SAXSdb — 7ttc

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

Outer membrane protein assembly factor BamB

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Outer membrane protein assembly factor BamA × 1 （C3TPJ2） Outer membrane protein assembly factor BamE × 1 （A0A3L5AP29） Outer membrane protein assembly factor BamD × 1 （A0A1X3I1M6） Outer membrane protein assembly factor BamC × 1 （W8SZY2） Serine protease EspP × 1 （Q7BSW5） 2,3-dideoxy-6-O-[2-deoxy-4-O-phosphono-2-(tetradecanoylamino)-alpha-L-gulopyranosyl]-1-O-phosphono-beta-D-threo-hexopyranose × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BAMB_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain B； PDBConstruct 1–373； UniProt 20–392

Outer membrane protein assembly factor BamA

Escherichia coli

UniProt C3TPJ2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Outer membrane protein assembly factor BamB × 1 （P77774） Outer membrane protein assembly factor BamE × 1 （A0A3L5AP29） Outer membrane protein assembly factor BamD × 1 （A0A1X3I1M6） Outer membrane protein assembly factor BamC × 1 （W8SZY2） Serine protease EspP × 1 （Q7BSW5） 2,3-dideoxy-6-O-[2-deoxy-4-O-phosphono-2-(tetradecanoylamino)-alpha-L-gulopyranosyl]-1-O-phosphono-beta-D-threo-hexopyranose × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3TPJ2_ECOLX
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 12–800； UniProt 22–810

Outer membrane protein assembly factor BamE

Escherichia coli

UniProt A0A3L5AP29

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Outer membrane protein assembly factor BamB × 1 （P77774） Outer membrane protein assembly factor BamA × 1 （C3TPJ2） Outer membrane protein assembly factor BamD × 1 （A0A1X3I1M6） Outer membrane protein assembly factor BamC × 1 （W8SZY2） Serine protease EspP × 1 （Q7BSW5） 2,3-dideoxy-6-O-[2-deoxy-4-O-phosphono-2-(tetradecanoylamino)-alpha-L-gulopyranosyl]-1-O-phosphono-beta-D-threo-hexopyranose × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A3L5AP29_ECOLX
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain E； PDBConstruct 1–94； UniProt 20–113

Outer membrane protein assembly factor BamD

Escherichia coli

UniProt A0A1X3I1M6

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Outer membrane protein assembly factor BamB × 1 （P77774） Outer membrane protein assembly factor BamA × 1 （C3TPJ2） Outer membrane protein assembly factor BamE × 1 （A0A3L5AP29） Outer membrane protein assembly factor BamC × 1 （W8SZY2） Serine protease EspP × 1 （Q7BSW5） 2,3-dideoxy-6-O-[2-deoxy-4-O-phosphono-2-(tetradecanoylamino)-alpha-L-gulopyranosyl]-1-O-phosphono-beta-D-threo-hexopyranose × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A1X3I1M6_ECOLX
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–226； UniProt 20–245

Outer membrane protein assembly factor BamC

Escherichia coli

UniProt W8SZY2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Outer membrane protein assembly factor BamB × 1 （P77774） Outer membrane protein assembly factor BamA × 1 （C3TPJ2） Outer membrane protein assembly factor BamE × 1 （A0A3L5AP29） Outer membrane protein assembly factor BamD × 1 （A0A1X3I1M6） Serine protease EspP × 1 （Q7BSW5） 2,3-dideoxy-6-O-[2-deoxy-4-O-phosphono-2-(tetradecanoylamino)-alpha-L-gulopyranosyl]-1-O-phosphono-beta-D-threo-hexopyranose × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	W8SZY2_ECOLX
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain C； PDBConstruct 1–320； UniProt 25–344

