SAXSdb — 1qd1

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

FORMIMINOTRANSFERASE-CYCLODEAMINASE

Sus scrofa

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	N-{[4-({[(6R)-2-amino-5-formyl-4-oxo-1,4,5,6,7,8-hexahydropteridin-6-yl]methyl}amino)phenyl]carbonyl}-L-glutamic acid × 2 GLYCEROL × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FTCD_PIG
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–325； UniProt 2–326 Author chain B； PDBConstruct 1–325； UniProt 2–326

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	1qd1
Deposition date deposition_date	1999-07-08
Structure title title	THE CRYSTAL STRUCTURE OF THE FORMIMINOTRANSFERASE DOMAIN OF FORMIMINOTRANSFERASE-CYCLODEAMINASE.
Keywords keywords	FUNCTIONAL DIMER, ALPHA-BETA-BETA-ALPHA SANDWICH, ELECTROSTATICALLY CHARGED SUBSTRATE TUNNEL, TRANSFERASE; TRANSFERASE
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.

1qd1__assembly_1__model_1

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

Download this curve (.dat)

1qd1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qd1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.98 Å
Rg (electron density)	29.30 Å
Total Rg	29.86 Å
Atom count	5080
Residues	644
Excluded volume	90305 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qd1__assembly_1__model_1`	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 (4)

Entity 1 Entity 1 polymer

Description description	FORMIMINOTRANSFERASE-CYCLODEAMINASE
Molecular weight formula_weight	35878.9 kDa
EC 编号 ec_number	2.1.2.5
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	6042

SQLVECVPNFSEGKNQEVIDAISRAVAQTPGCVLLDVDSGPSTNRTVYTFVGRPEDVVEGALNAARAAYQLIDMSRHHGEHPRMGALDVCPFIPVRGVTMDECVRCAQAFGQRLAEELGVPVYLYGEAARTAGRQSLPALRAGEYEALPEKLKQAEWAPDFGPSAFVPSWGATVAGARKFLLAFNINLLSTREQAHRIALDLREQGRGKDQPGRLKKVQAIGWYLDEKNLAQVSTNLLDFEVTGLHTVFEETCREAQELSLPVVGSQLVGLVPLKALLDAAAFYCEKENLFLLQDEHRIRLVVNRLGLDSLAPFKPKERIIEYLV

Source Source

Source organism organism	Sus scrofa
Common name common_name	pig
NCBI taxonomy ID ncbi_taxonomy_id	9823
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	N-{[4-({[(6R)-2-amino-5-formyl-4-oxo-1,4,5,6,7,8-hexahydropteridin-6-yl]methyl}amino)phenyl]carbonyl}-L-glutamic acid
Molecular weight formula_weight	473.4 kDa
Mutation mutation	PRODUCT ANALOGUE OF THE NATURAL SUBSTRATE
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	771

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1qd1a1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.34 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.
Family Family family	d.58.34.1 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.

Domain ID domain_id	d1qd1a2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.34 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.
Family Family family	d.58.34.1 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.

Domain ID domain_id	d1qd1b1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.34 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.
Family Family family	d.58.34.1 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.

Domain ID domain_id	d1qd1b2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.34 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.
Family Family family	d.58.34.1 — Formiminotransferase domain of formiminotransferase-cyclodeaminase.

CATH v4.4 (4 domains)

Domain ID domain_id	1qd1A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	990 — Formiminotransferase-cyclodeaminase; Chain B, domain 1
Homologous superfamily homologous superfamily	10 — Formiminotransferase, N-terminal subdomain

Domain ID domain_id	1qd1A02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	670 — Formiminotransferase, C-terminal subdomain

Domain ID domain_id	1qd1B01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	990 — Formiminotransferase-cyclodeaminase; Chain B, domain 1
Homologous superfamily homologous superfamily	10 — Formiminotransferase, N-terminal subdomain

Domain ID domain_id	1qd1B02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	670 — Formiminotransferase, C-terminal subdomain

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Unit-cell length a length_a	64.310 Å
Unit-cell length b length_b	103.840 Å
Unit-cell length c length_c	122.770 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	1.700 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	—
R_work r_work	0.1910
R_free r_free	0.2130

THE CRYSTAL STRUCTURE OF THE FORMIMINOTRANSFERASE DOMAIN OF FORMIMINOTRANSFERASE-CYCLODEAMINASE.

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

FORMIMINOTRANSFERASE-CYCLODEAMINASE

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

1qd1__assembly_1__model_1

1qd1__assembly_1__model_1 | I(q)

1qd1__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

THE CRYSTAL STRUCTURE OF THE FORMIMINOTRANSFERASE DOMAIN OF FORMIMINOTRANSFERASE-CYCLODEAMINASE.

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

FORMIMINOTRANSFERASE-CYCLODEAMINASE

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

1qd1__assembly_1__model_1

1qd1__assembly_1__model_1 | I(q)

1qd1__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)