SAXSdb — 2uy1

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

CLEAVAGE STIMULATION FACTOR 77

ENCEPHALITOZOON CUNICULI

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8SWC5_ENCCU
Isoform	—
PDB entities	1, 2
Chains and sequence ranges	Author chain A； PDBConstruct 1–493； UniProt 1–493 Author chain B； PDBConstruct 1–493； UniProt 1–493

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	2uy1
Deposition date deposition_date	2007-04-02
Structure title title	CRYSTAL STRUCTURE OF CSTF-77
Keywords keywords	RNA-BINDING PROTEIN, RNA BINDING PROTEIN; RNA BINDING 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.

2uy1__assembly_1__model_1

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

Download this curve (.dat)

2uy1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2uy1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	39.29 Å
Rg (electron density)	39.44 Å
Total Rg	39.59 Å
Atom count	6883
Residues	822
Excluded volume	123550 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2uy1__assembly_1__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 (3)

Entity 1 Entity 1 polymer

Description description	CLEAVAGE STIMULATION FACTOR 77
Molecular weight formula_weight	58228.9 kDa
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	7223

MDAEEKMGVELSSPSAIMEHARRLYMSKDYRSLESLFGRCLKKSYNLDLWMLYIEYVRKVSQKKFKLYEVYEFTLGQFENYWDSYGLYKEYIEEEGKIEDEQTRIEKIRNGYMRALQTPMGSLSELWKDFENFELELNKITGKKIVGDTLPIFQSSFQRYQQIQPLIRGWSVKNAARLIDLEMENGMKLGGRPHESRMHFIHNYILDSFYYAEEVYFFYSEYLIGIGQKEKAKKVVERGIEMSDGMFLSLYYGLVMDEEAVYGDLKRKYSMGEAESAEKVFSKELDLLRINHLNYVLKKRGLELFRKLFIELGNEGVGPHVFIYCAFIEYYATGSRATPYNIFSSGLLKHPDSTLLKEEFFLFLLRIGDEENARALFKRLEKTSRMWDSMIEYEFMVGSMELFRELVDQKMDAIKADAILPPLPPREHNVQMEGILGRYHCFLDSFNFLDLKIRDNSRLLDEFMENLPKISQQNNVLSNLRVEKVISLLKSVQ

Source Source

Source organism organism	ENCEPHALITOZOON CUNICULI
NCBI taxonomy ID ncbi_taxonomy_id	6035
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	CLEAVAGE STIMULATION FACTOR 77
Molecular weight formula_weight	58221.9 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MDAEEKMGVELSSPSAIMEHARRLYMSKDYRSLESLFGRCLWKSYNLDLWMLYIEYVRKVSQKKFKLFEVYEFTLGQFENYWDSYGLFKEYIEELGKIEDEQTRIEKIRNGYMRALQTPMGSLSELWKDFENFELELNKITGKKIVGDTLPLFQSSFQRYQQIQPLIRGWSVKNAARLIDLEMENGMKLGGRPHESRMHFIHNYILDSFFYAEEVYFFYSEYLIGIGQKEKAKKVVERGIEMSDGMFLSLYYGLVMDEEAVYGDLKRKYSMGEAESAEKVFSKELDLLRINHLNYVLKKRGLELFRKLFIELGNEGVGPHVFIYCAFIEYYATGSRATPYNIFSSGLLKHPDSTLLKEEFFLFLLRIGDEENARALFKRLEKTSRMWDSMIEYEFMVGSMELFRELVDQKMDAIKADAILPPLPPREHNVQMEGILGRYHCFLDSFNFLDLKIRDNSRLLDEFMENLPKISQQNNVLSNLRVEKVISLLKSVQ

Source Source

Source organism organism	ENCEPHALITOZOON CUNICULI
NCBI taxonomy ID ncbi_taxonomy_id	6035
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	320

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	2uy1A00
Class class	1 — Mainly Alpha
Architecture architecture	25 — Alpha Horseshoe
Topology topology	40 — Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat
Homologous superfamily homologous superfamily	10 — Tetratricopeptide repeat domain

Domain ID domain_id	2uy1B00
Class class	1 — Mainly Alpha
Architecture architecture	25 — Alpha Horseshoe
Topology topology	40 — Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat
Homologous superfamily homologous superfamily	10 — Tetratricopeptide repeat domain

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Unit-cell length a length_a	44.440 Å
Unit-cell length b length_b	148.280 Å
Unit-cell length c length_c	91.440 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	92.15 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	2

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	91.290 Å
R factor r_factor	0.2270
R_work r_work	0.2250
R_free r_free	0.2800

CRYSTAL STRUCTURE OF CSTF-77

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

CLEAVAGE STIMULATION FACTOR 77

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

2uy1__assembly_1__model_1

2uy1__assembly_1__model_1 | I(q)

2uy1__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF CSTF-77

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

CLEAVAGE STIMULATION FACTOR 77

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

2uy1__assembly_1__model_1

2uy1__assembly_1__model_1 | I(q)

2uy1__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)