The pair have helped the Gunners climb to the top of the Premier League table this season with a string of impressive performances at the back.
The North London club's defensive record is only bettered by Chelsea in the top flight, although they have kept the most clean sheets with 11 shutouts.
"I think we have shown a lot of people who criticised us a lot over the last two and a half years that we know each other much better now and that we complement each other well, so it looks like that's a good partnership," Mertesacker told Arsenal's official website.
"But I wouldn't say that's only us or the two of us. I think when I speak about our centre backs I want to include always Thomas Vermaelen because he's our captain and he's always vital for everyone. He's aware of situations, he gives us a boost, he came back from a heavy injury.
"The boss will rotate in the next couple of months and it's really important that we are all in good fitness and all in a good shape so we can continue our good form and good partnerships with the three of us."
Arsenal continue their Premier League campaign on Saturday when they make the trip to Liverpool.