SAXSdb — 9zwo

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1. Structure Basics

entry_id	9zwo
deposition_date	2026-01-03
title	High-resolution cryo-EM structure of KdpFABC in the E2 state in lipid nanodisc
keywords	P-type ATPase, potassium channel transporter pump, TRANSPORT PROTEIN; TRANSPORT 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	43.40 Å
rg_electron	42.94 Å
i0	321534000.00
molecular_weight	155100.0 kDa
excluded_volume	198000 Å³
envelope_volume	250740 Å³
shell_volume	52330 Å³
envelope_diameter	166.9 Å
shell_rg	43.53 Å
envelope_rg	43.78 Å
shape_rg	43.00 Å
total_rg	42.76 Å
total_atoms	10895
n_residues	1449
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	156.3 Å
rg_real	43.97 Å
rg_real_error	1.72 Å
i0_real	3.2150e+08
i0_real_error	5.3260e+06
rg_reciprocal	43.40 Å
i0_reciprocal	321300000.0000
total_estimate	0.7754
solution_quality	GOOD a GOOD solution
n_peaks	2
r_peak_primary	39.1 Å
skewness	0.664
kurtosis	-0.084
angular_range	— – 0.1800 Å⁻¹
current_alpha	0.0000
highest_alpha	40670000.0000
n_real_points	37
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.617; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.620; Smooth: 0.603

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4. Crystallography & Experiment

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5. Entities & Polymer Info (7)

Entity 1 polymer

description	Potassium-transporting ATPase potassium-binding subunit
formula_weight	59218.6 kDa
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	A
atom_count	10951

MAAQGFLLIATFLLVLMVLARPLGSGLARLINDIPLPGTTGVERVLFRALGVSDREMNWKQYLCAILGLNMLGLAVLFFMLLGQHYLPLNPQQLPGLSWDLALNTAVSFVTNTNWQSYSGETTLSYFSQMAGLTVQNFLSAASGIAVIFALIRAFTRQSMSTLGNAWVDLLRITLWVLVPVALLIALFFIQQGALQNFLPYQAVNTVEGAQQLLPMGPVASQEAIKMLGTNGGGFFNANSSHPFENPTALTNFVQMLAIFLIPTALCFAFGEVMGDRRQGRMLLWAMSVIFVICVGVVMWAEVQGNPHLLALGTDSSINMEGKESRFGVLVSSLFAVVTTAASCGAVIAMHDSFTALGGMVPMWLMQIGEVVFGGVGSGLYGMMLFVLLAVFIAGLMIGRTPEYLGKKIDVREMKLTALAILVTPTLVLMGAALAMMTDAGRSAMLNPGPHGFSEVLYAVSSAANNNGSAFAGLSANSPFWNCLLAFCMFVGRFGVIIPVMAIAGSLVSKKSQAASSGTLPTHGPLFVGLLIGTVLLVGALTFIPALALGPVAEYLS

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli K-12

Entity 2 polymer

description	Potassium-transporting ATPase ATP-binding subunit
formula_weight	72267.9 kDa
ec_number	7.2.2.6
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	B

MSRKQLALFEPTLVVQALKEAVKKLNPQAQWRNPVMFIVWIGSLLTTCISIAMASGAMPGNALFSAAISGWLWITVLFANFAEALAEGRSKAQANSLKGVKKTAFARKLREPKYGAAADKVPADQLRKGDIVLVEAGDIIPCDGEVIEGGASVDESAITGESAPVIRESGGDFASVTGGTRILSDWLVIECSVNPGETFLDRMIAMVEGAQRRKTPNEIALTILLIALTIVFLLATATLWPFSAWGGNAVSVTVLVALLVCLIPTTIGGLLSAIGVAGMSRMLGANVIATSGRAVEAAGDVDVLLLDKTGTITLGNRQASEFIPAQGVDEKTLADAAQLASLADETPEGRSIVILAKQRFNLRERDVQSLHATFVPFTAQSRMSGINIDNRMIRKGSVDAIRRHVEANGGHFPTDVDQKVDQVARQGATPLVVVEGSRVLGVIALKDIVKGGIKERFAQLRKMGIKTVMITGDNRLTAAAIAAEAGVDDFLAEATPEAKLALIRQYQAEGRLVAMTGDGTNDAPALAQADVAVAMNSGTQAAKEAGNMVDLDSNPTKLIEVVHIGKQMLMTRGSLTTFSIANDVAKYFAIIPAAFAATYPQLNALNIMCLHSPDSAILSAVIFNALIIVFLIPLALKGVSYKPLTASAMLRRNLWIYGLGGLLVPFIGIKVIDLLLTVCGLV

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli K-12

Entity 3 polymer

description	Potassium-transporting ATPase KdpC subunit
formula_weight	22299.2 kDa
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	C

MSGLRPALSTFIFLLLITGGVYPLLTTVLGQWWFPWQANGSLIREGDTVRGSALIGQNFTGNGYFHGRPSATAEMPYNPQASGGSNLAVSNPELDKLIAARVAALRAANPDASASVPVELVTASASGLDNNITPQAAAWQIPRVAKARNLSVEQLTQLIAKYSQQPLVKYIGQPVVNIVELNLALDKLDEGTGLVPRGSSHHHHHHHH

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli K-12

Entity 4 polymer

description	Potassium-transporting ATPase KdpF subunit
formula_weight	3071.7 kDa
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	D

MSAGVITGVLLVFLLLGYLVYALINAEAF

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli K-12

Entity 5 non-polymer

description	POTASSIUM ION
formula_weight	39.1 kDa
src_method	syn
entity_count	2

Entity 6 non-polymer

description	(2R)-3-(((2-aminoethoxy)(hydroxy)phosphoryl)oxy)-2-(palmitoyloxy)propyl (E)-octadec-9-enoate
formula_weight	718.0 kDa
src_method	syn
entity_count	2

Entity 7 water

description	water
formula_weight	18.0 kDa
src_method	nat
entity_count	56

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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	2.720 Å
resolution_low	— Å
r_factor	—
r_work	—
r_free	—

resolution	2.72 Å
resolution_method	—
num_particles	78696

fit	/app/data/saxs_computation/zw/9zwo/9zwo.fit
pddf	/app/data/pr_computation/zw/9zwo/9zwo.pr.out
profile	/app/data/saxs_computation/zw/9zwo/9zwo.dat

High-resolution cryo-EM structure of KdpFABC in the E2 state in lipid nanodisc

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 (7)

Entity 1 polymer

Polymer

Source

Entity 2 polymer

Polymer

Source

Entity 3 polymer

Polymer

Source

Entity 4 polymer

Polymer

Source

Entity 5 non-polymer

Entity 6 non-polymer

Entity 7 water

6. Citations (1)

7. Files & Curves (10)

Files (7)

Curves (3)