SAXSdb — 4uyk

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

SIGNAL RECOGNITION PARTICLE 9 KDA PROTEIN

HOMO SAPIENS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 2 RNA 1	SIGNAL RECOGNITION PARTICLE 14 KDA PROTEIN × 1 （P37108） SRP RNA × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SRP09_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–85； UniProt 1–85

SIGNAL RECOGNITION PARTICLE 14 KDA PROTEIN

HOMO SAPIENS

UniProt P37108

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 2 RNA 1	SIGNAL RECOGNITION PARTICLE 9 KDA PROTEIN × 1 （P49458） SRP RNA × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SRP14_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–107； UniProt 1–107

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	4uyk
Deposition date deposition_date	2014-09-01
Structure title title	Crystal structure of a Signal Recognition Particle Alu domain in the elongation arrest conformation
Keywords keywords	SIGNALING PROTEIN, SIGNAL RECOGNITION PARTICLE, TRANSLATION, RNA, RNA FOLDING; SIGNALING 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.

4uyk__assembly_1__model_1

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

Download this curve (.dat)

4uyk__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4uyk__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.74 Å
Rg (electron density)	28.88 Å
Total Rg	29.29 Å
Atom count	4259
Residues	298
Excluded volume	65580 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4uyk__assembly_1__model_1`	trimeric （3）	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	SIGNAL RECOGNITION PARTICLE 9 KDA PROTEIN
Molecular weight formula_weight	10233.1 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	4265

MPQYQTWEEFSRAAEKLYLADPMKARVVLKYRHSDGNLCVKVTDDLVCLVYKTDQAQDVKKIEKFHSQLMRLMVAKEARNVTMET

Source Source

Source organism organism	HOMO SAPIENS
Common name common_name	HUMAN
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	SIGNAL RECOGNITION PARTICLE 14 KDA PROTEIN
Molecular weight formula_weight	12386.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MVLLESEQFLTELTRLFQKCRTSGSVYITLKKYDGRTKPIPKKGTVEGFEPADNKCLLRATDGKKKISTVVSSKEVNKFQMAYSNLLRANMDGLKKRDKKNKTKKTK

Source Source

Source organism organism	HOMO SAPIENS
Common name common_name	HUMAN
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 polymer

Description description	SRP RNA
Molecular weight formula_weight	43523.8 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	R

GGGGCUAGGCCGGGGGGUUCGGCGUCCCCUGUAACCGGAAACCGCCGAUAUGCCGGGGCCGAAGCCCGAGGGGCGGUUCCCGAAGCCGCCUCUGUAAGGAGGCGGUGGAGGGUUCCCACCCUCGGGCGUGCCUC

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	4uykA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	720 — Signal recognition particle alu RNA binding heterodimer, srp9/1
Homologous superfamily homologous superfamily	10 — Signal recognition particle alu RNA binding heterodimer, srp9/1

Domain ID domain_id	4uykB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	720 — Signal recognition particle alu RNA binding heterodimer, srp9/1
Homologous superfamily homologous superfamily	10 — Signal recognition particle alu RNA binding heterodimer, srp9/1

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Unit-cell length a length_a	100.860 Å
Unit-cell length b length_b	100.860 Å
Unit-cell length c length_c	197.470 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	8

Space group space_group	P 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	3.220 Å
Low-resolution limit resolution_low	89.820 Å
R factor r_factor	0.1936
R_work r_work	0.1916
R_free r_free	0.2331

Crystal structure of a Signal Recognition Particle Alu domain in the elongation arrest conformation

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

SIGNAL RECOGNITION PARTICLE 9 KDA PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

SIGNAL RECOGNITION PARTICLE 14 KDA PROTEIN

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

4uyk__assembly_1__model_1

4uyk__assembly_1__model_1 | I(q)

4uyk__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of a Signal Recognition Particle Alu domain in the elongation arrest conformation

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

SIGNAL RECOGNITION PARTICLE 9 KDA 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 14 KDA 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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

4uyk__assembly_1__model_1

4uyk__assembly_1__model_1 | I(q)

4uyk__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)