Carlsberg Laboratory
NMR center
Pulse sequence library
Coupling Constants in Proteins
TROSY Experiments
Hydrogen Bond Experiments
Small Molecules
Pulse Calibration
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CALIS for Bruker
Pulse programs
Procedure for calis1
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Start with a 1D HMQC parameterset rpar HMQC1D all
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Change pulse program to
calis1
pulprog calis1
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Set up the frequencies and decoupling and default pulselengths
Change decoupler offset
o2p to the offset of the X-nucleus to be calibrated.
o2p 98
Change/set the decoupler CPD program CPDPRG2.
CPDPRG2 garp
Set the pulse lengths to default values.
getprosol
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Set up the acquisition parameters
ased
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Set
cnst2 to 142 Hz or whatever your expect coupling constant,
and cnst31 to 18 or whatever your longest pulse will be.
Set the gradients up
gpz1 = 35.
gpz2 = -10.
gpz3 = 50.
gpz4 = 10.
p19 = 500 usec.
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Make sure the power for the decoupling scheme is suitable for
your system.
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Set the receiever gain as appropriate for the sample
rg.
rga
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Start the experiment and keep an eye on the amplifiers and
temperature of the sample. Process and phase the resulting
spectrum.
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Perform the calibration run using for example
popt see the manual page for popt for details
Procedure for calis2
-
Start with a 1D HMQC parameterset rpar HMQC1D all
-
Change pulse program to
calis2
pulprog calis2
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Set up the frequencies and decoupling and default pulselengths
Change decoupler offset
o2p to the offset of the X-nucleus to be calibrated.
o2p 98
Set the pulse lengths to default values.
getprosol
-
Set up the acquisition parameters
ased
-
Set
cnst2 to 142 Hz or whatever your expect coupling constant,
Set the gradients up
gpz1 = 25.
gpz2 = -10.
gpz3 = 50.
p19 = 500 usec.
-
Set the receiever gain as appropriate for the sample
rg.
rga
-
Start the experiment and keep an eye on the amplifiers and
temperature of the sample. Process and phase the resulting
spectrum.
-
Perform the calibration run using for example
popt see the manual page for popt for details
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