SAXSdb — 9uj4

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1. Structure Basics

entry_id	9uj4
deposition_date	2025-04-16
title	Structure of human KCNQ1-CaM complex
keywords	Ion channal, MEMBRANE PROTEIN; MEMBRANE PROTEIN
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	41.24 Å
rg_electron	40.39 Å
i0	695751000.00
molecular_weight	226810.0 kDa
excluded_volume	287930 Å³
envelope_volume	393380 Å³
shell_volume	77419 Å³
envelope_diameter	123.0 Å
shell_rg	49.37 Å
envelope_rg	39.41 Å
shape_rg	40.37 Å
total_rg	40.93 Å
total_atoms	15968
n_residues	1972
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	123.3 Å
rg_real	40.96 Å
rg_real_error	0.69 Å
i0_real	6.9580e+08
i0_real_error	1.1230e+07
rg_reciprocal	41.24 Å
i0_reciprocal	696000000.0000
total_estimate	0.9002
solution_quality	EXCELLENT a EXCELLENT solution
n_peaks	1
r_peak_primary	51.9 Å
skewness	-0.002
kurtosis	-0.578
angular_range	— – 0.1900 Å⁻¹
current_alpha	0.0000
highest_alpha	45440000.0000
n_real_points	39
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.936; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.963; Smooth: 0.926

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4. Crystallography & Experiment

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5. Entities & Polymer Info (5)

Entity 1 polymer

description	Potassium voltage-gated channel subfamily KQT member 1
formula_weight	74800.5 kDa
src_method	man
entity_count	4

Polymer

type	polypeptide(L)
strand_id	A,G,E,C
atom_count	15968

MAAASSPPRAERKRWGWGRLPGARRGSAGLAKKCPFSLELAEGGPAGGALYAPIAPGAPGPAPPASPAAPAAPPVASDLGPRPPVSLDPRVSIYSTRRPVLARTHVQGRVYNFLERPTGWKCFVYHFAVFLIVLVCLIFSVLSTIEQYAALATGTLFWMEIVLVVFFGTEYVVRLWSAGCRSKYVGLWGRLRFARKPISIIDLIVVVASMVVLCVGSKGQVFATSAIRGIRFLQILRMLHVDRQGGTWRLLGSVVFIHRQELITTLYIGFLGLIFSSYFVYLAEKDAVNESGRVEFGSYADALWWGVVTVTTIGYGDKVPQTWVGKTIASCFSVFAISFFALPAGILGSGFALKVQQKQRQKHFNRQIPAAASLIQTAWRCYAAENPDSSTWKIYIRKAPRSHTLLSPSPKPKKSVVVKKKKFKLDKDNGVTPGEKMLTVPHITCDPPEERRLDHFSVDGYDSSVRKSPTLLEVSMPHFMRTNSFAEDLDLEGETLLTPITHISQLREHHRATIKVIRRMQYFVAKKKFQQARKPYDVRDVIEQYSQGHLNLMVRIKELQRRLDQSIGKPSLFISVSEKSKDRGSNTIGARLNRVEDKVTQLDQRLALITDMLHQLLSLHGGSTPGSGGPPREGGAHITQPCGSGGSVDPELFLPSNTLPTYEQLTVPRRGPDEGS

Source

organism	Homo sapiens
common_name	human
ncbi_taxonomy_id	9606
host_organism	Homo sapiens

Entity 2 polymer

description	Calmodulin-1
formula_weight	16852.5 kDa
src_method	man
entity_count	4

Polymer

type	polypeptide(L)
strand_id	B,H,F,D

MADQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGNGTIDFPEFLTMMARKMKDTDSEEEIREAFRVFDKDGNGYISAAELRHVMTNLGEKLTDEEVDEMIREADIDGDGQVNYEEFVQMMTAK

Source

organism	Homo sapiens
common_name	human
ncbi_taxonomy_id	9606
host_organism	Homo sapiens

Entity 3 non-polymer

description	POTASSIUM ION
formula_weight	39.1 kDa
src_method	syn
entity_count	4

Entity 4 non-polymer

description	1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE
formula_weight	790.1 kDa
src_method	syn
entity_count	4

Entity 5 non-polymer

description	CALCIUM ION
formula_weight	40.1 kDa
src_method	syn
entity_count	8

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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	2.59 Å
resolution_method	—
num_particles	245445

fit	/app/data/saxs_computation/uj/9uj4/9uj4.fit
pddf	/app/data/pr_computation/uj/9uj4/9uj4.pr.out
profile	/app/data/saxs_computation/uj/9uj4/9uj4.dat

Structure of human KCNQ1-CaM complex

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

EM 3D

5. Entities & Polymer Info (5)

Entity 1 polymer

Polymer

Source

Entity 2 polymer

Polymer

Source

Entity 3 non-polymer

Entity 4 non-polymer

Entity 5 non-polymer

6. Citations (1)

7. Files & Curves (10)

Files (7)

Curves (3)