SAXSdb — 1x9x

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

Serine/threonine-protein kinase STE11

Saccharomyces cerevisiae

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	STE11_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–68； UniProt 37–104 Author chain B； PDBConstruct 1–68； UniProt 37–104

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	1x9x
Deposition date deposition_date	2004-08-24
Structure title title	Solution Structure of Dimeric SAM Domain from MAPKKK Ste11
Keywords keywords	SAM domain, MAP kinase, Ste11, TRANSFERASE; TRANSFERASE
Experimental Method method	SOLUTION NMR

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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.

1x9x__assembly_1__model_6

Assembly 1 · Model 6 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1x9x__assembly_1__model_6 | I(q)

100 plotted points; both axes use logarithmic scales.

1x9x__assembly_1__model_6 | P(r) · Pending

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

Rg（Guinier）	16.35 Å
Rg (electron density)	15.40 Å
Total Rg	16.49 Å
Atom count	2088
Residues	124
Excluded volume	18606 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1x9x__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`1x9x__assembly_1__model_2`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`1x9x__assembly_1__model_3`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`1x9x__assembly_1__model_4`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`1x9x__assembly_1__model_5`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`1x9x__assembly_1__model_6`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`1x9x__assembly_1__model_7`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`1x9x__assembly_1__model_8`	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) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1x9xa_
Class class	a — All alpha proteins
Fold Fold fold	a.60 — SAM domain-like
Superfamily Superfamily superfamily	a.60.1 — SAM/Pointed domain
Family Family family	a.60.1.2 — SAM (sterile alpha motif) domain

Domain ID domain_id	d1x9xb_
Class class	a — All alpha proteins
Fold Fold fold	a.60 — SAM domain-like
Superfamily Superfamily superfamily	a.60.1 — SAM/Pointed domain
Family Family family	a.60.1.2 — SAM (sterile alpha motif) domain

CATH v4.4 (2 domains)

Domain ID domain_id	1x9xA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily	50 — Transcription Factor, Ets-1

Domain ID domain_id	1x9xB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily	50 — Transcription Factor, Ets-1

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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	1

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

Description description	Serine/threonine-protein kinase STE11
Molecular weight formula_weight	7960.2 kDa
EC 编号 ec_number	2.7.1.37
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	16704

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 BL21(DE3)

Solution Structure of Dimeric SAM Domain from MAPKKK Ste11

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

Serine/threonine-protein kinase STE11

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

1x9x__assembly_1__model_6

1x9x__assembly_1__model_6 | I(q)

1x9x__assembly_1__model_6 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Solution Structure of Dimeric SAM Domain from MAPKKK Ste11

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

Serine/threonine-protein kinase STE11

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

1x9x__assembly_1__model_6

1x9x__assembly_1__model_6 | I(q)

1x9x__assembly_1__model_6 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)