SAXSdb — 1h80

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

IOTA-CARRAGEENASE

ALTEROMONAS SP. ATCC43554

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	CALCIUM ION × 3 CHLORIDE ION × 1 SODIUM ION × 3 GLYCEROL × 3 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	CALCIUM ION × 3 CHLORIDE ION × 1 SODIUM ION × 3 GLYCEROL × 3 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9F5I8_9ALTE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–464； UniProt 28–491 Author chain B； PDBConstruct 1–464； UniProt 28–491

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	1h80
Deposition date deposition_date	2001-01-22
Structure title title	1,3-ALPHA-1,4-BETA-D-GALACTOSE-4-SULFATE- 3,6-ANHYDRO-D-GALACTOSE-2-SULFATE 4 GALACTOHYDROLASE
Keywords keywords	HYDROLASE, IOTA-CARRAGEENAN DOUBLE HELIX DEGRADATION; HYDROLASE
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.

1h80__assembly_2__model_1

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

Download this curve (.dat)

1h80__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1h80__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	23.23 Å
Rg (electron density)	22.12 Å
Total Rg	23.05 Å
Atom count	3407
Residues	430
Excluded volume	60296 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1h80__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1h80__assembly_2__model_1`	monomeric （1）	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 (6)

Entity 1 Entity 1 polymer

Description description	IOTA-CARRAGEENASE
Molecular weight formula_weight	51936.1 kDa
EC 编号 ec_number	3.2.1.157
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	7992

VSPKTYKDADFYVAPTQQDVNYDLVDDFGANGNDTSDDSNALQRAINAISRKPNGGTLLIPNGTYHFLGIQMKSNVHIRVESDVIIKPTWNGDGKNHRLFEVGVNNIVRNFSFQGLGNGFLVDFKDSRDKNLAVFKLGDVRNYKISNFTIDDNKTIFASILVDVTERNGRLHWSRNGIIERIKQNNALFGYGLIQTYGADNILFRNLHSEGGIALRMETDNLLMKNYKQGGIRNIFADNIRCSKGLAAVMFGPHFMKNGDVQVTNVSSVSCGSAVRSDSGFVELFSPTDEVHTRQSWKQAVESKLGRGCAQTPYARGNGGTRWAARVTQKDACLDKAKLEYGIEPGSFGTVKVFDVTARFGYNADLKQDQLDYFSTSNPMCKRVCLPTKEQWSKQGQIYIGPSLAAVIDTTPETSKYDYDVKTFNVKRINFPVNSHKTIDTNTESSRVCNYYGMSECSSSRWER

Source Source

Source organism organism	ALTEROMONAS SP. ATCC43554
NCBI taxonomy ID ncbi_taxonomy_id	116059
Host organism host_organism	ESCHERICHIA COLI B

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	6

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	SODIUM ION
Molecular weight formula_weight	23.0 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 5 Entity 5 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	1110

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1h80a_
Class class	b — All beta proteins
Fold Fold fold	b.80 — Single-stranded right-handed beta-helix
Superfamily Superfamily superfamily	b.80.1 — Pectin lyase-like
Family Family family	b.80.1.8 — iota-carrageenase

Domain ID domain_id	d1h80b_
Class class	b — All beta proteins
Fold Fold fold	b.80 — Single-stranded right-handed beta-helix
Superfamily Superfamily superfamily	b.80.1 — Pectin lyase-like
Family Family family	b.80.1.8 — iota-carrageenase

CATH v4.4 (2 domains)

Domain ID domain_id	1h80A00
Class class	2 — Mainly Beta
Architecture architecture	160 — 3 Solenoid
Topology topology	20 — Pectate Lyase C-like
Homologous superfamily homologous superfamily	10 — Single-stranded right-handed beta-helix, Pectin lyase-like

Domain ID domain_id	1h80B00
Class class	2 — Mainly Beta
Architecture architecture	160 — 3 Solenoid
Topology topology	20 — Pectate Lyase C-like
Homologous superfamily homologous superfamily	10 — Single-stranded right-handed beta-helix, Pectin lyase-like

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Unit-cell length a length_a	55.870 Å
Unit-cell length b length_b	90.070 Å
Unit-cell length c length_c	124.120 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	93.53 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.600 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2070
R_work r_work	0.2070
R_free r_free	0.2230

1,3-ALPHA-1,4-BETA-D-GALACTOSE-4-SULFATE- 3,6-ANHYDRO-D-GALACTOSE-2-SULFATE 4 GALACTOHYDROLASE

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

IOTA-CARRAGEENASE

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

1h80__assembly_2__model_1

1h80__assembly_2__model_1 | I(q)

1h80__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)

1,3-ALPHA-1,4-BETA-D-GALACTOSE-4-SULFATE- 3,6-ANHYDRO-D-GALACTOSE-2-SULFATE 4 GALACTOHYDROLASE

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

IOTA-CARRAGEENASE

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

1h80__assembly_2__model_1

1h80__assembly_2__model_1 | I(q)

1h80__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)