← Back to search
2kxx

NMR Structure of Escherichia coli BamE, a Lipoprotein Component of the beta-Barrel Assembly Machinery Complex

Method: SOLUTION NMR Dmax: 66.3 Å Quality: REASONABLE
▼

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

Small protein A

Escherichia coli K-12

UniProt P0A937

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count Chain A； UniProt 21–113 Not recorded No other associated polymer SOLUTION NMR NMR measurement conditions：pH 6.6；288 K；Ionic strength (raw mmCIF value) 0.02；Pressure ambient NMR sample composition：0.5 mM [U-100% 13C; U-100% 15N] E. coli protein, 15 % D2O, 85 % H2O, 20 mM Na2HPO4/NaH2PO4, 85% H2O/15% D2O | 85% H2O/15% D2O Resolution not provided

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 2KXX Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
2KM7 Solution Structure of BamE, a component of the outer membrane protein assembly machinery in Escherichia coli Deposited 2009-07-24 Different construct Different mutation/modification Different experimental conditions Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 21–114（94 aa）
Mutation：C20S No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7；303 K；Pressure ambient
NMR sample composition 2.0 mM [U-100% 13C; U-100% 15N] BamE, 50 mM sodium phosphate, 50 mM sodium chloride, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
2YH9 Crystal structure of the dimeric BamE from E. coli Deposited 2011-04-27 Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric
Chain A 34–113（80 aa） Fragment：RESIDUES 34-113
Chain B 34–113（80 aa） Fragment：RESIDUES 34-113
Chain C 34–113（80 aa） Fragment：RESIDUES 34-113
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；30% PEG 4000, 10% I-PROH, 0.1 M HEPES PH 7.5
Resolution 1.80 Å R-free 0.229
5AYW Structure of a membrane complex Deposited 2015-09-14 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 20–113（94 aa） Fragment：UNP residues 20-113
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；289 K；Tris-HCl, NaCl, PEG 400
Resolution 3.56 Å R-free 0.314
5D0O BamABCDE complex, outer membrane beta barrel assembly machinery entire complex Deposited 2015-08-03 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；293 K；0.1 M HEPES, pH7.5, 30% PEG600, CYMAL-4
Resolution 2.90 Å R-free 0.304
5D0Q BamACDE complex, outer membrane beta-barrel assembly machinery (BAM) complex Deposited 2015-08-03 Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain E 2–113（112 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；297 K；0.1 M Tris, pH8.0, 0.1 M MgCl2, 24% PEG500 MME.
Resolution 3.50 Å R-free 0.340
5D0Q BamACDE complex, outer membrane beta-barrel assembly machinery (BAM) complex Deposited 2015-08-03 Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain I 2–113（112 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8；297 K；0.1 M Tris, pH8.0, 0.1 M MgCl2, 24% PEG500 MME.
Resolution 3.50 Å R-free 0.340
5EKQ The structure of the BamACDE subcomplex from E. coli Deposited 2015-11-04 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain E 20–113（94 aa） Fragment：UNP residues 20-113
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；294 K；100 mM Tris-HCl, pH 8.5, 200 mM MgCl2, 10 mM MnCl2, and 8% PEG 4000
Resolution 3.39 Å R-free 0.281
6LYQ Structure of the BAM complex Deposited 2020-02-15 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；289 K；27-30% PEG 400, 100mM NaCl
Resolution 3.19 Å R-free 0.293
6LYR Structure of the BAM complex Deposited 2020-02-15 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；289 K；27-30% PEG 400, 100mM NaCl
Resolution 3.28 Å R-free 0.280
6LYS Structure of the BAM complex Deposited 2020-02-15 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；289 K；27-30% PEG 400, 100mM NaCl
Resolution 3.05 Å R-free 0.284
6LYU Structure of the BAM complex Deposited 2020-02-15 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
7BNQ Lateral-closed conformation of the lid-locked BAM complex (BamA E435C S665C, BamBDCE) by cryoEM Deposited 2021-01-22 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
7NBX Lateral-open conformation of the lid-locked BAM complex (BamA E435C S665C, BamBDCE) by cryoEM Deposited 2021-01-28 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.80 Å
7NCS Lateral-open conformation of the lid-locked BAM complex (BamA E435C S665C, BamBDCE) bound by a bactericidal Fab fragment Deposited 2021-01-29 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.10 Å
7ND0 lateral-open conformation of the wild-type BAM complex (BamABCDE) bound to a bactericidal Fab fragment Deposited 2021-01-29 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.20 Å
7NRI Structure of the darobactin-bound E. coli BAM complex (BamABCDE) Deposited 2021-03-03 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；4microL of sample applied
Resolution 3.03 Å
7R1W E. coli BAM complex (BamABCDE) bound to dynobactin A Deposited 2022-02-03 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20 mM Tris pH 8.0, 150 mM NaCl, 0.05% (w/v) n-dodecyl Beta-D-maltopyranoside (DDM)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
7YE4 BAM-EspP complex structure with BamA-G431C and G781C/EspP-N1293C and A1043C mutations in nanodisc Deposited 2022-07-05 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8；20 mM Tris-HCl, pH 7.8, 150 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
7YE6 BAM-EspP complex structure with BamA-N427C/EspP-R1297C mutations in nanodisc Deposited 2022-07-05 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8；20 mM Tris-HCl, pH 7.8, 150 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8ADG Cryo-EM structure of Darobactin 22 bound BAM complex Deposited 2022-07-08 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.00 Å
8ADI Cryo-EM structure of Darobactin 9 bound BAM complex Deposited 2022-07-08 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.40 Å
8BNZ BAM-EspP complex structure with BamA-G431C/EspP-N1293C mutations in nanodisc Deposited 2022-11-14 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8BO2 BAM-EspP complex structure with BamA-S425C/EspP-S1299C mutations in nanodisc Deposited 2022-11-14 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8BVQ E. coli BAM complex (BamABCDE) bound to darobactin B Deposited 2022-12-05 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PZ1 Wait Complex: Lateral open BAM bound Compact SurA Deposited 2023-07-26 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PZ2 Wait Complex: Lateral open BAM bound Extended SurA Deposited 2023-07-26 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8PZU Wait Complex: BAM bound Darobactin-B and Compact SurA Deposited 2023-07-27 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8PZV Wait Complex: BAM bound Darobactin-B and Extended SurA Deposited 2023-07-27 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8Q0G Release Complex: BAM bound EspP and Compact SurA Deposited 2023-07-28 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8QN4 Structure of the BAM-EspP complex in an open EspP intermediate state Deposited 2023-09-25 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.36 Å
8QP5 Release Complex: BAM bound EspP (SurA released) Deposited 2023-09-29 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.40 Å
8QPU Release Complex: BAM bound EspP and Extended SurA Deposited 2023-10-03 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.20 Å
8QPV Handover Complex: BAM bound OmpX and extended SurA Deposited 2023-10-03 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 6 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.00 Å
8QPW Arrival Complex: Lateral open BAM bound extended SurA plus OmpX Deposited 2023-10-03 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.30 Å
9H85 BAM-hinge (GSGS) Deposited 2024-10-28 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
9H89 BAM-hinge (LVPR) suppressor (T434A) Deposited 2024-10-28 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.00 Å
9HE1 Structure of the Xenorceptide A2-bound E. coli BAM complex (BamABCDE) Deposited 2024-11-13 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7；25 mM NaPi, 100 mM NaCl, pH 7.0
cryo-EM vitrification conditions Cryogen ETHANE；3.5uL sample, blot time 3sec, Blotforce 1, Blot total 1,
Resolution 3.00 Å
9HG5 BAM-SurA complex in the swing-in state with full length BamC resolved Deposited 2024-11-19 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl, 150mM NaCl, 0.05% DDM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.82 Å
9HG6 BAM-SurA complex in the swing-in state Deposited 2024-11-19 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl, 150mM NaCl, 0.05% DDM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.73 Å
9HG7 BAM-SurA complex in the swing-out state Deposited 2024-11-19 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl, 150mM NaCl, 0.05% DDM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.83 Å
9HG8 BAM-SurA complex in the swing-out state with BamC resolved Deposited 2024-11-19 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl, 150mM NaCl, 0.05% DDM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
9HG9 BAM-SurA-darobactin complex in the swing-in state Deposited 2024-11-19 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl, 150mM NaCl, 0.05% DDM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.88 Å
9HGA BAM-SurA-darobactin complex in the swing-out state Deposited 2024-11-19 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCl, 150mM NaCl, 0.05% DDM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.62 Å
9MGE beta-barrel assembly machine from Escherichia coli in an early state of substrate assembly Deposited 2024-12-10 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
9MGF beta-barrel assembly machine from Escherichia coli in a middle state of substrate assembly Deposited 2024-12-10 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein–RNA Heteromer；Protein × 6 PDB declaration: heptameric
Chain E 20–113（94 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9MGG beta-barrel assembly machine from Escherichia coli in a late state of substrate assembly Deposited 2024-12-10 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
9P1U beta-barrel assembly machine from Escherichia coli in an late state of LptD assembly Deposited 2025-06-10 Different construct Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric
Chain E 1–113（113 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å

