SAXSdb — 1gxl

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

CHROMOSOME SEGREGATION SMC PROTEIN

THERMOTOGA MARITIMA

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9X0R4
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–213； UniProt 473–685 Author chain B； PDBConstruct 1–213； UniProt 473–685 Author chain C； PDBConstruct 1–213； UniProt 473–685 Author chain D； PDBConstruct 1–213； UniProt 473–685

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	1gxl
Deposition date deposition_date	2002-04-07
Structure title title	SMC hinge domain from T. maritima with coiled coil
Keywords keywords	CHROMOSOME SEGREGATION, SMC DIMERISATION DOMAIN, ANTI PARALLEL COILED COIL, SMC PROTEINS; CHROMOSOME SEGREGATION
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.

1gxl__assembly_1__model_1

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

Download this curve (.dat)

1gxl__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1gxl__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.67 Å
Rg (electron density)	23.63 Å
Total Rg	24.54 Å
Atom count	3276
Residues	410
Excluded volume	58479 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1gxl__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1gxl__assembly_2__model_1`	dimeric （2）	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 (1)

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1gxla_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.215 — Smc hinge domain
Superfamily Superfamily superfamily	d.215.1 — Smc hinge domain
Family Family family	d.215.1.1 — Smc hinge domain

Domain ID domain_id	d1gxlb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.215 — Smc hinge domain
Superfamily Superfamily superfamily	d.215.1 — Smc hinge domain
Family Family family	d.215.1.1 — Smc hinge domain

Domain ID domain_id	d1gxlc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.215 — Smc hinge domain
Superfamily Superfamily superfamily	d.215.1 — Smc hinge domain
Family Family family	d.215.1.1 — Smc hinge domain

Domain ID domain_id	d1gxld_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.215 — Smc hinge domain
Superfamily Superfamily superfamily	d.215.1 — Smc hinge domain
Family Family family	d.215.1.1 — Smc hinge domain

CATH v4.4 (8 domains)

Domain ID domain_id	1gxlA01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1060 — Taq DNA Polymerase; Chain T, domain 4
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1gxlA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	1620 —

Domain ID domain_id	1gxlB01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1060 — Taq DNA Polymerase; Chain T, domain 4
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1gxlB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	1620 —

Domain ID domain_id	1gxlC01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1060 — Taq DNA Polymerase; Chain T, domain 4
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1gxlC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	1620 —

Domain ID domain_id	1gxlD01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1060 — Taq DNA Polymerase; Chain T, domain 4
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1gxlD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	1620 —

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Unit-cell length a length_a	136.400 Å
Unit-cell length b length_b	115.500 Å
Unit-cell length c length_c	68.960 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	93.70 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.2524
R_work r_work	0.2524
R_free r_free	0.3010

Description description	CHROMOSOME SEGREGATION SMC PROTEIN
Molecular weight formula_weight	24261.7 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	6486

SMC hinge domain from T. maritima with coiled coil

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

CHROMOSOME SEGREGATION SMC PROTEIN

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

1gxl__assembly_1__model_1

1gxl__assembly_1__model_1 | I(q)

1gxl__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Source organism organism	THERMOTOGA MARITIMA
NCBI taxonomy ID ncbi_taxonomy_id	2336
Host organism host_organism	ESCHERICHIA COLI BL21(DE3)

SMC hinge domain from T. maritima with coiled coil

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

CHROMOSOME SEGREGATION SMC PROTEIN

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

1gxl__assembly_1__model_1

1gxl__assembly_1__model_1 | I(q)

1gxl__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

CATH v4.4 (8 domains)

7. Citations (1)