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1ca3

UNEXPECTED PH-DEPENDENT CONFORMATION OF HIS-64, THE PROTON SHUTTLE OF CARBONIC ANHYDRASE II.

Method: X-RAY DIFFRACTION D_max: 58.2 Å Quality: GOOD

SAXS Profile

P(r) Distribution

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1. Structure Basics

entry_id	1ca3
deposition_date	1991-11-18
title	UNEXPECTED PH-DEPENDENT CONFORMATION OF HIS-64, THE PROTON SHUTTLE OF CARBONIC ANHYDRASE II.
keywords	LYASE(OXO-ACID); LYASE(OXO-ACID)
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	18.62 Å
rg_electron	17.34 Å
i0	14593300.00
molecular_weight	28872.0 kDa
excluded_volume	36086 Å³
envelope_volume	40140 Å³
shell_volume	18895 Å³
envelope_diameter	59.3 Å
shell_rg	24.01 Å
envelope_rg	17.60 Å
shape_rg	17.32 Å
total_rg	18.41 Å
total_atoms	2031
n_residues	255
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	58.2 Å
rg_real	18.47 Å
rg_real_error	0.30 Å
i0_real	1.4590e+07
i0_real_error	1.8280e+05
rg_reciprocal	18.50 Å
i0_reciprocal	14590000.0000
total_estimate	0.8929
solution_quality	GOOD a GOOD solution
n_peaks	2
r_peak_primary	24.7 Å
skewness	0.041
kurtosis	-0.467
angular_range	— – 0.4250 Å⁻¹
current_alpha	0.0000
highest_alpha	1961000.0000
n_real_points	74
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.879; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.988

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4. Crystallography & Experiment

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5. Entities & Polymer Info (4)

Entity 1 polymer

description	CARBONIC ANHYDRASE II
formula_weight	29289.1 kDa
ec_number	4.2.1.1
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	A
atom_count	2143

MSHHWGYGKHNGPEHWHKDFPIAKGERQSPVDIDTHTAKYDPSLKPLSVSYDQATSLRILNNGHAFNVEFDDSQDKAVLKGGPLDGTYRLIQFHFHWGSLDGQGSEHTVDKKKYAAELHLVHWNTKYGDFGKAVQQPDGLAVLGIFLKVGSAKPGLQKVVDVLDSIKTKGKSADFTNFDPRGLLPESLDYWTYPGSLTTPPLLECVTWIVLKEPISVSSEQVLKFRKLNFNGEGEPEELMVDNWRPAQPLKNRQIKASFK

Source

organism	Homo sapiens
common_name	human
ncbi_taxonomy_id	9606

Entity 2 non-polymer

description	ZINC ION
formula_weight	65.4 kDa
src_method	syn
entity_count	1

Entity 3 non-polymer

description	MERCURY (II) ION
formula_weight	200.6 kDa
src_method	syn
entity_count	1

Entity 4 water

description	water
formula_weight	18.0 kDa
src_method	nat
entity_count	112

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6. Citations (1)

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length_a	42.700 Å
length_b	41.700 Å
length_c	73.000 Å
angle_alpha	90.00 °
angle_beta	104.60 °
angle_gamma	90.00 °
z_pdb	2

space_group	P 1 21 1
int_tables_number	4
crystal_system	—

resolution	2.300 Å
resolution_low	— Å
r_factor	0.1680
r_work	—
r_free	—

fit	/app/data/saxs_computation/ca/1ca3/1ca3.fit
pddf	/app/data/pr_computation/ca/1ca3/1ca3.pr.out
profile	/app/data/saxs_computation/ca/1ca3/1ca3.dat