Serine protease EspP

Escherichia coli

UniProt Q7BSW5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Outer membrane protein assembly factor BamB × 1 （P77774） Outer membrane protein assembly factor BamA × 1 （C3TPJ2） Outer membrane protein assembly factor BamE × 1 （A0A3L5AP29） Outer membrane protein assembly factor BamD × 1 （A0A1X3I1M6） Outer membrane protein assembly factor BamC × 1 （W8SZY2） 2,3-dideoxy-6-O-[2-deoxy-4-O-phosphono-2-(tetradecanoylamino)-alpha-L-gulopyranosyl]-1-O-phosphono-beta-D-threo-hexopyranose × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ESPP_ECO57
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain P； PDBConstruct 1–275； UniProt 1024–1298

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	7ttc
Deposition date deposition_date	2022-02-01
Structure title title	BamABCDE bound to substrate EspP
Keywords keywords	membrane protein folding, membrane dynamics, outer membrane protein, BAM, beta-barrel, MEMBRANE PROTEIN; MEMBRANE PROTEIN
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.

7ttc__assembly_1__model_1

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

Download this curve (.dat)

7ttc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7ttc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	45.00 Å
Rg (electron density)	44.73 Å
Total Rg	44.93 Å
Atom count	20018
Residues	1300
Excluded volume	179930 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7ttc__assembly_1__model_1`	hexameric （6）	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 (7)

Entity 1 Entity 1 polymer

Description description	Outer membrane protein assembly factor BamB
Molecular weight formula_weight	39882.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B
Atom count atom_count	20018

CSLFNSEEDVVKMSPLPTVENQFTPTTAWSTSVGSGIGNFYSNLHPALADNVVYAADRAGLVKALNADDGKEIWSVSLAEKDGWFSKEPALLSGGVTVSGGHVYIGSEKAQVYALNTSDGTVAWQTKVAGEALSRPVVSDGLVLIHTSNGQLQALNEADGAVKWTVNLDMPSLSLRGESAPTTAFGAAVVGGDNGRVSAVLMEQGQMIWQQRISQATGSTEIDRLSDVDTTPVVVNGVVFALAYNGNLTALDLRSGQIMWKRELGSVNDFIVDGNRIYLVDQNDRVMALTIDGGVTLWTQSDLLHRLLTSPVLYNGNLVVGDSEGYLHWINVEDGRFVAQQKVDSSGFQTEPVAADGKLLIQAKDGTVYSITR

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 polymer

Description description	Outer membrane protein assembly factor BamA
Molecular weight formula_weight	89750.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A

AHHHHHHHHGGEGFVVKDIHFEGLQRVAVGAALLSMPVRTGDTVNDEDISNTIRALFATGNFEDVRVLRDGDTLLVQVKERPTIASITFSGNKSVKDDMLKQNLEASGVRVGESLDRTTIADIEKGLEDFYYSVGKYSASVKAVVTPLPRNRVDLKLVFQEGVSAEIQQINIVGNHAFTTDELISHFQLRDEVPWWNVVGDRKYQKQKLAGDLETLRSYYLDRGYARFNIDSTQVSLTPDKKGIYVTVNITEGDQYKLSGVEVSGNLAGHSAEIEQLTKIEPGELYNGTKVTKMEDDIKKLLGRYGYAYPRVQSMPEINDADKTVKLRVNVDAGNRFYVRKIRFEGNDTSKDAVLRREMRQMEGAWLGSDLVDQGKERLNRLGFFETVDTDTQRVPGSPDQVDVVYKVKERNTGCFNFGIGYGTESGVSFQAGVQQDNWLGTGYAVGINGTKNDYQTYAELSVTNPYFTVDGVSLGGRLFYNDFQADDADLSDYTNKSYGTDVTLGFPINEYNSLRAGLGYVHNSLSNMQPQVAMWRYLYSMGEHPSTSDQDNSFKTDDFTFNYGWTYNKLDRGYFPTDGSRVNLTGKVTIPGSDNEYYKVTLDTATYVPIDDDHKWVVLGRTRWGYGDGLGGKEMPFYENFYAGGSSTVRGFQSNTIGPKAVYFPHQASNYDPDYDYECATQDGAKDLCKSDDAVGGNAMAVASLEFITPTPFISDKYANSVRTSFFWDMGTVWDTNWDSSQYSGYPDYSDPSNIRMSAGIALQWMSPLGPLVFSYAQPFKKYDGDKAEQFQFNIGKTW

