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9yrx

Crystal structure of Cysteinyl-tRNA synthetase (CysRS) from Plasmodium falciparum in complex with Cysteine

Method: X-RAY DIFFRACTION D_max: 109.8 Å Quality: GOOD

SAXS Profile

P(r) Distribution

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1. Structure Basics

entry_id	9yrx
deposition_date	2025-10-17
last_revision	2025-11-05
title	Crystal structure of Cysteinyl-tRNA synthetase (CysRS) from Plasmodium falciparum in complex with Cysteine
keywords	;SSGCID, STRUCTURAL GENOMICS, SEATTLE STRUCTURAL GENOMICS CENTER FOR INFECTIOUS DISEASE, TRANSFERASE, Cysteinyl-tRNA synthetase, CysRS ;; TRANSFERASE
method	X-RAY DIFFRACTION

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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	32.32 Å
rg_electron	31.75 Å
i0	145003000.00
molecular_weight	100400.0 kDa
excluded_volume	126970 Å³
envelope_volume	148610 Å³
shell_volume	39812 Å³
envelope_diameter	117.2 Å
shell_rg	37.88 Å
envelope_rg	31.96 Å
shape_rg	31.77 Å
total_rg	32.18 Å
total_atoms	7093
n_residues	856
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	109.8 Å
rg_real	32.51 Å
rg_real_error	0.86 Å
i0_real	1.4500e+08
i0_real_error	1.9210e+06
rg_reciprocal	32.43 Å
i0_reciprocal	145000000.0000
total_estimate	0.8488
solution_quality	GOOD a GOOD solution
n_peaks	2
r_peak_primary	33.6 Å
skewness	0.497
kurtosis	-0.256
angular_range	— – 0.2450 Å⁻¹
current_alpha	0.0000
highest_alpha	35120000.0000
n_real_points	50
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.785; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.939; Smooth: 0.739

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4. Crystallography & Experiment

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5. Entities & Polymer Info (6)

Entity 1 polymer

description	Cysteine--tRNA ligase
formula_weight	54533.2 kDa
ec_number	6.1.1.16
src_method	man
entity_count	2

Polymer

type	polypeptide(L)
strand_id	A,B
atom_count	7313

MAHHHHHHMGTLEAQTQGPGSLPKWNQPSKEGKKITNLFVNNSLTHSKVEFIPQEGNKIKWYACGPTVYDAAHLGHARTYVSFDIIRRILVNYFKYDVFMVINITDIDDKIIKRSVEEKIGFTELARKWEYEFWEDMKSLNVLLPTAITRVSEYVGDIVKYIEKIIENKYAYVSEEGSVYFDIDEFKKSEKHFYARMEPLSVKDENKILEGEGDLGVISKKKKNAYDFALWKSSKPNEPHWDSPWGKGRPGWHIECSTMASNILGDVLDIHSGGIDLRFPHHDNELAQSEAFFDHSQWVNYFLHSGHLHIEGLKMSKSLKNFITIKNMLTKYTSNQIRILFLLNKWDNFMNYSPNGESMVQCIEIDKSFTNFFAIILMKIKNFDLNSCNLYWSDADNKLNLLFRQTKNKIHEHFLDNFNTPDALLAIQKLITEINIYMDKEKIQIGLLLEIKHYINFIFDTFGLIY

Source

organism	Plasmodium falciparum 3D7
ncbi_taxonomy_id	36329
host_organism	Escherichia coli BL21(DE3)

Entity 2 non-polymer

description	MALONATE ION
formula_weight	102.0 kDa
src_method	syn
entity_count	4

Entity 3 non-polymer

description	CYSTEINE
formula_weight	121.2 kDa
src_method	syn
entity_count	2

Entity 4 non-polymer

description	ZINC ION
formula_weight	65.4 kDa
src_method	syn
entity_count	2

Entity 5 non-polymer

description	SODIUM ION
formula_weight	23.0 kDa
src_method	syn
entity_count	4

Entity 6 water

description	water
formula_weight	18.0 kDa
src_method	nat
entity_count	212

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6. Citations (1)

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length_a	119.407 Å
length_b	119.407 Å
length_c	366.295 Å
angle_alpha	90.00 °
angle_beta	90.00 °
angle_gamma	120.00 °
z_pdb	24

space_group	P 61 2 2
int_tables_number	178
crystal_system	—

resolution	2.160 Å
resolution_low	49.760 Å
r_factor	0.1912
r_work	0.1900
r_free	0.2153

fit	/app/data/saxs_computation/yr/9yrx/9yrx.fit
pddf	/app/data/pr_computation/yr/9yrx/9yrx.pr.out
profile	/app/data/saxs_computation/yr/9yrx/9yrx.dat