from ms_deisotope.utils import _MappingOverAttributeProxy
from .cv import Term, TermSet
[docs]class DissociationMethod(Term):
"""Controlled vocabulary describing a dissociation process
"""
[docs] def is_supplemental(self):
"""Returns whether or not the dissociation process is
supplemental
Returns
-------
bool
"""
return "supplemental" in self.name
dissociation_methods = []
# [[[cog
# import cog
# from ms_deisotope.data_source.metadata.cv import render_list
# render_list('dissociation method', term_cls_name="DissociationMethod", writer=cog.out)
# ]]]
# CV Version: 4.1.95
dissociation_methods = TermSet([
DissociationMethod('collision-induced dissociation', 'MS:1000133',
('The dissociation of an ion after collisional excitation. The '
'term collisional-activated dissociation is not recommended.'),
'dissociation method',
['dissociation method']),
DissociationMethod('plasma desorption', 'MS:1000134',
('The ionization of material in a solid sample by bombarding '
'it with ionic or neutral atoms formed as a result of the '
'fission of a suitable nuclide, typically 252Cf. Synonymous '
'with fission fragment ionization.'),
'dissociation method',
['dissociation method']),
DissociationMethod('post-source decay', 'MS:1000135',
('A technique specific to reflectron time-of-flight mass '
'spectrometers where product ions of metastable transitions '
'or collision-induced dissociations generated in the drift '
'tube prior to entering the reflectron are m/z separated to '
'yield product ion spectra.'),
'dissociation method',
['dissociation method']),
DissociationMethod('surface-induced dissociation', 'MS:1000136',
('Fragmentation that results from the collision of an ion with '
'a surface.'),
'dissociation method',
['dissociation method']),
DissociationMethod('blackbody infrared radiative dissociation', 'MS:1000242',
('A special case of infrared multiphoton dissociation wherein '
'excitation of the reactant ion is caused by absorption of '
'infrared photons radiating from heated blackbody '
'surroundings, which are usually the walls of a vacuum '
'chamber. See also infrared multiphoton dissociation.'),
'dissociation method',
['dissociation method']),
DissociationMethod('electron capture dissociation', 'MS:1000250',
('A process in which a multiply protonated molecules interacts '
'with a low energy electrons. Capture of the electron leads '
'the liberation of energy and a reduction in charge state of '
'the ion with the production of the (M + nH) (n-1)+ odd '
'electron ion, which readily fragments.'),
'dissociation method',
['dissociation method']),
DissociationMethod('sustained off-resonance irradiation', 'MS:1000282',
('A technique associated with Fourier transform ion cyclotron '
'resonance (FT-ICR) mass spectrometry to carry out '
'ion/neutral reactions such as low-energy collision-induced '
'dissociation. A radio-frequency electric field of slightly '
'off-resonance to the cyclotron frequency of the reactant ion '
'cyclically accelerates and decelerates the reactant ion that '
"is confined in the Penning ion trap. The ion's orbit does "
'not exceed the dimensions of ion trap while the ion '
'undergoes an ion/neutral species process that produces a '
'high average translational energy for an extended time.'),
'dissociation method',
['dissociation method']),
DissociationMethod('low-energy collision-induced dissociation', 'MS:1000433',
('A collision-induced dissociation process wherein the '
'precursor ion has the translational energy lower than '
'approximately 1000 eV. This process typically requires '
'multiple collisions and the collisional excitation is '
'cumulative.'),
'dissociation method',
['dissociation method']),
DissociationMethod('photodissociation', 'MS:1000435',
('A process wherein the reactant ion is dissociated as a '
'result of absorption of one or more photons.'),
'dissociation method',
['dissociation method']),
DissociationMethod('electron transfer dissociation', 'MS:1000598',
('A process to fragment ions in a mass spectrometer by '
'inducing fragmentation of cations (e.g. peptides or '
'proteins) by transferring electrons from radical-anions." '
'[DOI:10.1073/pnas.0402700101, PMID:15210983'),
'dissociation method',
['dissociation method']),
DissociationMethod('pulsed q dissociation', 'MS:1000599',
('A process that involves precursor ion activation at high Q, '
'a time delay to allow the precursor to fragment, then a '
'rapid pulse to low Q where all fragment ions are trapped. '
'The product ions can then be scanned out of the ion trap and '
'detected.'),
'dissociation method',
['dissociation method']),
DissociationMethod('in-source collision-induced dissociation', 'MS:1001880',
('The dissociation of an ion as a result of collisional '
'excitation during ion transfer from an atmospheric pressure '
'ion source and the mass spectrometer vacuum.'),
'dissociation method',
['dissociation method']),
DissociationMethod('LIFT', 'MS:1002000',
("A Bruker's proprietary technique where molecular ions are "
'initially accelerated at lower energy, then collide with '
"inert gas in a collision cell that is then 'lifted' to high "
