A specific endpoint assay for ubiquitin. Rose et al., Proc Natl Acad Sci U S A. 1987. Simple endpoint assays for free ubiquitin (Ub) and for the Ub-activating enzyme are described. . - [Read A specific endpoint assay for ubiquitin.]
The protocol gives general considerations for the design of targeting vectors for transgenic mice. The protocol shares tips in the design of knock-out and knock-in vectors and some of their strategies for producing homologously recombined embryonic stem cells.