SAXSdb — 6b45

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

CRISPR-associated protein Csy1

Pseudomonas aeruginosa (strain UCBPP-PA14)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 9 RNA 1	CRISPR-associated protein Csy2 × 1 （Q02MM0） CRISPR-associated protein Csy3 × 6 （Q02MM1） CRISPR-associated endonuclease Cas6/Csy4 × 1 （Q02MM2） Pseudomonas aeruginosa strain SMC4485 CRISPR repeat sequence × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CSY1_PSEAB
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–436； UniProt 1–434

CRISPR-associated protein Csy2

Pseudomonas aeruginosa (strain UCBPP-PA14)

UniProt Q02MM0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 9 RNA 1	CRISPR-associated protein Csy1 × 1 （Q02ML9） CRISPR-associated protein Csy3 × 6 （Q02MM1） CRISPR-associated endonuclease Cas6/Csy4 × 1 （Q02MM2） Pseudomonas aeruginosa strain SMC4485 CRISPR repeat sequence × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CSY2_PSEAB
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 3–329； UniProt 1–327

CRISPR-associated protein Csy3

Pseudomonas aeruginosa (strain UCBPP-PA14)

UniProt Q02MM1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 9 RNA 1	CRISPR-associated protein Csy1 × 1 （Q02ML9） CRISPR-associated protein Csy2 × 1 （Q02MM0） CRISPR-associated endonuclease Cas6/Csy4 × 1 （Q02MM2） Pseudomonas aeruginosa strain SMC4485 CRISPR repeat sequence × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CSY3_PSEAB
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 3–344； UniProt 1–342 Author chain D； PDBConstruct 3–344； UniProt 1–342 Author chain E； PDBConstruct 3–344； UniProt 1–342 Author chain F； PDBConstruct 3–344； UniProt 1–342 Author chain G； PDBConstruct 3–344； UniProt 1–342 Author chain H； PDBConstruct 3–344； UniProt 1–342

CRISPR-associated endonuclease Cas6/Csy4

Pseudomonas aeruginosa (strain UCBPP-PA14)

UniProt Q02MM2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 9 RNA 1	CRISPR-associated protein Csy1 × 1 （Q02ML9） CRISPR-associated protein Csy2 × 1 （Q02MM0） CRISPR-associated protein Csy3 × 6 （Q02MM1） Pseudomonas aeruginosa strain SMC4485 CRISPR repeat sequence × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CAS6_PSEAB
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain L； PDBConstruct 3–189； UniProt 1–187

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	6b45
Deposition date deposition_date	2017-09-25
Structure title title	Cryo-EM structure of Type I-F CRISPR crRNA-guided Csy surveillance complex
Keywords keywords	CRISPR-Cas, IMMUNE SYSTEM - RNA complex; IMMUNE SYSTEM / RNA
Experimental Method method	ELECTRON MICROSCOPY

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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.

6b45__assembly_1__model_1

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

Download this curve (.dat)

6b45__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6b45__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	49.75 Å
Rg (electron density)	48.90 Å
Total Rg	48.96 Å
Atom count	21547
Residues	2939
Excluded volume	368160 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6b45__assembly_1__model_1`	decameric （10）	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 (5)

Entity 1 Entity 1 polymer

Description description	CRISPR-associated protein Csy1
Molecular weight formula_weight	49338.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	21547

GSMTSPLPTPTWQELRQFIESFIQERLQGKLDKLQPDEDDKRQTLLATHRREAWLADAARRVGQLQLVTHTLKPIHPDARGSNLHSLPQAPGQPGLAGSHELGDRLVSDVVGNAAALDVFKFLSLQYQGKNLLNWLTEDSAEALQALSDNAEQAREWRQAFIGITTVKGAPASHSLAKQLYFPLPGSGYHLLAPLFPTSLVHHVHALLREARFGDAAKAAREARSRQESWPHGFSEYPNLAIQKFGGTKPQNISQLNNERRGENWLLPSLPPNWQRQNVNAPMRHSSVFEHDFGRTPEVSRLTRTLQRFLAKTVHNNLAIRQRRAQLVAQICDEALQYAARLRELEPGWSATPGCQLHDAEQLWLDPLRAQTDETFLQRRLRGDWPAEVGNRFANWLNRAVSSDSQILGSPEAAQWSQELSKELTMFKEILEDERD

