+------------------SUBJ:V-N-----------------+------------------------COMP_of:V-N-----------------------+                                  
                +---------------------------------SUBJ:V-N---------------------------------+              +------------COMP_of:N-N-----------+        +---------------MOD_ATT:V-V--------------+                 +---------COMP_of:N-N--------+     
                +-----------COMP_of:N-N-----------+---------COMP_from:N-N---------+        |              +------COMP_of:N-N-----+           |        +-----MOD:V-ADV----+                     +-----OBJ:V-N-----+            +--MOD_ATT:N-N--+     
     +MOD_ATT:N-+           +MOD_AT+MOD_A+MOD_ATT:+                  +-MOD_ATT:N-N+        |              +-COMP_of:N-N+         |           |        +MOD:V-AD+         +COMP_of:ADV+         |          +MOD_AT+            |        +MOD_AT+     
     |          |           |      |     |        |                  |            |        |              |            |         |           |        |        |         |           |         |          |      |            |        |      |     
Phylogenetic analyses of various sigma factor sequences from endospore-forming bacteria revealed that homologues of GENEXXX , GENEXXX and GENEXXX clustered together regardless of genus , suggesting a common origin of sporulation sigma factors .
COMP_of:N-N (homologues,GENEXXX)
SUBJ:V-N (revealed,analyses)
MOD_ATT:N-ADJ (origin,common)
MOD_ATT:N-N (factor,sigma)
MOD_ATT:N-N (bacteria,endospore-forming)
COMP_of:N-N (analyses,sequences)
MOD_ATT:N-N (sequences,factor)
COMP_of:N-N (homologues,GENEXXX)
MOD_ATT:N-ADJ (analyses,Phylogenetic)
MOD_ATT:N-N (factors,sporulation)
MOD_ATT:N-ADJ (sigma,various)
SUBJ:V-N (clustered,homologues)
OBJ:V-N (suggesting,origin)
COMP_of:V-N (clustered,origin)
COMP_from:N-N (sequences,bacteria)
MOD_ATT:N-N (factors,sigma)
MOD:V-ADV (clustered,together)
COMP_of:N-N (homologues,GENEXXX)
COMP_of:N-N (origin,factors)
MOD:V-ADV (clustered,regardless)
COMP_of:ADV-N (regardless,genus)
MOD_ATT:V-V (clustered,suggesting)