Streptococcus agalactiae capsule polymer length and attachment is determined by the proteins CpsABCD.
Toniolo C, Balducci E, Romano MR, Proietti D, Ferlenghi I, Grandi G, Berti F, Ros IM, Janulczyk R. J Biol Chem. 2015 Apr 10; 290(15):9521-32. Epub 2015 Feb 9.