'potential. The use of inert gas is optional, as it could '
'lift also fragments provided by LID." '
'[DOI:10.1007/s00216-003-2057-0'),
'dissociation method',
['dissociation method']),
DissociationMethod('combined dissociation method', 'MS:1003181',
('Combination of two or more dissociation methods that are '
'known by a special term.'),
'dissociation method',
['dissociation method']),
DissociationMethod('negative electron transfer dissociation', 'MS:1003247',
('A process to fragment ions in a mass spectrometer by '
'inducing fragmentation of anions (e.g. peptides or proteins) '
'by transferring electrons to a radical-cation." '
'[DOI:10.1016/j.jasms.2005.01.015'),
'dissociation method',
['dissociation method']),
DissociationMethod('beam-type collision-induced dissociation', 'MS:1000422',
('A collision-induced dissociation process that occurs in a '
'beam-type collision cell.'),
'dissociation method',
['collision-induced dissociation', 'dissociation method']),
DissociationMethod('trap-type collision-induced dissociation', 'MS:1002472',
('A collision-induced dissociation process that occurs in a '
'trap-type collision cell.'),
'dissociation method',
['collision-induced dissociation', 'dissociation method']),
DissociationMethod('supplemental collision-induced dissociation', 'MS:1002679',
('The dissociation of an ion after supplemental collisional '
'excitation.'),
'dissociation method',
['collision-induced dissociation', 'dissociation method']),
DissociationMethod('infrared multiphoton dissociation', 'MS:1000262',
('Multiphoton ionization where the reactant ion dissociates as '
'a result of the absorption of multiple infrared photons.'),
'dissociation method',
['photodissociation', 'dissociation method']),
DissociationMethod('ultraviolet photodissociation', 'MS:1003246',
('Multiphoton ionization where the reactant ion dissociates as '
'a result of the absorption of multiple UV photons.'),
'dissociation method',
['photodissociation', 'dissociation method']),
DissociationMethod('electron-transfer/higher-energy collision dissociation', 'MS:1002631',
('Dissociation process combining electron-transfer '
'dissociation and higher-energy collision dissociation. It '
'combines ETD (reaction time) followed by HCD (activation '
'energy).'),
'dissociation method',
['combined dissociation method', 'dissociation method']),
DissociationMethod('electron-transfer/collision-induced dissociation', 'MS:1003182',
('Dissociation process combining electron-transfer '
'dissociation (ETD) and collision-induced dissociation (CID).'),
'dissociation method',
['combined dissociation method', 'dissociation method']),
DissociationMethod('higher energy beam-type collision-induced dissociation', 'MS:1002481',
('A collision-induced dissociation process wherein the '
'projectile ion has the translational energy higher than '
'approximately 1000 eV.'),
'dissociation method',
['beam-type collision-induced dissociation', 'collision-induced dissociation', 'dissociation method']),
DissociationMethod('supplemental beam-type collision-induced dissociation', 'MS:1002678',
('A supplemental collision-induced dissociation process that '
'occurs in a beam-type collision cell in addition to another '
'primary type of dissociation.'),
'dissociation method',
['beam-type collision-induced dissociation', 'collision-induced dissociation', 'dissociation method']),
])
# [[[end]]]
UnknownDissociation = DissociationMethod(
"unknown dissociation", None, None, 'dissociation method',
[u'dissociation method'])
dissociation_methods_map = {
"": UnknownDissociation,
None: UnknownDissociation,
UnknownDissociation.name: UnknownDissociation
}
method = None
for method in dissociation_methods:
dissociation_methods_map[method.name] = method
dissociation_methods_map[method.id] = method
del method
CID = dissociation_methods_map.get("collision-induced dissociation")
HCD = dissociation_methods_map.get("beam-type collision-induced dissociation")
ETD = dissociation_methods_map.get("electron transfer dissociation")
ECD = dissociation_methods_map.get("electron capture dissociation")
supplemental_term_map = {
dissociation_methods_map["beam-type collision-induced dissociation"]: dissociation_methods_map[
"supplemental beam-type collision-induced dissociation"],
dissociation_methods_map["collision-induced dissociation"]: dissociation_methods_map[
"supplemental collision-induced dissociation"]
}
supplemental_energy = "supplemental collision energy"
energy_terms = set([
"collision energy",
supplemental_energy,
"activation energy",
"collision energy ramp start",
"collision energy ramp end",
"percent collision energy ramp start",
"percent collision energy ramp end",
])
dissociation_methods_map.update({
'cad': CID,
'cid': CID,
"hcd": HCD,
"etd": ETD,
"ecd": ECD
})
ActivationInformation.dissociation_methods = dissociation_methods_map
__all__ = [
"ActivationInformation", "MultipleActivationInformation", "DissociationMethod",
"dissociation_methods", "UnknownDissociation", "dissociation_methods_map",
"CID", "HCD", "ETD", "ECD", "supplemental_energy", "supplemental_term_map",
"energy_terms"
]