Crystal Structure of Spy0129, a Streptococcus pyogenes Class B Sortase Involved in Pilus Assembly Kang, Hae Joo ; Coulibaly, Fasséli ; Proft, Thomas ; Baker, Edward N. Abstract Publication: PLoS ONE Pub Date: January 2011 DOI: 10.1371/journal.pone.0015969 Bibcode: 2011PLoSO...615969K