SAXSdb — 2xkv

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

SIGNAL RECOGNITION PARTICLE PROTEIN

ESCHERICHIA COLI

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 3 RNA 1	4.5S RNA × 1 SIGNAL RECOGNITION PARTICLE PROTEIN × 1 （P0AGD7） CELL DIVISION PROTEIN FTSY × 1 （P83749）	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SRP54_THEAQ
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–294； UniProt 1–294

SIGNAL RECOGNITION PARTICLE PROTEIN

OrganismNot specified

UniProt P0AGD7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 3 RNA 1	SIGNAL RECOGNITION PARTICLE PROTEIN × 1 （O07347） 4.5S RNA × 1 CELL DIVISION PROTEIN FTSY × 1 （P83749）	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SRP54_ECOLI
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–69； UniProt 329–430

CELL DIVISION PROTEIN FTSY

ESCHERICHIA COLI

UniProt P83749

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 3 RNA 1	SIGNAL RECOGNITION PARTICLE PROTEIN × 1 （O07347） 4.5S RNA × 1 SIGNAL RECOGNITION PARTICLE PROTEIN × 1 （P0AGD7）	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FTSY_THEAQ
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–303； UniProt 2–304

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	2xkv
Deposition date deposition_date	2010-07-13
Structure title title	Atomic Model of the SRP-FtsY Early Conformation
Keywords keywords	PROTEIN TRANSPORT; PROTEIN TRANSPORT
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.

2xkv__assembly_1__model_1

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

Download this curve (.dat)

2xkv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2xkv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	52.36 Å
Rg (electron density)	50.79 Å
Total Rg	51.10 Å
Atom count	6620
Residues	698
Excluded volume	111220 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2xkv__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 (4)

Entity 1 Entity 1 polymer

Description description	SIGNAL RECOGNITION PARTICLE PROTEIN
Molecular weight formula_weight	32300.4 kDa
EC 编号 ec_number	3.6.5.4
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	6620

MFQQLSARLQEAIGRLRGRGRITEEDLKATLREIRRALMDADVNLEVARDFVERVREEALGKQVLESLTPAEVILATVYEALKEALGGEARLPVLKDRNLWFLVGLQGSGKTTTAAKLALYYKGKGRRPLLVAADTQRPAAREQLRLLGEKVGVPVLEVMDGESPESIRRRVEEKARLEARDLILVDTAGRLQIDEPLMGELARLKEVLGPDEVLLVLDAMTGQEALSVARAFDEKVGVTGLVLTKLDGDARGGAALSARHVTGKPIYFAGVSEKPEGLEPFYPERLAGRILGM

Source Source

Source organism organism	ESCHERICHIA COLI
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	4.5S RNA
Molecular weight formula_weight	36856.9 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	B

GGGGGCUCUGUUGGUUCUCUGUGCUCUGUGCUCUGUUUACCAGGUCAGGUCCGAAAGGAAGCAGCCAAGGCAGAGACGCAGAGCAGGCAGAUGUAGCUGGCAGGGCCCCCACCC

Entity 3 Entity 3 polymer

Description description	SIGNAL RECOGNITION PARTICLE PROTEIN
Molecular weight formula_weight	8160.8 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

FDLNDFLEQKVLVRMEAIINSMTMKERAKPEIIKGSRKRRIAAGSGMQVQDVNRLLKQFDDMQRMMKKM

Entity 4 Entity 4 polymer

Description description	CELL DIVISION PROTEIN FTSY
Molecular weight formula_weight	32972.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

GFFDRLKAGLAKTRERLLKAIPWGGNLEEVLEELEMALLAADVGLSATEEILQEVRASGRKDLKEAVKEKLVGMLEPDERRATLRKLGFNPQKPKPVEPKGRVVLVVGVNGVGKTTTIAKLGRYYQNLGKKVMFCAGDTFRAAGGTQLSEWGKRLSIPVIQGPEGTDPAALAYDAVQAMKARGYDLLFVDTAGRLHTKHNLMEELKKVKRAIAKADPEEPKEVWLVLDAVTGQNGLEQAKKFHEAVGLTGVIVTKLDGTAKGGVLIPIVRTLKVPIKFVGVGEGPDDLQPFDPEAFVEALLED

Source Source

Source organism organism	ESCHERICHIA COLI
NCBI taxonomy ID ncbi_taxonomy_id	562
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	13.500 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	13.50 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	28822

Atomic Model of the SRP-FtsY Early Conformation

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

SIGNAL RECOGNITION PARTICLE PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

SIGNAL RECOGNITION PARTICLE PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

CELL DIVISION PROTEIN FTSY

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

2xkv__assembly_1__model_1

2xkv__assembly_1__model_1 | I(q)

2xkv__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

7. Citations (1)

Atomic Model of the SRP-FtsY Early Conformation

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

SIGNAL RECOGNITION PARTICLE PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

SIGNAL RECOGNITION PARTICLE PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CELL DIVISION PROTEIN FTSY

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

2xkv__assembly_1__model_1

2xkv__assembly_1__model_1 | I(q)

2xkv__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

7. Citations (1)