[Cell-biology] Re: Cytoplasmic marker enzyme (Plant)
(by satoru_uNospam At berkeley.edu)
Wed Dec 6 17:47:38 EST 2006
Did anybody respond to your query??
I just wanted to hear how you would think about argininosuccinate lyase as a
marker for cytoplasm in plants. You can assay argininosuccinate lyase
spectrometrically, too (no simple, though). In contrast, ornithine
carbamoyltransferase may be used as a plastid marker which has an easy
Just few thoughts.
Jana Hakenjos <jana.hakenjos At biologie.uni-freiburg.de> wrote:
> Dear all,
> I am isolating chloroplasts from Physcomitrella patens (a moss) via a
> Percoll density gradient. To test for contaminations from other
> compartments I want to measure enzyme activities. But I can't find a
> good candidate for the cytoplasm that fulfils following "requirements":
> - no isoenzyme(s) in plastids!!!!!
> - easy to measure- most preferable spectrometric
> - no radioactive assay
> My first try was alcohol dehydrogenase but I couldn't detect any
> activity- most likely it isn't expressed under my conditions.
> I am thankful for every hint!
> Thank you very much in advance,
> Jana Hakenjos
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