Figure 1. Cytosolic chaperones interact with newly synthesized signal-anchored proteins.
(A and B) In vitro translation reactions included yeast extracts without mRNA (Ø) or programmed with mRNA encoding HA-tagged variants of signal-anchored proteins (Msp1, Mcr1, Tom20, and Tom70), the tail-anchored protein Fis1, the β-barrel protein Porin, or, as a control, dihydrofolate reductase (DHFR). The reactions were subjected to a pull-down with anti-HA beads. Samples from the input (1%) and the eluates (100%) were analyzed by SDS-PAGE and immunodecoration with the indicated antibodies.