SAXSdb — 2p2u

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

Host-nuclease inhibitor protein Gam, putative

Desulfovibrio vulgaris

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q72CZ5_DESVH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–171； UniProt 2–170 Author chain B； PDBConstruct 3–171； UniProt 2–170

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	2p2u
Deposition date deposition_date	2007-03-07
Structure title title	Crystal structure of putative host-nuclease inhibitor protein Gam from Desulfovibrio vulgaris
Keywords keywords	;STRUCTURAL GENOMICS, UNKNOWN FUNCTION, PSI-2, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGXRC, DNA BINDING PROTEIN ;; DNA BINDING PROTEIN
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.

2p2u__assembly_2__model_1

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

Download this curve (.dat)

2p2u__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2p2u__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	31.10 Å
Rg (electron density)	30.73 Å
Total Rg	31.23 Å
Atom count	2404
Residues	294
Excluded volume	43071 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2p2u__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2p2u__assembly_2__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2p2ua1
Class class	h — Coiled coil proteins
Fold Fold fold	h.4 — Antiparallel coiled-coil
Superfamily Superfamily superfamily	h.4.18 — Gam-like
Family Family family	h.4.18.1 — Gam-like

Domain ID domain_id	d2p2ub_
Class class	h — Coiled coil proteins
Fold Fold fold	h.4 — Antiparallel coiled-coil
Superfamily Superfamily superfamily	h.4.18 — Gam-like
Family Family family	h.4.18.1 — Gam-like

CATH v4.4 (2 domains)

Domain ID domain_id	2p2uA01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	170 —

Domain ID domain_id	2p2uB01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	170 —

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Unit-cell length a length_a	58.030 Å
Unit-cell length b length_b	93.408 Å
Unit-cell length c length_c	104.166 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 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.750 Å
Low-resolution limit resolution_low	12.000 Å
R factor r_factor	0.2450
R_work r_work	0.2420
R_free r_free	0.2900

Description description	Host-nuclease inhibitor protein Gam, putative
Molecular weight formula_weight	19479.4 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2424

Crystal structure of putative host-nuclease inhibitor protein Gam from Desulfovibrio vulgaris

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

Host-nuclease inhibitor protein Gam, putative

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

2p2u__assembly_2__model_1

2p2u__assembly_2__model_1 | I(q)

2p2u__assembly_2__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Desulfovibrio vulgaris
NCBI taxonomy ID ncbi_taxonomy_id	881
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	39

Crystal structure of putative host-nuclease inhibitor protein Gam from Desulfovibrio vulgaris

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

Host-nuclease inhibitor protein Gam, putative

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

2p2u__assembly_2__model_1

2p2u__assembly_2__model_1 | I(q)

2p2u__assembly_2__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)