SAXSdb — 9z7b

▼

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

Serine protease pic autotransporter

Escherichia coli 042

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	Heavy chain of the fragment antigen binding domain of monoclonal antibody 40 × 1 Light chain of the fragment antigen binding domain of monoclonal antibody 40 × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PIC_ECO44
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–1040； UniProt 56–1095

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	9z7b
Deposition date deposition_date	2025-11-16
Structure title title	Cryo-EM structure of Protein involved in colonization (Pic) from Enteroaggregative Escherichia coli complexed with the fragment antigen binding domain of monoclonal antibody 40
Keywords keywords	PROTEASE, BETA-HELIX, SECRETED, MONOCLONAL ANTIBODY, HYDROLASE, HYDROLASE-IMMUNE SYSTEM complex; HYDROLASE/IMMUNE SYSTEM
Experimental Method method	ELECTRON MICROSCOPY

▼

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.

9z7b__assembly_1__model_1

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

Download this curve (.dat)

9z7b__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9z7b__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	42.28 Å
Rg (electron density)	42.39 Å
Total Rg	42.27 Å
Atom count	8203
Residues	1192
Excluded volume	143360 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9z7b__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Serine protease pic autotransporter
Molecular weight formula_weight	109896.4 kDa
EC 编号 ec_number	3.4.21.-
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	8203

GIVRSDIAYQIYRDFAENKGLFVPGANDIPVYDKDGKLVGRLGKAPMADFSSVSSNGVATLVSPQYIVSVKHNGGYRSVSFGNGKNTYSLVDRNNHPSIDFHAPRLNKLVTEVIPSAVTSEGTKANAYKYTERYTAFYRVGSGTQYTKDKDGNLVKVAGGYAFKTGGTTGVPLISDATIVSNPGQTYNPVNGPLPDYGAPGDSGSPLFAYDKQQKKWVIVAVLRAYAGINGATNWWNVIPTDYLNQVMQDDFDAPVDFVSGLGPLNWTYDKTSGTGTLSQGSKNWTMHGQKDNDLNAGKNLVFSGQNGAIILKDSVTQGAGYLEFKDSYTVSAESGKTWTGAGIITDKGTNVTWKVNGVAGDNLHKLGEGTLTINGTGVNPGGLKTGDGIVVLNQQADTAGNIQAFSSVNLASGRPTVVLGDARQVNPDNISWGYRGGKLDLNGNAVTFTRLQAADYGAVITNNAQQKSQLLLDLKAQDTNVSEPTIGNISPFGGTGTPGNLYSMILNSQTRFYILKSASYGNTLWGNSLNDPAQWEFVGMDKNKAVQTVKDRILAGRAKQPVIFHGQLTGNMDVAIPQVPGGRKVIFDGSVNLPEGTLSQDSGTLIFQGHPVIHASISGSAPVSLNQKDWENRQFTMKTLSLKDADFHLSRNASLNSDIKSDNSHITLGSDRAFVDKNDGTGNYVIPEEGTSVPDTVNDRSQYEGNITLNHNSALDIGSRFTGGIDAYDSAVSITSPDVLLTAPGAFAGSSLTVHDGGHLTALNGLFSDGHIQAGKNGKITLSGTPVKDTANQYAPAVYLTDGYDLTGDNAALEITRGAHASGDIHASAASTVTIGSDTPAELASAETAASAFAGSLLEGYNAAFNGAITGGRADVSMHNALWTLGGDSAIHSLTVRNSRISSEGDRTFRTLTVNKLDATGSDFVLRTDLKNADKINVTEKATGSDNSLNVSFMNNPAQGQALNIPLVTAPAGTSAEMFKAGTRVTGFSRVTPTLHVDTSGGNTKWILDGFKAEADKAAAAKADSFMNAGYKNFMTEVN

Source Source

Source organism organism	Escherichia coli 042
NCBI taxonomy ID ncbi_taxonomy_id	216592
Host organism host_organism	Escherichia coli 042

Entity 2 Entity 2 polymer

Description description	Heavy chain of the fragment antigen binding domain of monoclonal antibody 40
Molecular weight formula_weight	23757.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

QVQLQESGPGLVKPSETLSLTCTVSGASISSSSYYCIWVRQSPGKGLEWIGTTYYSGTTYHEPSLRSRVSISLDTSKNQFSLMLTSVTAADTARYYCAISYGWGSYVNHWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKRVEPKSCD

Source Source

Source organism organism	Homo sapiens
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Homo sapiens

Entity 3 Entity 3 polymer

Description description	Light chain of the fragment antigen binding domain of monoclonal antibody 40
Molecular weight formula_weight	23534.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

EIVLTQSPATLSLSPGERATLSCRASQIFGSDLAWYQHKPGQAPRLLIFNTSNRVTGTPARFSGSGSGTDFTLTINSLEPDDVAVYYCHQRSSWPSITFGQGTRLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC

Source Source

Source organism organism	Homo sapiens
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Homo sapiens

▶

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	triclinic

Resolution resolution	2.69 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	127391

Cryo-EM structure of Protein involved in colonization (Pic) from Enteroaggregative Escherichia coli complexed with the fragment antigen binding domain of monoclonal antibody 40

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

Serine protease pic autotransporter

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

9z7b__assembly_1__model_1

9z7b__assembly_1__model_1 | I(q)

9z7b__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 (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

Source Source

7. Citations (1)

Cryo-EM structure of Protein involved in colonization (Pic) from Enteroaggregative Escherichia coli complexed with the fragment antigen binding domain of monoclonal antibody 40

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

Serine protease pic autotransporter

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

9z7b__assembly_1__model_1

9z7b__assembly_1__model_1 | I(q)

9z7b__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 (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

Source Source

7. Citations (1)