1dm5

ANNEXIN XII E105K HOMOHEXAMER CRYSTAL STRUCTURE

Method: X-RAY DIFFRACTION

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

ANNEXIN XII E105K MUTANT HOMOHEXAMER

Hydra vulgaris

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	CALCIUM ION × 11 water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ANX12_HYDAT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–315； UniProt 2–316 Author chain B； PDBConstruct 1–315； UniProt 2–316 Author chain C； PDBConstruct 1–315； UniProt 2–316 Author chain D； PDBConstruct 1–315； UniProt 2–316 Author chain E； PDBConstruct 1–315； UniProt 2–316 Author chain F； PDBConstruct 1–315； UniProt 2–316

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	1dm5
Deposition date deposition_date	1999-12-13
Structure title title	ANNEXIN XII E105K HOMOHEXAMER CRYSTAL STRUCTURE
Keywords keywords	;HOMOHEXAMER, NOVEL PH-DEPENDENT HEXAMERIZATION SWITCH E76, LOW CALCIUM FORM, MIXED TYPEII/TYPEIII CALCIUM BINDING SITE, E105K EPSILON AMINO GROUP REPLACES INTERMOLECULAR CALCIUM, UNKNOWN FUNCTION ;; UNKNOWN FUNCTION
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.

1dm5__assembly_1__model_1

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

Download this curve (.dat)

1dm5__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1dm5__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	38.96 Å
Rg (electron density)	37.91 Å
Total Rg	38.30 Å
Atom count	14783
Residues	1890
Excluded volume	262720 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1dm5__assembly_1__model_1`	hexameric （6）	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	ANNEXIN XII E105K MUTANT HOMOHEXAMER
Molecular weight formula_weight	35024.5 kDa
Mutation mutation	E105K
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	15709

VVQGTVKPHASFNSREDAETLRKAMKGIGTDEKSITHILATRSNAQRQQIKTDYTTLFGKHLEDELKSELSGNYEAAALALLRKPDEFLAEQLHAAMKGLGTDKNALIDILCTQSNAQIHAIKAAFKLLYKEDLEKEIISETSGNFQRLLVSMLQGGRKEDEPVNAAHAAEDAAAIYQAGEGQIGTDESRFNAVLATRSYPQLHQIFHEYSKISNKTILQAIENEFSGDIKNGLLAIVKSVENRFAYFAERLHHAMKGLGTSDKTLIRILVSRSEIDLANIKETFQAMYGKSLYEFIADDCSGDYKDLLLQITGH

Source Source

Source organism organism	Hydra vulgaris
NCBI taxonomy ID ncbi_taxonomy_id	6087
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	11

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	926

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6. Fold Classification (SCOP + CATH) 30 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1dm5a_
Class class	a — All alpha proteins
Fold Fold fold	a.65 — Annexin
Superfamily Superfamily superfamily	a.65.1 — Annexin
Family Family family	a.65.1.1 — Annexin

Domain ID domain_id	d1dm5b_
Class class	a — All alpha proteins
Fold Fold fold	a.65 — Annexin
Superfamily Superfamily superfamily	a.65.1 — Annexin
Family Family family	a.65.1.1 — Annexin

Domain ID domain_id	d1dm5c_
Class class	a — All alpha proteins
Fold Fold fold	a.65 — Annexin
Superfamily Superfamily superfamily	a.65.1 — Annexin
Family Family family	a.65.1.1 — Annexin

Domain ID domain_id	d1dm5d_
Class class	a — All alpha proteins
Fold Fold fold	a.65 — Annexin
Superfamily Superfamily superfamily	a.65.1 — Annexin
Family Family family	a.65.1.1 — Annexin

Domain ID domain_id	d1dm5e_
Class class	a — All alpha proteins
Fold Fold fold	a.65 — Annexin
Superfamily Superfamily superfamily	a.65.1 — Annexin
Family Family family	a.65.1.1 — Annexin

Domain ID domain_id	d1dm5f_
Class class	a — All alpha proteins
Fold Fold fold	a.65 — Annexin
Superfamily Superfamily superfamily	a.65.1 — Annexin
Family Family family	a.65.1.1 — Annexin

CATH v4.4 (24 domains)

Domain ID domain_id	1dm5A01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5A02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5A03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5A04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5B01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5B02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5B03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5B04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5C01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5C02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5C03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5C04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5D01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5D02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5D03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5D04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5E01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5E02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5E03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5E04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5F01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5F02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5F03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

Domain ID domain_id	1dm5F04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	220 — Annexin V; domain 1
Homologous superfamily homologous superfamily	10 — Annexin

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Unit-cell length a length_a	68.943 Å
Unit-cell length b length_b	162.544 Å
Unit-cell length c length_c	188.798 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	24

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	1.930 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.2150
R_work r_work	0.2080
R_free r_free	0.2630

ANNEXIN XII E105K HOMOHEXAMER CRYSTAL STRUCTURE

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

ANNEXIN XII E105K MUTANT HOMOHEXAMER

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

1dm5__assembly_1__model_1

1dm5__assembly_1__model_1 | I(q)

1dm5__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 (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) 30 domains

SCOP 2.08 (6 domains)

CATH v4.4 (24 domains)

7. Citations (1)

ANNEXIN XII E105K HOMOHEXAMER CRYSTAL STRUCTURE

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

ANNEXIN XII E105K MUTANT HOMOHEXAMER

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

1dm5__assembly_1__model_1

1dm5__assembly_1__model_1 | I(q)

1dm5__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 (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) 30 domains

SCOP 2.08 (6 domains)

CATH v4.4 (24 domains)

7. Citations (1)