpha-1B chain × 2 （Q2XVP4） Tubulin beta chain × 2 （A0A287AGU7） GUANOSINE-5'-TRIPHOSPHATE × 3 SULFATE ION × 4 GUANOSINE-5'-DIPHOSPHATE × 1 7-methoxy-4-[2-(morpholin-4-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl]-3,4-dihydroquinoxalin-2(1H)-one × 2 MAGNESIUM ION × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	STMN4_RAT
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain E； PDBConstruct 3–143； UniProt 49–189

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	7ttd
Deposition date deposition_date	2022-02-01
Structure title title	Tubulin-RB3_SLD in complex with compound 12e
Keywords keywords	MICROTUBULE INHIBITOR, COLCHICINE, CELL CYCLE, CANCER, INHIBITOR COMPLEX, CELL CYCLE-INHIBITOR complex; CELL CYCLE/INHIBITOR
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.

7ttd__assembly_1__model_1

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

Download this curve (.dat)

7ttd__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7ttd__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	51.34 Å
Rg (electron density)	52.21 Å
Total Rg	52.03 Å
Atom count	14552
Residues	1829
Excluded volume	256740 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7ttd__assembly_1__model_1`	pentameric （5）	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 (9)

Entity 1 Entity 1 polymer

Description description	Tubulin alpha-1B chain
Molecular weight formula_weight	48780.1 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C
Atom count atom_count	14686

MRECISIHVGQAGVQIGNACWELYCLEHGIQPDGQMPSDKTIGGGDDSFNTFFSETGAGKHVPRAVFVDLEPTVIDEVRTGTYRQLFHPEQLITGKEDAANNYARGHYTIGKEIIDLVLDRIRKLADQCTGLQGFLVFHSFGGGTGSGFTSLLMERLSVDYGKKSKLEFSIYPAPQVSTAVVEPYNSILTTHTTLEHSDCAFMVDNEAIYDICRRNLDIERPTYTNLNRLISQIVSSITASLRFDGALNVDLTEFQTNLVPYPRIHFPLATYAPVISAEKAYHEQLSVAEITNACFEPANQMVKCDPRHGKYMACCLLYRGDVVPKDVNAAIATIKTKRSIQFVDWCPTGFKVGINYQPPTVVPGGDLAKVQRAVCMLSNTTAIAEAWARLDHKFDLMYAKRAFVHWYVGEGMEEGEFSEAREDMAALEKDYEEVGVD

Entity 2 Entity 2 polymer

Description description	Tubulin beta chain
Molecular weight formula_weight	48648.7 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,D

MREIVHIQAGQCGNQIGAKFWEVISDEHGIDPTGSYHGDSDLQLERINVYYNEATGNKYVPRAILVDLEPGTMDSVRSGPFGQIFRPDNFVFGQSGAGNNWAKGHYTEGAELVDSVLDVVRKESESCDCLQGFQLTHSLGGGTGSGMGTLLISKIREEYPDRIMNTFSVMPSPKVSDTVVEPYNATLSVHQLVENTDETYCIDNEALYDICFRTLKLTTPTYGDLNHLVSATMSGVTTCLRFPGQLNADLRKLAVNMVPFPRLHFFMPGFAPLTSRGSQQYRALTVPELTQQMFDSKNMMAACDPRHGRYLTVAAIFRGRMSMKEVDEQMLNVQNKNSSYFVEWIPNNVKTAVCDIPPRGLKMSATFIGNSTAIQELFKRISEQFTAMFRRKAFLHWYTGEGMDEMEFTEAESNMNDLVSEYQQYQDATADEQ

Entity 3 Entity 3 polymer

Description description	Stathmin-4
Molecular weight formula_weight	16851.1 kDa
Mutation mutation	C14A, F20W
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

MADMEVIELNKATSGQSWEVILKPPSFDGVPEFNASLPRRRDPSLEEIQKKLEAAEERRKYQEAELLKHLAEKREHEREVIQKAIEENNNFIKMAKEKLAQKMESNKENREAHLAAMLERLQEKDKHAEEVRKNKELKEEASR

Source Source

Source organism organism	Rattus norvegicus
Common name common_name	Norway rat
NCBI taxonomy ID ncbi_taxonomy_id	10116
Host organism host_organism	Escherichia coli

Entity 4 Entity 4 non-polymer

Description description	GUANOSINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	523.2 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 5 Entity 5 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 6 Entity 6 non-polymer

Description description	GUANOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	443.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 non-polymer

Description description	7-methoxy-4-[2-(morpholin-4-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl]-3,4-dihydroquinoxalin-2(1H)-one
Molecular weight formula_weight	381.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 8 Entity 8 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 9 Entity 9 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	134

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6. Fold Classification (SCOP + CATH) 12 domains

CATH v4.4 (12 domains)

Domain ID domain_id	7ttdA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1440 — Tubulin/FtsZ, GTPase domain

Domain ID domain_id	7ttdA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1330 — 60s Ribosomal Protein L30; Chain: A;
Homologous superfamily homologous superfamily	20 — Tubulin/FtsZ, C-terminal domain

Domain ID domain_id	7ttdA03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	600 — Helix hairpin bin

Domain ID domain_id	7ttdB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1440 — Tubulin/FtsZ, GTPase domain

Domain ID domain_id	7ttdB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1330 — 60s Ribosomal Protein L30; Chain: A;
Homologous superfamily homologous superfamily	20 — Tubulin/FtsZ, C-terminal domain

Domain ID domain_id	7ttdB03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	600 — Helix hairpin bin

Domain ID domain_id	7ttdC01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1440 — Tubulin/FtsZ, GTPase domain

Domain ID domain_id	7ttdC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1330 — 60s Ribosomal Protein L30; Chain: A;
Homologous superfamily homologous superfamily	20 — Tubulin/FtsZ, C-terminal domain

Domain ID domain_id	7ttdC03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	600 — Helix hairpin bin

Domain ID domain_id	7ttdD01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1440 — Tubulin/FtsZ, GTPase domain

Domain ID domain_id	7ttdD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1330 — 60s Ribosomal Protein L30; Chain: A;
Homologous superfamily homologous superfamily	20 — Tubulin/FtsZ, C-terminal domain

Domain ID domain_id	7ttdD03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	600 — Helix hairpin bin

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Unit-cell length a length_a	65.795 Å
Unit-cell length b length_b	127.211 Å
Unit-cell length c length_c	250.461 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	orthorhombic

Resolution resolution	2.270 Å
Low-resolution limit resolution_low	42.960 Å
R factor r_factor	0.1745
R_work r_work	0.1735
R_free r_free	0.2242

Tubulin-RB3_SLD in complex with compound 12e

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

Tubulin alpha-1B chain

State in the Current Structure

Other States of the Same Protein in the Database

Tubulin beta chain

State in the Current Structure

Other States of the Same Protein in the Database

Stathmin-4

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

7ttd__assembly_1__model_1

7ttd__assembly_1__model_1 | I(q)

7ttd__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 (9)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 non-polymer

Entity 9 Entity 9 water

6. Fold Classification (SCOP + CATH) 12 domains

CATH v4.4 (12 domains)

7. Citations (1)

Tubulin-RB3_SLD in complex with compound 12e

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

Tubulin alpha-1B chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Tubulin beta chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Stathmin-4

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

7ttd__assembly_1__model_1

7ttd__assembly_1__model_1 | I(q)

7ttd__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 (9)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 non-polymer

Entity 9 Entity 9 water

6. Fold Classification (SCOP + CATH) 12 domains

CATH v4.4 (12 domains)

7. Citations (1)