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2c03

GDP COMPLEX OF SRP GTPASE FFH NG DOMAIN

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

SIGNAL RECOGNITION PARTICLE PROTEIN

THERMUS AQUATICUS

UniProt O07347

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 GUANOSINE-5'-DIPHOSPHATE × 1 1,2-ETHANEDIOL × 1 1,4-DIETHYLENE DIOXIDE × 7 water × 1 Consistent with protein count
2 Protein monomer Monomer Protein 1 GUANOSINE-5'-DIPHOSPHATE × 1 1,2-ETHANEDIOL × 2 1,4-DIETHYLENE DIOXIDE × 7 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1ffh 1jpj 1jpn 1jpn 1ls1 1ng1 1o87 1o87 2c03 2c03 2c04 2c04

22 assemblies; showing the first 12

Homodimer
2ffh 2ffh 2ffh

3 assemblies

Homotetramer

None

Other homooligomers
2ffh 2ffh 2ffh 2ffh

4 assemblies

Heteromeric or nucleic-acid complex
1okk 1rj9 2cnw 2cnw 2cnw 2iy3 2j7p 2j7p 2xkv 3zn8

10 assemblies

View Construct and Data Evidence
UniProt name SRP54_THEAQ
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 2–297； UniProt 1–296 Author chain B； PDBConstruct 2–297； UniProt 1–296

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_id2c03
Deposition date deposition_date2005-08-25
Structure title titleGDP COMPLEX OF SRP GTPASE FFH NG DOMAIN
Keywords keywordsFFH, GMPPNP, GTP-BINDING, NG DOMAIN, RNA-BINDING, SIGNALING PROTEIN, SRP54 NUCLEOTIDE-BINDING, SIGNAL PROTEIN; SIGNALING PROTEIN
Experimental Method methodX-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.

2c03__assembly_2__model_1

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

Download this curve (.dat)

2c03__assembly_2__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2c03__assembly_2__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）22.93 Å
Rg (electron density)22.11 Å
Total Rg22.92 Å
Atom count4837
Residues297
Excluded volume42400 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2c03__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 2c03__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 (5)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd2c03a1
Class classa — All alpha proteins
Fold Fold folda.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamilya.24.13 — Domain of the SRP/SRP receptor G-proteins
Family Family familya.24.13.0 — automated matches
Domain ID domain_idd2c03a2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.10 — Nitrogenase iron protein-like
Domain ID domain_idd2c03b1
Class classa — All alpha proteins
Fold Fold folda.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamilya.24.13 — Domain of the SRP/SRP receptor G-proteins
Family Family familya.24.13.0 — automated matches
Domain ID domain_idd2c03b2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.10 — Nitrogenase iron protein-like

CATH v4.4 (4 domains)

Domain ID domain_id2c03A01
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily140 — SRP54, nucleotide-binding domain
Domain ID domain_id2c03A02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id2c03B01
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily140 — SRP54, nucleotide-binding domain
Domain ID domain_id2c03B02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
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7. Citations (1)