Y2H used to identify potential cGKIa binding proteins.
2.5 x 106 clones from human activated T cell library
Clone AL9 encoded the COOH terminal 181 amino acids of myosin
binding subunit of myosin phosphatase.  MBS is a 130 kD regulatory
subunit of PP1M that confers the specificity of PP1 for MLC and is the
site on PP1M that is regulated by rho kinase.
The COOH terminal 181 amino acids of MBS includes a leucine zipper
domain.
Surks et al, Science 1999 286:1583