Dadrummond: initial protocol

Dadrummond — Sun, 22 Jul 2007 13:53:53 GMT

initial protocol

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==Introduction==
Ubiquitin is small; resolving it can be tricky. The following protocol is adapted from John Hanna in Dan Finley's lab.
==Protocol==
* Prepare logarithmically growing cells.
* Resuspend in 1X LLB at a concentration of 75 uL 1X LLB per 1 OD600 worth of cells.
* Boil 5 min
* Centrifuge briefly to pellet debris.
* Load 15 ul on 4-12% B/T gradient gel (Invitrogen); be sure to use MES buffer as this gives better resolution in the LMW range
* Wet transfer to PVDF for 1 hour at 250 mA (constant)
* Block 40 minutes
* Primary antibody: anti-ubiquitin polyclonal Ab (Biomol: UG9510) 1:2500 in TBS-T for 40 minutes (can re-use this antibody at least 5 times)
* Wash 4x5 min in TBS-T
* Secondary antibody: anti-rabbit IgG Ab 1:10000 in TBT-T for 40 minutes
* Wash 4x5 min in TBS-T
* Wash 1x1 min in water ECL
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Dadrummond: initial protocol