SAXSdb — 7s21

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

EncA

Myxococcus xanthus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 60	No other associated polymer	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 5	No other associated polymer	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 6	No other associated polymer	Consistent with protein count
5	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q1D6H4_MYXXD
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 8–301； UniProt 1–294

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	7s21
Deposition date deposition_date	2021-09-02
Structure title title	M. xanthus encapsulin shell protein EncA with T=1 symmetry
Keywords keywords	encapsulin, nanocage, iron storage, bacterial nano-compartment, CYTOSOLIC PROTEIN, VIRUS LIKE PARTICLE; VIRUS LIKE PARTICLE
Experimental Method method	ELECTRON MICROSCOPY

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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.

7s21__assembly_1__model_1

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

Download this curve (.dat)

7s21__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7s21__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	94.57 Å
Rg (electron density)	93.20 Å
Total Rg	93.29 Å
Atom count	122460
Residues	15900
Excluded volume	2174600 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7s21__assembly_1__model_1`	60-meric （60）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`7s21__assembly_2__model_1`	monomeric （1）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3	1	`7s21__assembly_3__model_1`	pentameric （5）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
4	1	`7s21__assembly_4__model_1`	hexameric （6）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
5	1	`7s21__assembly_5__model_1`	monomeric （1）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.

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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) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	7s21A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	3.40 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	5183

Description description	EncA
Molecular weight formula_weight	33505.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2041

M. xanthus encapsulin shell protein EncA with T=1 symmetry

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

EncA

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

7s21__assembly_1__model_1

7s21__assembly_1__model_1 | I(q)

7s21__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)

Source organism organism	Myxococcus xanthus
NCBI taxonomy ID ncbi_taxonomy_id	34
Host organism host_organism	Escherichia coli

M. xanthus encapsulin shell protein EncA with T=1 symmetry

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

EncA

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

7s21__assembly_1__model_1

7s21__assembly_1__model_1 | I(q)

7s21__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)