SAXSdb — 2kfk

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

Bud emergence protein 1

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	Cell division control protein 24 × 1 （P11433）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BEM1_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–78； UniProt 477–551

Cell division control protein 24

Saccharomyces cerevisiae

UniProt P11433

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Bud emergence protein 1 × 1 （P29366）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CDC24_YEAST
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 4–86； UniProt 761–854

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	2kfk
Deposition date deposition_date	2009-02-23
Structure title title	Solution structure of Bem1p PB1 domain complexed with Cdc24p PB1 domain
Keywords keywords	PB1, budding, yeast, Phox, SIGNALING PROTEIN; SIGNALING PROTEIN
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.

2kfk__assembly_1__model_9

Assembly 1 · Model 9 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2kfk__assembly_1__model_9 | I(q)

100 plotted points; both axes use logarithmic scales.

2kfk__assembly_1__model_9 | P(r) · Pending

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

Rg（Guinier）	17.14 Å
Rg (electron density)	15.99 Å
Total Rg	17.04 Å
Atom count	2700
Residues	164
Excluded volume	24148 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2kfk__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`2kfk__assembly_1__model_2`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`2kfk__assembly_1__model_3`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`2kfk__assembly_1__model_4`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`2kfk__assembly_1__model_5`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`2kfk__assembly_1__model_6`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`2kfk__assembly_1__model_7`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`2kfk__assembly_1__model_8`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`2kfk__assembly_1__model_9`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`2kfk__assembly_1__model_10`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	11	`2kfk__assembly_1__model_11`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	12	`2kfk__assembly_1__model_12`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	13	`2kfk__assembly_1__model_13`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	14	`2kfk__assembly_1__model_14`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	15	`2kfk__assembly_1__model_15`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	16	`2kfk__assembly_1__model_16`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	17	`2kfk__assembly_1__model_17`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	18	`2kfk__assembly_1__model_18`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	19	`2kfk__assembly_1__model_19`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	20	`2kfk__assembly_1__model_20`	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 (2)

Entity 1 Entity 1 polymer

Description description	Bud emergence protein 1
Molecular weight formula_weight	9037.5 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	54000

PHMKTTKIKFYYKDDIFALMLKGDTTYKELRSKIAPRIDTDNFKLQTKLFDGSGEEIKTDSQVSNIIQAKLKISVHDI

Source Source

Source organism organism	Saccharomyces cerevisiae
Common name common_name	yeast
NCBI taxonomy ID ncbi_taxonomy_id	4932
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Cell division control protein 24
Molecular weight formula_weight	9993.3 kDa
Mutation mutation	DELETE UNP RESIDUES 770-777, 807-809
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

PLGSILFRISYNSEIFTLLVEKVWNFDDLIMAINSKISNTHISPITKIKYQDEDGDFVVLGSDEDWNVAKEMLAENNEKFLNIRLY

Source Source

Source organism organism	Saccharomyces cerevisiae
Common name common_name	yeast
NCBI taxonomy ID ncbi_taxonomy_id	4932
Host organism host_organism	Escherichia coli

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2kfka1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.2 — CAD & PB1 domains
Family Family family	d.15.2.2 — PB1 domain

Domain ID domain_id	d2kfka2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2kfkb1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.2 — CAD & PB1 domains
Family Family family	d.15.2.2 — PB1 domain

Domain ID domain_id	d2kfkb2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id	2kfkA00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Domain ID domain_id	2kfkB00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

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Solution structure of Bem1p PB1 domain complexed with Cdc24p PB1 domain

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

Bud emergence protein 1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Cell division control protein 24

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

2kfk__assembly_1__model_9

2kfk__assembly_1__model_9 | I(q)

2kfk__assembly_1__model_9 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)