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A central ubiquitin-like domain that acts as a binding site for Sgt2.

This article explores the structure, function, and significance of (also known as Mdy2 in yeast or Ubl4A in mammals) in ensuring protein homeostasis. 1. What is Get5?

Get3 delivers the cargo to the receptor complex Get1/Get2, which inserts the protein into the ER membrane. Get5 and Ribosome Binding A central ubiquitin-like domain that acts as a

Nascent TA proteins are captured from the ribosome by Hsp70 and loaded onto Sgt2.

This complex is part of a larger "pretargeting complex" that also includes the chaperone Sgt2. Get5 acts as a mediator, connecting Sgt2 to Get4 and, ultimately, to the Get3 ATPase. Key Structural Features of Get5 What is Get5

The primary role of Get5 is to facilitate the transfer of tail-anchored proteins from the chaperone Sgt2 to the Get3 ATPase. This is a vital step because hydrophobic TA proteins cannot exist safely in the aqueous cytosol, and Get5 ensures they are handed off without aggregating. The GET Pathway Sequence

Recent studies have shown that the Get4/5 complex, particularly through Get5, contacts the ribosome near the peptide exit tunnel. This positioning allows the complex to capture nascent TA proteins immediately after they emerge, highlighting its role in efficient, co-translational-like post-translational targeting. 3. The Consequences of Losing Get5 This complex is part of a larger "pretargeting

The GET pathway is highly conserved from yeast to humans, reflecting the universal challenge of membrane protein insertion. Get5 (Mdy2) forms a complex with Get4.