Source Source

Source organism organism	Pseudomonas aeruginosa (strain UCBPP-PA14)
NCBI taxonomy ID ncbi_taxonomy_id	208963
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	CRISPR-associated protein Csy2
Molecular weight formula_weight	36446.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MAMSVTDPEALLLLPRLSIQNANAISSPLTWGFPSPGAFTGFVHALQRRVGISLDIELDGVGIVCHRFEAQISQPAGKRTKVFNLTRNPLNRDGSTAAIVEEGRAHLEVSLLLGVHGDGLDDHPAQEIARQVQEQAGAMRLAGGSILPWCNERFPAPNAELLMLGGSDEQRRKNQRRLTRRLLPGFALVSREALLQQHLETLRTTLPEATTLDALLDLCRINFEPPATSSEEEASPPDAAWQVRDKPGWLVPIPAGYNALSPLYLPGEVRNARDRETPLRFVENLFGLGEWLSPHRVAALSDLLWYHHAEPDKGLYRWSTPRFVEHAIA

Source Source

Source organism organism	Pseudomonas aeruginosa (strain UCBPP-PA14)
NCBI taxonomy ID ncbi_taxonomy_id	208963
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	CRISPR-associated protein Csy3
Molecular weight formula_weight	37781.5 kDa
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D,E,F,G,H

MAMSKPILSTASVLAFERKLDPSDALMSAGAWAQRDASQEWPAVTVREKSVRGTISNRLKTKDRDPAKLDASIQSPNLQTVDVANLPSDADTLKVRFTLRVLGGAGTPSACNDAAYRDKLLQTVATYVNDQGFAELARRYAHNLANARFLWRNRVGAEAVEVRINHIRQGEVARAWRFDALAIGLRDFKADAELDALAELIASGLSGSGHVLLEVVAFARIGDGQEVFPSQELILDKGDKKGQKSKTLYSVRDAAAIHSQKIGNALRTIDTWYPDEDGLGPIAVEPYGSVTSQGKAYRQPKQKLDFYTLLDNWVLRDEAPAVEQQHYVIANLIRGGVFGEAEEK

Source Source

Source organism organism	Pseudomonas aeruginosa (strain UCBPP-PA14)
NCBI taxonomy ID ncbi_taxonomy_id	208963
Host organism host_organism	Escherichia coli

Entity 4 Entity 4 polymer

Description description	CRISPR-associated endonuclease Cas6/Csy4
Molecular weight formula_weight	21629.8 kDa
EC 编号 ec_number	3.1.-.-
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L

MAMDHYLDIRLRPDPEFPPAQLMSVLFGKLHQALVAQGGDRIGVSFPDLDESRSRLGERLRIHASADDLRALLARPWLEGLRDHLQFGEPAVVPHPTPYRQVSRVQAKSNPERLRRRLMRRHDLSEEEARKRIPDTVARALDLPFVTLRSQSTGQHFRLFIRHGPLQVTAEEGGFTCYGLSKGGFVPWF

Source Source

Source organism organism	Pseudomonas aeruginosa (strain UCBPP-PA14)
NCBI taxonomy ID ncbi_taxonomy_id	208963
Host organism host_organism	Escherichia coli

Entity 5 Entity 5 polymer

Description description	Pseudomonas aeruginosa strain SMC4485 CRISPR repeat sequence
Molecular weight formula_weight	19265.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	M

CUAAGAAAUUCACGGCGGGCUUGAUGUCCGCGUCUACCUGGUUCACUGCCGUGUAGGCAG

Source Source

Source organism organism	Pseudomonas aeruginosa
NCBI taxonomy ID ncbi_taxonomy_id	287
Host organism host_organism	Escherichia coli

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

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

Resolution resolution	3.50 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	31488

Cryo-EM structure of Type I-F CRISPR crRNA-guided Csy surveillance complex

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

CRISPR-associated protein Csy1

State in the Current Structure

Other States of the Same Protein in the Database

CRISPR-associated protein Csy2

State in the Current Structure

Other States of the Same Protein in the Database

CRISPR-associated protein Csy3

State in the Current Structure

Other States of the Same Protein in the Database

CRISPR-associated endonuclease Cas6/Csy4

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

6b45__assembly_1__model_1

6b45__assembly_1__model_1 | I(q)

6b45__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 polymer

Polymer Polymer

Source Source

7. Citations (1)

Cryo-EM structure of Type I-F CRISPR crRNA-guided Csy surveillance complex

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

CRISPR-associated protein Csy1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CRISPR-associated protein Csy2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CRISPR-associated protein Csy3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CRISPR-associated endonuclease Cas6/Csy4

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

6b45__assembly_1__model_1

6b45__assembly_1__model_1 | I(q)

6b45__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 polymer

Polymer Polymer

Source Source

7. Citations (1)