1dcp

DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN

Method: X-RAY DIFFRACTION

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

DCOH

Rattus norvegicus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	7,8-DIHYDROBIOPTERIN × 4 water × 4	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	7,8-DIHYDROBIOPTERIN × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PHS_RAT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–104； UniProt 1–103 Author chain B； PDBConstruct 2–104； UniProt 1–103 Author chain C； PDBConstruct 2–104； UniProt 1–103 Author chain D； PDBConstruct 2–104； UniProt 1–103 Author chain E； PDBConstruct 2–104； UniProt 1–103 Author chain F； PDBConstruct 2–104； UniProt 1–103 Author chain G； PDBConstruct 2–104； UniProt 1–103 Author chain H； PDBConstruct 2–104； UniProt 1–103

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	1dcp
Deposition date deposition_date	1996-05-16
Structure title title	DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN
Keywords keywords	;TRANSCRIPTIONAL STIMULATOR, DIMERIZATION COFACTOR, DEHYDRATASE, 4A-CARBINOLAMINE DEHYDRATASE, TRANSREGULATOR OF HOMEODOMAIN PROTEINS ;; TRANSCRIPTIONAL STIMULATOR
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.

1dcp__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1dcp__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1dcp__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	23.98 Å
Rg (electron density)	22.58 Å
Total Rg	23.53 Å
Atom count	3306
Residues	396
Excluded volume	58000 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1dcp__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1dcp__assembly_2__model_1`	tetrameric （4）	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 (3)

Entity 1 Entity 1 polymer

Description description	DCOH
Molecular weight formula_weight	12017.6 kDa
EC 编号 ec_number	4.2.1.96
Source method src_method	man
Copy count entity_count	8

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H
Atom count atom_count	6881

MAGKAHRLSAEERDQLLPNLRAVGWNELEGRDAIFKQFHFKDFNRAFGFMTRVALQAEKLDHHPEWFNVYNKVHITLSTHECAGLSERDINLASFIEQVAVSMT

Source Source

Source organism organism	Rattus norvegicus
Common name common_name	Norway rat
NCBI taxonomy ID ncbi_taxonomy_id	10116
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	7,8-DIHYDROBIOPTERIN
Molecular weight formula_weight	239.2 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	258

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6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d1dcpa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

Domain ID domain_id	d1dcpb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

Domain ID domain_id	d1dcpc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

Domain ID domain_id	d1dcpd_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

Domain ID domain_id	d1dcpe_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

Domain ID domain_id	d1dcpf_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

Domain ID domain_id	d1dcpg_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

Domain ID domain_id	d1dcph_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.74 — DCoH-like
Superfamily Superfamily superfamily	d.74.1 — PCD-like
Family Family family	d.74.1.1 — PCD-like

CATH v4.4 (8 domains)

Domain ID domain_id	1dcpA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

Domain ID domain_id	1dcpB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

Domain ID domain_id	1dcpC00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

Domain ID domain_id	1dcpD00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

Domain ID domain_id	1dcpE00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

Domain ID domain_id	1dcpF00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

Domain ID domain_id	1dcpG00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

Domain ID domain_id	1dcpH00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1360 — Gyrase A; domain 2
Homologous superfamily homologous superfamily	20 — Transcriptional coactivator/pterin dehydratase

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Unit-cell length a length_a	105.700 Å
Unit-cell length b length_b	105.700 Å
Unit-cell length c length_c	196.170 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	48

Space group space_group	P 32 2 1
Space-group number int_tables_number	154
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN

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

DCOH

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

1dcp__assembly_2__model_1

1dcp__assembly_2__model_1 | I(q)

1dcp__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (2)

DCOH, A BIFUNCTIONAL PROTEIN-BINDING TRANSCRIPTIONAL COACTIVATOR, COMPLEXED WITH BIOPTERIN

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

DCOH

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

1dcp__assembly_2__model_1

1dcp__assembly_2__model_1 | I(q)

1dcp__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (2)