Hans Schmitthenner

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Questions related from Hans Schmitthenner

Best method for growing rhodospirillum rubrum for production of bacteriochlorophyll a?

I would appreciate learning, what is the best method for growing rhodospirillum rubrum for production of bacteriochlorophyll a? Or are there other bacteria that would be preferred or recommended....

10 February 2024 9,187 0 View

Does anyone know what range of collision cell energies would be recommended for MS/MS analyhsis of a tetrapeptide like CCK-4 on an MD-Sciex MS/MS ?

I am trying to develop an experiment in a teaching lab on MS/MS but do not have too much experience with 2-D Mass Spec. Can anyone recommend a set of conditions to see the main fragments in order...

15 March 2023 3,183 3 View

Does anyone have a review article or reference describing the acid stability of SPE C-18 cartridges?

I am trying to find sources which describe the instability of C-18 columns and SPE cartridges. I know there are a few like X-bridge BEH that are more stable down to pH2. In our hands a regular...

04 March 2020 7,902 2 View

Do I need to protect Fmoc-Arg in solid phase peptide synthesis ?

Hi - There was a prior question on the deprotection of arginine (or d-arginine) protecting groups. Does anyone know of any groups on Arg which can be cleaved by relatively mild acid deprotection...

01 January 1970 929 2 View