Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Braun's lipoprotein:

"

Lpp, along with another OmpA-like lipoprotein called Pal/OprL (P0A912), maintains the stability of the cell envelope by attaching the outer membrane to the cell wall.[1]