SAXSdb — 2xz1

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

ACYL-[ACYL-CARRIER-PROTEIN] DESATURASE, CHLOROPLASTIC

RICINUS COMMUNIS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	ACYL CARRIER PROTEIN 1, CHLOROPLASTIC × 2 （P07854） FE (III) ION × 4 CALCIUM ION × 2 CACODYLATE ION × 2 (2R)-2,4-dihydroxy-3,3-dimethyl-N-{3-oxo-3-[(2-sulfanylethyl)amino]propyl}butanamide × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	STAD_RICCO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–363； UniProt 34–396 Author chain B； PDBConstruct 1–363； UniProt 34–396

ACYL CARRIER PROTEIN 1, CHLOROPLASTIC

SPINACIA OLERACEA

UniProt P07854

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	ACYL-[ACYL-CARRIER-PROTEIN] DESATURASE, CHLOROPLASTIC × 2 （P22337） FE (III) ION × 4 CALCIUM ION × 2 CACODYLATE ION × 2 (2R)-2,4-dihydroxy-3,3-dimethyl-N-{3-oxo-3-[(2-sulfanylethyl)amino]propyl}butanamide × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ACP1_SPIOL
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain C； PDBConstruct 1–82； UniProt 57–138 Author chain D； PDBConstruct 1–82； UniProt 57–138

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	2xz1
Deposition date deposition_date	2010-11-22
Structure title title	The Structure of the 2:2 (Fully Occupied) Complex Between Stearoyl Acyl Carrier Protein Desaturase from Ricinus Communis (Castor Bean) and Acyl Carrier Protein.
Keywords keywords	OXIDOREDUCTASE-LIPID BINDING PROTEIN COMPLEX; OXIDOREDUCTASE/LIPID 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.

2xz1__assembly_1__model_1

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

Download this curve (.dat)

2xz1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2xz1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	32.01 Å
Rg (electron density)	31.93 Å
Total Rg	32.42 Å
Atom count	6948
Residues	863
Excluded volume	123540 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2xz1__assembly_1__model_1`	tetrameric （4）	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	ACYL-[ACYL-CARRIER-PROTEIN] DESATURASE, CHLOROPLASTIC
Molecular weight formula_weight	41703.3 kDa
EC 编号 ec_number	1.14.19.2
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	6948

ASTLKSGSKEVENLKKPFMPPREVHVQVTHSMPPQKIEIFKSLDNWAEENILVHLKPVEKCWQPQDFLPDPASDGFDEQVRELRERAKEIPDDYFVVLVGDMITEEALPTYQTMLNTLDGVRDETGASPTSWAIWTRAWTAEENRHGDLLNKYLYLSGRVDMRQIEKTIQYLIGSGMDPRTENSPYLGFIYTSFQERATFISHGNTARQAKEHGDIKLAQICGTIAADEKRHETAYTKIVEKLFEIDPDGTVLAFADMMRKKISMPAHLMYDGRDDNLFDHFSAVAQRLGVYTAKDYADILEFLVGRWKVDKLTGLSAEGQKAQDYVCRLPPRIRRLEERAQGRAKEAPTMPFSWIFDRQVKL

Source Source

Source organism organism	RICINUS COMMUNIS
Common name common_name	CASTOR BEAN
NCBI taxonomy ID ncbi_taxonomy_id	3988
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	ACYL CARRIER PROTEIN 1, CHLOROPLASTIC
Molecular weight formula_weight	8924.9 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D

AKKETIDKVSDIVKEKLALGADVVVTADSEFSKLGADSLDTVEIVMNLEEEFGINVDEDKAQDISTIQQAADVIEGLLEKKA

Source Source

Source organism organism	SPINACIA OLERACEA
Common name common_name	SPINACH
NCBI taxonomy ID ncbi_taxonomy_id	3562
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 non-polymer

Description description	FE (III) ION
Molecular weight formula_weight	55.8 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 non-polymer

Description description	CACODYLATE ION
Molecular weight formula_weight	137.0 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 6 Entity 6 non-polymer

Description description	(2R)-2,4-dihydroxy-3,3-dimethyl-N-{3-oxo-3-[(2-sulfanylethyl)amino]propyl}butanamide
Molecular weight formula_weight	278.4 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	2xz1A00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	620 — Ribonucleotide Reductase, subunit A
Homologous superfamily homologous superfamily	20 — Ribonucleotide Reductase, subunit A

Domain ID domain_id	2xz1B00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	620 — Ribonucleotide Reductase, subunit A
Homologous superfamily homologous superfamily	20 — Ribonucleotide Reductase, subunit A

Domain ID domain_id	2xz1C00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1200 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 — ACP-like

Domain ID domain_id	2xz1D00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1200 — Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein; Chain A
Homologous superfamily homologous superfamily	10 — ACP-like

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Unit-cell length a length_a	76.404 Å
Unit-cell length b length_b	76.404 Å
Unit-cell length c length_c	403.372 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	16

Space group space_group	P 43 2 2
Space-group number int_tables_number	95
Crystal system crystal_system	—

Resolution resolution	3.350 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2115
R_work r_work	0.2093
R_free r_free	0.2545

The Structure of the 2:2 (Fully Occupied) Complex Between Stearoyl Acyl Carrier Protein Desaturase from Ricinus Communis (Castor Bean) and Acyl Carrier Protein.

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

ACYL-[ACYL-CARRIER-PROTEIN] DESATURASE, CHLOROPLASTIC

State in the Current Structure

Other States of the Same Protein in the Database

ACYL CARRIER PROTEIN 1, CHLOROPLASTIC

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

2xz1__assembly_1__model_1

2xz1__assembly_1__model_1 | I(q)

2xz1__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

The Structure of the 2:2 (Fully Occupied) Complex Between Stearoyl Acyl Carrier Protein Desaturase from Ricinus Communis (Castor Bean) and Acyl Carrier Protein.

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

ACYL-[ACYL-CARRIER-PROTEIN] DESATURASE, CHLOROPLASTIC

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

ACYL CARRIER PROTEIN 1, CHLOROPLASTIC

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

2xz1__assembly_1__model_1

2xz1__assembly_1__model_1 | I(q)

2xz1__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)