The defender - who has missed Newcastle United's last four games with a hamstring injury - is in Chris Hughton's starting XI for the Championship clash.
Elsewhere, Marlon Harewood returns to partner Andy Carroll up front, while Ryan Taylor - who scored a deflected winner at Sheffield United on Monday night - makes way for Danny Guthrie.
More news from St James's ParkJonas committed to Toon causeNolan happy to be a father figureToon small on numbers but big on spiritLeague leaders Newcastle need to beat Darren Ferguson's struggling side to guarantee they top the divison going into the two-week international break.
Peterborough, however, already beaten Hughton's side once this season, having knocked them out of the Carling Cup at the third-round stage at London Road in September.
NEWCASTLE UNITED: Harper; Simpson, S Taylor, Coloccini, Enrique; Guthrie, Nolan, Smith, Gutierrez; Carroll, Harewood. Subs: Krul, Kadar, R Taylor, Butt, Ranger, Lovenkrands,Geremi.For the first match report from St James's Park, log on to www.shieldsgazette.com after the game