# Pre-assembled complexes and allosteric effects: parallels between eukaryotic phosphorylation cascades and membrane fusion during herpesviral entry

## TL;DR

This paper explores how herpesviruses use pre-assembled protein complexes and allosteric effects during cell entry, similar to eukaryotic signaling processes.

## Contribution

The paper introduces a novel analogy between herpesviral entry and eukaryotic phosphorylation cascades, emphasizing pre-assembled complexes and allosteric signaling.

## Key findings

- Herpesvirus entry proteins may form complexes throughout fusion.
- Allosteric effects may transmit activating signals during viral entry.
- The model suggests pre-assembled complexes play a role in signal transmission.

## Abstract

Unlike most enveloped viruses, Herpesviridae distribute cell entry functions across several viral envelope proteins. The prevailing model posits that, upon interaction with the target cell, the activating signal is transmitted from the receptor-binding to the fusion-mediating component in a signaling cascade that involves sequential interactions. However, herpesvirus entry proteins may form complexes throughout fusion. Here, we propose that—by analogy with certain eukaryotic signaling cascades—transmission of the activating signal involves pre-assembled complexes and allosteric effects.