SAXSdb — 1mnm

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

PROTEIN (MCM1 TRANSCRIPTIONAL REGULATOR)

Saccharomyces cerevisiae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 4 DNA 2	DNA (STE6 OPERATOR DNA) × 1 DNA (STE6 OPERATOR DNA) × 1 PROTEIN (MAT ALPHA-2 TRANSCRIPTIONAL REPRESSOR) × 2 （Q6B2C0） water × 6	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MCM1_YEAST
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain A； PDBConstruct 1–100； UniProt 1–100 Author chain B； PDBConstruct 1–100； UniProt 1–100

PROTEIN (MAT ALPHA-2 TRANSCRIPTIONAL REPRESSOR)

Saccharomyces cerevisiae

UniProt Q6B2C0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 4 DNA 2	DNA (STE6 OPERATOR DNA) × 1 DNA (STE6 OPERATOR DNA) × 1 PROTEIN (MCM1 TRANSCRIPTIONAL REGULATOR) × 2 （P11746） water × 6	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MTAL2_YEAST
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain C； PDBConstruct 1–87； UniProt 103–189 Author chain D； PDBConstruct 1–87； UniProt 103–189

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	1mnm
Deposition date deposition_date	1997-11-03
Structure title title	YEAST MATALPHA2/MCM1/DNA TERNARY TRANSCRIPTION COMPLEX CRYSTAL STRUCTURE
Keywords keywords	;TRANSCRIPTION REGULATION, TRANSCRIPTIONAL REPRESSION, DNA-BINDING PROTEIN, COMPLEX (TRANSCRIPTION-HOMEOBOX-DNA), TRANSCRIPTION-DNA COMPLEX ;; TRANSCRIPTION/DNA
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.

1mnm__assembly_1__model_1

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

Download this curve (.dat)

1mnm__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1mnm__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.52 Å
Rg (electron density)	27.38 Å
Total Rg	27.86 Å
Atom count	3604
Residues	372
Excluded volume	61016 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1mnm__assembly_1__model_1`	hexameric （6）	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 (5)

Entity 1 Entity 1 polymer

Description description	DNA (STE6 OPERATOR DNA)
Molecular weight formula_weight	8019.2 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	E
Atom count atom_count	3657

GATTACCTAATAGGGAAATTTACACG

Entity 2 Entity 2 polymer

Description description	DNA (STE6 OPERATOR DNA)
Molecular weight formula_weight	7952.1 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	F

CCGTGTAAATTTCCCTATTAGGTAAT

Entity 3 Entity 3 polymer

Description description	PROTEIN (MCM1 TRANSCRIPTIONAL REGULATOR)
Molecular weight formula_weight	11422.1 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B

MSDIEEGTPTNNGQQKERRKIEIKFIENKTRRHVTFSKRKHGIMKKAFELSVLTGTQVLLLVVSETGLVYTFSTPKFEPIVTQQEGRNLIQACLNAPDDE

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 4 Entity 4 polymer

Description description	PROTEIN (MAT ALPHA-2 TRANSCRIPTIONAL REPRESSOR)
Molecular weight formula_weight	10315.8 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D

QLTQKNKSADGLVFNVVTQDMINKSTKPYRGHRFTKENVRILESWFAKNIENPYLDTKGLENLMKNTSLSRIQIKNWVSNRRRKEKT

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 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	53

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1mnma_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.88 — SRF-like
Superfamily Superfamily superfamily	d.88.1 — SRF-like
Family Family family	d.88.1.1 — SRF-like

Domain ID domain_id	d1mnmb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.88 — SRF-like
Superfamily Superfamily superfamily	d.88.1 — SRF-like
Family Family family	d.88.1.1 — SRF-like

Domain ID domain_id	d1mnmc_
Class class	a — All alpha proteins
Fold Fold fold	a.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamily	a.4.1 — Homeodomain-like
Family Family family	a.4.1.1 — Homeodomain

Domain ID domain_id	d1mnmd_
Class class	a — All alpha proteins
Fold Fold fold	a.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamily	a.4.1 — Homeodomain-like
Family Family family	a.4.1.1 — Homeodomain

CATH v4.4 (4 domains)

Domain ID domain_id	1mnmA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1810 — SRF-like
Homologous superfamily homologous superfamily	10 — Transcription factor, MADS-box

Domain ID domain_id	1mnmB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1810 — SRF-like
Homologous superfamily homologous superfamily	10 — Transcription factor, MADS-box

Domain ID domain_id	1mnmC00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	60 — Homeodomain-like

Domain ID domain_id	1mnmD00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	60 — Homeodomain-like

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Unit-cell length a length_a	70.620 Å
Unit-cell length b length_b	72.550 Å
Unit-cell length c length_c	150.700 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	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.250 Å
Low-resolution limit resolution_low	25.000 Å
R factor r_factor	0.2400
R_work r_work	0.2400
R_free r_free	0.2850

YEAST MATALPHA2/MCM1/DNA TERNARY TRANSCRIPTION COMPLEX CRYSTAL STRUCTURE

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

PROTEIN (MCM1 TRANSCRIPTIONAL REGULATOR)

State in the Current Structure

Other States of the Same Protein in the Database

PROTEIN (MAT ALPHA-2 TRANSCRIPTIONAL REPRESSOR)

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

1mnm__assembly_1__model_1

1mnm__assembly_1__model_1 | I(q)

1mnm__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (3)

YEAST MATALPHA2/MCM1/DNA TERNARY TRANSCRIPTION COMPLEX CRYSTAL STRUCTURE

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

PROTEIN (MCM1 TRANSCRIPTIONAL REGULATOR)

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

PROTEIN (MAT ALPHA-2 TRANSCRIPTIONAL REPRESSOR)

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

1mnm__assembly_1__model_1

1mnm__assembly_1__model_1 | I(q)

1mnm__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (3)