2vda

Solution structure of the SecA-signal peptide complex

Method: SOLUTION NMR
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1. Protein Identity and Related Structures Protein Identity & Related Structures

TRANSLOCASE SUBUNIT SECA

ESCHERICHIA COLI

UniProt P10408

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 MALTOPORIN × 1 (Q8CVI4) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SECA_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–828; UniProt 9–836

MALTOPORIN

OrganismNot specified

UniProt Q8CVI4

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 TRANSLOCASE SUBUNIT SECA × 1 (P10408) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name LAMB_ECOL6
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–7; UniProt 1–7 Author chain B; PDBConstruct 11–28; UniProt 8–25

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_id2vda
Deposition date deposition_date2007-10-01
Structure title titleSolution structure of the SecA-signal peptide complex
Keywords keywords;SUGAR TRANSPORT, PROTEIN TRANSPORT, PROTEIN TARGETING, TRANSMEMBRANE, OUTER MEMBRANE, SIGNAL PEPTIDE, PARAMAGNETIC RELAXATION ENHANCEMENT, TRANSLOCASE, ION TRANSPORT, TRANSLOCATION, PROTEIN SECRETION, NUCLEOTIDE-BINDING, SECA, PORIN, MEMBRANE, TRANSPORT, ATP-BINDING, HIGH MOLECULAR WEIGHT COMPLEX ;; PROTEIN TRANSPORT
Experimental Method methodSOLUTION NMR
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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.

2vda__assembly_1__model_10

Assembly 1 · Model 10 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2vda__assembly_1__model_10 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2vda__assembly_1__model_10 | 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)35.19 Å
Rg (electron density)34.90 Å
Total Rg35.39 Å
Atom count12995
Residues856
Excluded volume120700 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2vda__assembly_1__model_1 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 2vda__assembly_1__model_2 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 2vda__assembly_1__model_3 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 2vda__assembly_1__model_4 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 2vda__assembly_1__model_5 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 2vda__assembly_1__model_6 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 2vda__assembly_1__model_7 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 2vda__assembly_1__model_8 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 2vda__assembly_1__model_9 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 2vda__assembly_1__model_10 dimeric (2) 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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id2vdaA01
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_id2vdaA02
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology1440 — Pre-protein croslinking domain of SecA
Homologous superfamily homologous superfamily10 — SecA, preprotein cross-linking domain
Domain ID domain_id2vdaA03
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_id2vdaA04
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3060 — Helical scaffold and wing domains of SecA
Homologous superfamily homologous superfamily10 — Helical scaffold and wing domains of SecA
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7. Citations (1)