SAXSdb — 1zr2

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

Transposon gamma-delta resolvase

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Homooligomer	Protein 4 DNA 12	TCAGTGTCCGATAATTTAT × 4 AAA × 4 TTATCGGACACTG × 4	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TNR1_ECOLI
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain A； PDBConstruct 1–183； UniProt 1–183 Author chain B； PDBConstruct 1–183； UniProt 1–183

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	1zr2
Deposition date deposition_date	2005-05-18
Structure title title	Structure of a Synaptic gamma-delta Resolvase Tetramer Covalently Linked to two Cleaved DNAs
Keywords keywords	resolvase, site-specific, recombination, flat interface, recombination-DNA COMPLEX; recombination/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.

1zr2__assembly_1__model_1

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

Download this curve (.dat)

1zr2__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1zr2__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	44.82 Å
Rg (electron density)	42.96 Å
Total Rg	43.15 Å
Atom count	8520
Residues	870
Excluded volume	143090 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1zr2__assembly_1__model_1`	hexadecameric （16）	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	TCAGTGTCCGATAATTTAT
Molecular weight formula_weight	5809.8 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	X,J
Atom count atom_count	4260

TCAGTGTCCGATAATTTAT

Entity 2 Entity 2 polymer

Description description	AAA
Molecular weight formula_weight	894.7 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	Z,I

AAA

Entity 3 Entity 3 polymer

Description description	TTATCGGACACTG
Molecular weight formula_weight	3966.6 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	Y,K

TTATCGGACACTG

Entity 4 Entity 4 polymer

Description description	Transposon gamma-delta resolvase
Molecular weight formula_weight	20353.5 kDa
Mutation mutation	R2A, E56K, G101S, E102Y, M103I, E124Q
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

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

MALFGYARVSTSQQSLDIQVRALKDAGVKANRIFTDKASGSSSDRKGLDLLRMKVKEGDVILVKKLDRLGRDTADMIQLIKEFDAQGVSIRFIDDGISTDSYIGKMVVTILSAVAQAERQRILQRTNEGRQEAMAKGVVFGRKRKIDRDAVLNMWQQGLGASHISKTMNIARSTVYKVINESN

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

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6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1zr2a1
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.4.1.2 — Recombinase DNA-binding domain

Domain ID domain_id	d1zr2a2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.53 — Resolvase-like
Superfamily Superfamily superfamily	c.53.1 — Resolvase-like
Family Family family	c.53.1.1 — gamma,delta resolvase, catalytic domain

Domain ID domain_id	d1zr2b1
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.4.1.2 — Recombinase DNA-binding domain

Domain ID domain_id	d1zr2b2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.53 — Resolvase-like
Superfamily Superfamily superfamily	c.53.1 — Resolvase-like
Family Family family	c.53.1.1 — gamma,delta resolvase, catalytic domain

CATH v4.4 (6 domains)

Domain ID domain_id	1zr2A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1390 — Resolvase, N-terminal catalytic domain

Domain ID domain_id	1zr2A02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1zr2A03
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	1zr2B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1390 — Resolvase, N-terminal catalytic domain

Domain ID domain_id	1zr2B02
Class class	6 — Special
Architecture architecture	10 — Helix non-globular
Topology topology	250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1zr2B03
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	125.050 Å
Unit-cell length b length_b	125.050 Å
Unit-cell length c length_c	127.390 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	12

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

Resolution resolution	3.900 Å
Low-resolution limit resolution_low	34.500 Å
R factor r_factor	0.2697
R_work r_work	0.2638
R_free r_free	0.3224

Structure of a Synaptic gamma-delta Resolvase Tetramer Covalently Linked to two Cleaved DNAs

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

Transposon gamma-delta resolvase

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

1zr2__assembly_1__model_1

1zr2__assembly_1__model_1 | I(q)

1zr2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Structure of a Synaptic gamma-delta Resolvase Tetramer Covalently Linked to two Cleaved DNAs

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

Transposon gamma-delta resolvase

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

1zr2__assembly_1__model_1

1zr2__assembly_1__model_1 | I(q)

1zr2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (1)