SAXSdb — 1mb1

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

MLU1-BOX BINDING PROTEIN

Saccharomyces cerevisiae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MBP1_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–124； UniProt 1–124

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	1mb1
Deposition date deposition_date	1997-07-23
Structure title title	MBP1 FROM SACCHAROMYCES CEREVISIAE
Keywords keywords	TRANSCRIPTION REGULATION, CELL-CYCLE, TRANSCRIPTION FACTOR; TRANSCRIPTION REGULATION
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.

1mb1__assembly_1__model_1

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

Download this curve (.dat)

1mb1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1mb1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	13.84 Å
Rg (electron density)	12.44 Å
Total Rg	13.89 Å
Atom count	790
Residues	98
Excluded volume	14190 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1mb1__assembly_1__model_1`	monomeric （1）	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 (2)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1mb1a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.34 — DNA-binding domain of Mlu1-box binding protein MBP1
Superfamily Superfamily superfamily	d.34.1 — DNA-binding domain of Mlu1-box binding protein MBP1
Family Family family	d.34.1.1 — DNA-binding domain of Mlu1-box binding protein MBP1

CATH v4.4 (1 domains)

Domain ID domain_id	1mb1A00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	260 — Mlu1-box Binding Protein; DNA-binding Domain
Homologous superfamily homologous superfamily	10 — Transcription regulator HTH, APSES-type DNA-binding domain

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Unit-cell length a length_a	42.580 Å
Unit-cell length b length_b	42.580 Å
Unit-cell length c length_c	123.680 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 41 21 2
Space-group number int_tables_number	92
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	7.000 Å
R factor r_factor	—
R_work r_work	0.2150
R_free r_free	0.2900

Description description	MLU1-BOX BINDING PROTEIN
Molecular weight formula_weight	14900.9 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	850

MBP1 FROM SACCHAROMYCES CEREVISIAE

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

MLU1-BOX BINDING 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

1mb1__assembly_1__model_1

1mb1__assembly_1__model_1 | I(q)

1mb1__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

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)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	60

MBP1 FROM SACCHAROMYCES CEREVISIAE

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

MLU1-BOX BINDING 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

1mb1__assembly_1__model_1

1mb1__assembly_1__model_1 | I(q)

1mb1__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)