SAXSdb — 11sz

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1. Structure Basics

entry_id	11sz
deposition_date	2026-03-11
title	Antibody (1B2) Bound Rifamycin Synthetase Module 2
keywords	polyketide synthase, antibody, BIOSYNTHETIC PROTEIN-Immune System complex; BIOSYNTHETIC PROTEIN/Immune System
method	ELECTRON MICROSCOPY

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Download Data

SAXS curve (.dat) P(r) distribution (.pr.out) Structure (CIF)

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2. SAXS Parameters (CRYSOL)

rg_guinier	50.25 Å
rg_electron	50.60 Å
i0	773818000.00
molecular_weight	223610.0 kDa
excluded_volume	277650 Å³
envelope_volume	412720 Å³
shell_volume	73493 Å³
envelope_diameter	195.3 Å
shell_rg	48.87 Å
envelope_rg	50.16 Å
shape_rg	50.57 Å
total_rg	50.62 Å
total_atoms	15743
n_residues	2115
n_harmonics	20
q_range	— – 0.5000 Å⁻¹
n_points	101
shell_type	directional
solvent_density	0.3340 e/Å³
contrast_shell	0.0300 e/Å³
crysol_version	4.1.3

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3. P(r) Analysis (GNOM)

dmax	187.2 Å
rg_real	50.51 Å
rg_real_error	2.50 Å
i0_real	7.7380e+08
i0_real_error	1.6510e+07
rg_reciprocal	50.04 Å
i0_reciprocal	773300000.0000
total_estimate	0.7913
solution_quality	GOOD a GOOD solution
n_peaks	1
r_peak_primary	66.4 Å
skewness	0.605
kurtosis	0.491
angular_range	— – 0.1550 Å⁻¹
current_alpha	0.0000
highest_alpha	82770000.0000
n_real_points	32
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.585; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.851; Smooth: 0.676

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4. Crystallography & Experiment

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5. Entities & Polymer Info (3)

Entity 1 polymer

description	6-deoxyerythronolide-B synthase, Erythronolide synthase EryA2
formula_weight	115872.8 kDa
ec_number	2.3.1.94
src_method	man
entity_count	2

Polymer

type	polypeptide(L)
strand_id	A,B
atom_count	15743

MASTDSEKVAEYLRRATLDLRAARQRIRELEEEPIAIVAMACRFPGGVHSPEDLWRLVADGADAVTEFPADRGWDTDRLYHEDPDHEGTTYVRHGAFLDDAAGFDAAFFGISPNEALAMDPQQRLLLETSWELFERAAIDPTTLAGQDIGVFAGVNSHDYSMRMHRAAGVEGFRLTGGSASVLSGRVAYHFGVEGPAVTVDTACSSSLVALHMAVQALQRGECSMALAGGVMVMGTVETFVEFSRQRGLAPDGRCKAFADGADGTGWSEGVGLLLVERLSEAQRRGHQVLAVVRGSAVNSDGASNGLTAPNGPSQQRVIRKALAAAGLSTSDVDAVEAHGTGTTLGDPIEAEALLATYGQNRETPLWLGSVKSNLGHTQAAAGVAGVIKMVMAMRHGVLPRTLHVDRPSSYVDWSAGAVELLTEARDWVSNGHPRRAGVSSFGIGGTNAHVVLEEVAAPITTPQPEPAEFLVPVLVSARTAAGLRGQAGRLAAFLGDRTDVRVPDAAYALATTRAQLDHRAVVLASDRAQLCADLAAFGSGVVTGTPVDGKLAVLFTGQGSQWAGMGRELAETFPVFRDAFEAACEAVDTHLRERPLREVVFDDSALLDQTMYTQGALFAVETALFRLFESWGVRPGLLAGHSIGELAAAHVSGVLDLADAGELVAARGRLMQALPAGGAMVAVQATEDEVAPLLDGTVCVAAVNGPDSVVLSGTEAAVLAVADELAGRGRKTRRLAVSHAFHSPLMEPMLDDFRAVAERLTYRAGSLPVVSTLTGELAALDSPDYWVGQVRNAVRFSDAVTALGAQGASTFLELGPGGALAAMALGTLGGPEQSCVATLRKNGAEVPDVLTALAELHVRGVGVDWTTVLDEPATAVGTVLPTYAFQHQRFWVDVDETAAVSVTPPPAEPIVDRPVQDVLELVRESAAVVLGHRDAGSFDLDRSFKDHGFDSLSAVKLRNRLRDFTGVELPSTLIFDYPNPAVLADHLRAELLGEFAASPAVDIGDRLDELEKALEALSAEDGHDDVGQRLESLLRRWNSRRADAPSTSAISEDASDDELFSMLDQRFGGGEDLGNSSSVDKLAAALEHHHHHH

Source

organism	Amycolatopsis mediterranei
ncbi_taxonomy_id	33910
host_organism	Escherichia coli BL21(DE3)

Entity 2 polymer

description	1B2 Antibody Fragment (Fab) Heavy Chain
formula_weight	26447.6 kDa
src_method	man
entity_count	2

Polymer

type	polypeptide(L)
strand_id	C,H

MAEVQLVQSGGGLVQPGRSLRLSCTASGFTFGDYAMSWVRQAPGKGLEWVGFIRSKAYGGTTEYAASVKGRFTISRDDSKSIAYLQMNSLKTEDTAVYYCTRGGTLFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCAALVPRGSAHHHHHHAADYKDDDDKA

Source

organism	Homo sapiens
ncbi_taxonomy_id	9606
host_organism	Escherichia coli BL21(DE3)

Entity 3 polymer

description	1B2 Antibody Fragment (Fab) Light Chain
formula_weight	25715.8 kDa
src_method	man
entity_count	2

Polymer

type	polypeptide(L)
strand_id	D,L

LFAIPLVVPFYSHSALDVVMTQSPLSLPVTPGEPASISCRSSQSLLHSNGYNYLDWYLQKPGQSPQLLIYLGSNRASGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCMQSLQTPRLTFGPGTKVDIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPRGAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC

Source

organism	Homo sapiens
ncbi_taxonomy_id	9606
host_organism	Escherichia coli BL21(DE3)

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6. Citations (1)

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length_a	1.000 Å
length_b	1.000 Å
length_c	1.000 Å
angle_alpha	90.00 °
angle_beta	90.00 °
angle_gamma	90.00 °
z_pdb	—

space_group	P 1
int_tables_number	1
crystal_system	—

resolution	2.940 Å
resolution_low	— Å
r_factor	—
r_work	—
r_free	—

resolution	2.94 Å
resolution_method	—
num_particles	852885

fit	/app/data/saxs_computation/1s/11sz/11sz.fit
pddf	/app/data/pr_computation/1s/11sz/11sz.pr.out
profile	/app/data/saxs_computation/1s/11sz/11sz.dat

Antibody (1B2) Bound Rifamycin Synthetase Module 2

SAXS Profile

P(r) Distribution

1. Structure Basics

Download Data

2. SAXS Parameters (CRYSOL)

3. P(r) Analysis (GNOM)

4. Crystallography & Experiment

Unit Cell

Symmetry

Refinement

EM 3D

5. Entities & Polymer Info (3)

Entity 1 polymer

Polymer

Source

Entity 2 polymer

Polymer

Source

Entity 3 polymer

Polymer

Source

6. Citations (1)

7. Files & Curves (10)

Files (7)

Curves (3)