sentence: It is now known that the DNA segment that is already in the prespore compartment when the asymmetric septum forms centres slightly to the left of oriC ( Fig. 1B ) ( Wu and Errington , 1998 ; Wu and Errington , 2002 ) , and that many factors are involved in ensuring correct chromosome configuration and establishing the interaction between the DNA segment and the cell pole , including sporulation ‐ specific RacA ( Ben ‐ Yehuda et al ., 2003 ; Wu and Errington , 2003 ) , and vegetatively expressed DivIVA ( Thomaides et al ., 2001 ; Perry and Edwards , 2004 ) , Spo0J ( ParB ) ( Sharpe and Errington , 1996 ; Wu and Errington , 2002 ) and Soj ( ParA ) ( Wu and Errington , 2002 ; Sullivan et al ., 2009 ) .