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9ssh

PENICILLIN-BINDING PROTEIN 1B (PBP-1B) in complex with Ceftriaxone - Streptococcus pneumoniae R6

Method: X-RAY DIFFRACTION D_max: 87.6 Å Quality: GOOD

SAXS Profile

P(r) Distribution

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1. Structure Basics

entry_id	9ssh
deposition_date	2025-09-25
title	PENICILLIN-BINDING PROTEIN 1B (PBP-1B) in complex with Ceftriaxone - Streptococcus pneumoniae R6
keywords	CELL WALL, PEPTIDOGLYCAN SYNTHESIS ENZYME, INFECTION, DRUG-BINDING PROTEIN, ANTIBIOTICS, TRANSFERASE; 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	24.53 Å
rg_electron	23.83 Å
i0	47400200.00
molecular_weight	51049.0 kDa
excluded_volume	62672 Å³
envelope_volume	75086 Å³
shell_volume	26733 Å³
envelope_diameter	91.4 Å
shell_rg	30.79 Å
envelope_rg	24.58 Å
shape_rg	23.82 Å
total_rg	24.58 Å
total_atoms	3556
n_residues	454
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	87.6 Å
rg_real	24.60 Å
rg_real_error	0.88 Å
i0_real	4.7400e+07
i0_real_error	6.5580e+05
rg_reciprocal	24.59 Å
i0_reciprocal	47400000.0000
total_estimate	0.8382
solution_quality	GOOD a GOOD solution
n_peaks	2
r_peak_primary	27.8 Å
skewness	0.495
kurtosis	0.026
angular_range	— – 0.3250 Å⁻¹
current_alpha	0.0000
highest_alpha	8116000.0000
n_real_points	64
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.691; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.888; Smooth: 0.931

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4. Crystallography & Experiment

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5. Entities & Polymer Info (4)

Entity 1 polymer

description	Penicillin-binding protein 1B
formula_weight	54085.9 kDa
mutation	N656G, R686Q, R687Q
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	A
atom_count	4016

DISSISEITYSDGTVIASIESDMLRQDFLPSGTVTGISQDYLYFTTLAEAQERMYDYLAQRDNVSAKELKNEATQKFYRDLAAKEIENGGYKITTTIDQKIHSAMQSAVADYGYLLDDGTGRVEVGNVLMDNQTGAILGFVGGRNYQENQNNHAFDTKRSPASTTKPLLAYGIAIDQGLMGSETILSNYPTNFANGNPIMYANSKGTGMMTLGEALNYSWNIPAYWTYRMLRENGVDVKGYMEKMGYEIPEYGIESLPMGGGIEVTVAQHTNGYQTLANNGVYHQKHVISKIEAADGRVVYEYQDKPVQVYSKATATIMQGLLREVLSSRVTTTFKSNLTSLNPTLANADWIGKTGTTGQDENMWLMLSTPRLTLGGWIGHDDNHSLSQQAGYSNNSNYMAHLVNAIQQASPSIWGNERFALDPSVVKSEVLKSTGQKPGKVSVEGKEVEVTGSTVTSYWANKSGAPATSYRFAIGGSDADYQNAWSSIVGSLP

Source

organism	Streptococcus pneumoniae R6
ncbi_taxonomy_id	171101
host_organism	Escherichia coli BL21(DE3)

Entity 2 non-polymer

description	;CEFOTAXIME, C3' cleaved, open, bound form ;
formula_weight	397.4 kDa
src_method	syn
entity_count	1

Entity 3 non-polymer

description	CHLORIDE ION
formula_weight	35.5 kDa
src_method	syn
entity_count	24

Entity 4 water

description	water
formula_weight	18.0 kDa
src_method	nat
entity_count	428

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6. Citations (1)

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length_a	96.062 Å
length_b	148.577 Å
length_c	98.589 Å
angle_alpha	90.00 °
angle_beta	90.00 °
angle_gamma	90.00 °
z_pdb	8

space_group	C 2 2 21
int_tables_number	20
crystal_system	—

resolution	1.792 Å
resolution_low	44.020 Å
r_factor	—
r_work	0.1728
r_free	0.2050

fit	/app/data/saxs_computation/ss/9ssh/9ssh.fit
pddf	/app/data/pr_computation/ss/9ssh/9ssh.pr.out
profile	/app/data/saxs_computation/ss/9ssh/9ssh.dat

PENICILLIN-BINDING PROTEIN 1B (PBP-1B) in complex with Ceftriaxone - Streptococcus pneumoniae R6

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

Diffraction