SAXSdb — 4ux3

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

STRUCTURAL MAINTENANCE OF CHROMOSOMES PROTEIN 3

SACCHAROMYCES CEREVISIAE

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	MITOTIC CHROMOSOME DETERMINANT-RELATED PROTEIN × 1 （A6ZXW3） MAGNESIUM ION × 1 PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SMC3_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–262； UniProt 2–261 Author chain A； PDBConstruct 275–535； UniProt 970–1230

MITOTIC CHROMOSOME DETERMINANT-RELATED PROTEIN

SACCHAROMYCES CEREVISIAE

UniProt A6ZXW3

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	STRUCTURAL MAINTENANCE OF CHROMOSOMES PROTEIN 3 × 1 （P47037） MAGNESIUM ION × 1 PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A6ZXW3_YEAS7
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–115； UniProt 1–115

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	4ux3
Deposition date deposition_date	2014-08-18
Structure title title	cohesin Smc3-HD:Scc1-N complex from yeast
Keywords keywords	PROTEIN BINDING, COHESIN, MITOSIS, CHROMOSOME SEGREGATION, KLEISIN, SMC; PROTEIN BINDING
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.

4ux3__assembly_1__model_1

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

Download this curve (.dat)

4ux3__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4ux3__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	38.58 Å
Rg (electron density)	39.84 Å
Total Rg	39.57 Å
Atom count	4098
Residues	507
Excluded volume	72977 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4ux3__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 (4)

Entity 1 Entity 1 polymer

Description description	STRUCTURAL MAINTENANCE OF CHROMOSOMES PROTEIN 3
Molecular weight formula_weight	62072.8 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	4098

MAYIKRVIIKGFKTYRNETIIDNFSPHQNVIIGSNGSGKSNFFAAIRFVLSDDYSNLKREERQGLIHQGSGGSVMSASVEIVFHDPDHSMILPSGVLSRGDDEVTIRRTVGLKKDDYQLNDRNVTKGDIVRMLETAGFSMNNPYNIVPQGKIVALTNAKDKERLQLLEDVVGAKSFEVKLKASLKKMEETEQKKIQINKEMGELNSKLSEMEQERKELEKYNELERNRKIYQFTLYDRELNEVINQMERLDGDYNNTVYSSESSKHPTSLVPRGSDITSDQLLQRLNDMNTEISGLKNVNKRAFENFKKFNERRKDLAERASELDESKDSIQDLIVKLKQQKVNAVDSTFQKVSENFEAVFERLVPRGTAKLIIHRKNDNANDHDESIDVDMDAESNESQNGKDSEIMYTGVSISVSFNSKQNEQLHVEQLSGGQKTVCAIALILAIQMVDPASFYLFDEIDAALDKQYRTAVATLLKELSKNAQFICTTFRTDMLQVADKFFRVKYENKISTVIEVNREEAIGFIRGSNKFAEVWSHPQFEK

Source Source

Source organism organism	SACCHAROMYCES CEREVISIAE
Common name common_name	;BAKER'S YEAST ;
NCBI taxonomy ID ncbi_taxonomy_id	4932
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	MITOTIC CHROMOSOME DETERMINANT-RELATED PROTEIN
Molecular weight formula_weight	13488.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MVTENPQRLTVLRLATNKGPLAQIWLASNMSNIPRGSVIQTHIAESAKEIAKASGCDDESGDNEYITLRTSGELLQGIVRVYSKQATFLLTDIKDTLTKISMLFKTSQKMTSTVNHHHHHH

Source Source

Source organism organism	SACCHAROMYCES CEREVISIAE
Common name common_name	;BAKER'S YEAST ;
NCBI taxonomy ID ncbi_taxonomy_id	4932
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 non-polymer

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

Entity 4 Entity 4 non-polymer

Description description	PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
Molecular weight formula_weight	523.2 kDa
Source method src_method	syn
Copy count entity_count	1

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Unit-cell length a length_a	73.151 Å
Unit-cell length b length_b	94.801 Å
Unit-cell length c length_c	284.768 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	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Resolution resolution	3.300 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.2766
R_work r_work	0.2738
R_free r_free	0.3286

cohesin Smc3-HD:Scc1-N complex from yeast

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

STRUCTURAL MAINTENANCE OF CHROMOSOMES PROTEIN 3

State in the Current Structure

Other States of the Same Protein in the Database

MITOTIC CHROMOSOME DETERMINANT-RELATED 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

4ux3__assembly_1__model_1

4ux3__assembly_1__model_1 | I(q)

4ux3__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

7. Citations (1)

cohesin Smc3-HD:Scc1-N complex from yeast

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

STRUCTURAL MAINTENANCE OF CHROMOSOMES PROTEIN 3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

MITOTIC CHROMOSOME DETERMINANT-RELATED 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

4ux3__assembly_1__model_1

4ux3__assembly_1__model_1 | I(q)

4ux3__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

7. Citations (1)