46 other PDB entries and 47 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SMPA_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 5–97； UniProt 21–113

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.

SAXS scattering curve SAXS Profile

SAXS profile for 2kxx

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2kxx
Download Download
▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id2kxx
Deposition date deposition_date2010-05-13
Structure title titleNMR Structure of Escherichia coli BamE, a Lipoprotein Component of the beta-Barrel Assembly Machinery Complex
Keywords keywordsE coli protein, lipoprotein, PROTEIN BINDING; PROTEIN BINDING
Experimental Method methodSOLUTION NMR
▼

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier17.06 Å
Radius of gyration Rg (electron density) rg_electron16.51 Å
Forward intensity I(0) i0687560000.00
Molecular weight molecular_weight213880.0 kDa
Excluded volume excluded_volume264770 ų
Envelope volume envelope_volume60200 ų
Hydration-shell volume shell_volume21665 ų
Envelope diameter envelope_diameter72.3 Å
Shell Rg shell_rg30.43 Å
Envelope Rg envelope_rg25.27 Å
Shape Rg shape_rg16.45 Å
Total Rg total_rg17.12 Å
Total atoms total_atoms29700
Residues n_residues1940
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 Å−1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3
▼

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax66.3 Å
Rg (real space) rg_real17.32 Å
Rg uncertainty (real space) rg_real_error0.66 Å
I(0) (real space) i0_real6.8760e+08
I(0) uncertainty (real space) i0_real_error9.8250e+06
Rg (reciprocal space) rg_reciprocal17.29 Å
I(0) (reciprocal space) i0_reciprocal687500000.0000
Solution quality estimate total_estimate0.7386
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary15.7 Å
Skewness Skewness skewness0.704
Kurtosis Kurtosis kurtosis0.204
Angular range angular_range— – 0.4650 Å−1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha365500.0000
Real-space data points n_real_points77
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.445; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.289; Smooth: 0.974
▶

5. Crystallography and Experiment 5. Crystallography & Experiment

▶

6. Entities and Polymers Entities & Polymers (1)

▼

7. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id2kxxA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology1450 — Beta-lactamase Inhibitory Protein; Chain:B, domain 1
Homologous superfamily homologous superfamily10 —
▶

8. Citations (1)

▶

9. Files and Curves (10)