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 3 Entity 3 polymer

Description description	Outer membrane protein assembly factor BamE
Molecular weight formula_weight	10391.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

CSTLERVVYRPDINQGNYLTANDVSKIRVGMTQQQVAYALGTPLMSDPFGTNTWFYVFRQQPGHEGVTQQTLTLTFNSSGVLTNIDNKPALSGN

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 4 Entity 4 polymer

Description description	Outer membrane protein assembly factor BamD
Molecular weight formula_weight	25816.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

CSGSKEEVPDNPPNEIYATAQQKLQDGNWRQAITQLEALDNRYPFGPYSQQVQLDLIYAYYKNADLPLAQAAIDRFIRLNPTHPNIDYVMYMRGLTNMALDDSALQGFFGVDRSDRDPQHARAAFSDFSKLVRGYPNSQYTTDATKRLVFLKDRLAKYEYSVAEYYTERGAWVAVVNRVEGMLRDYPDTQATRDALPLMENAYRQMQMNAQAEKVAKIIAANSSNT

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 5 Entity 5 polymer

Description description	Outer membrane protein assembly factor BamC
Molecular weight formula_weight	34401.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

CSSDSRYKRQVSGDEAYLEAAPLAELHAPAGMILPVTSGDYAIPVTNGSGAVGKALDIRPPAQPLALVSGARTQFTGDTASLLVENGRGNTLWPQVVSVLQAKNYTITQRDDAGQTLTTDWVQWNRLDEDEQYRGRYQISVKPQGYQQAVTVKLLNLEQAGKPVADAASMQRYSTEMMNVISAGLDKSATDAANAAQNRASTTMDVQSAADDTGLPMLVVRGPFNVVWQRLPAALEKVGMKVTDSTRSQGNMAVTYKPLSDSDWQELGASDPGLASGDYKLQVGDLDNRSSLQFIDPKGHTLTQSQNDALVAVFQAAFSK

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 6 Entity 6 polymer

Description description	Serine protease EspP
Molecular weight formula_weight	30379.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	P

NLNKRMGDLRDINGEAGAWARIMSGTGSASGGFSDNYTHVQVGVDKKHELDGLDLFTGFTVTHTDSSASADVFSGKTKSVGAGLYASAMFDSGAYIDLIGKYVHHDNEYTATFAGLGTRDYSTHSWYAGAEAGYRYHVTEDAWIEPQAELVYGSVSGKQFAWKDQGMHLSMKDKDYNPLIGRTGVDVGKSFSGKDWKVTARAGLGYQFDLLANGETVLRDASGEKRIKGEKDSRMLMSVGLNAEIRDNVRFGLEFEKSAFGKYNVDNAVNANFRYCF

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 7 Entity 7 non-polymer

Description description	2,3-dideoxy-6-O-[2-deoxy-4-O-phosphono-2-(tetradecanoylamino)-alpha-L-gulopyranosyl]-1-O-phosphono-beta-D-threo-hexopyranose
Molecular weight formula_weight	679.6 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	7ttcA01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	310 — membrane protein fhac

Domain ID domain_id	7ttcE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1450 — Beta-lactamase Inhibitory Protein; Chain:B, domain 1
Homologous superfamily homologous superfamily	10 —

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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	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	3.60 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	150955

BamABCDE bound to substrate EspP

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

Outer membrane protein assembly factor BamB

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Outer membrane protein assembly factor BamA

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Outer membrane protein assembly factor BamE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Outer membrane protein assembly factor BamD

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Outer membrane protein assembly factor BamC

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Serine protease EspP

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

7ttc__assembly_1__model_1

7ttc__assembly_1__model_1 | I(q)

7ttc__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (7)

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

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 polymer

Polymer Polymer

Source Source

Entity 6 Entity 6 polymer

Polymer Polymer

Source Source

Entity 7 Entity 7 non-polymer

6. Fold Classification (SCOP + CATH) 2 domains