tetrad arrangement

Edge evidence

• two perpendicular division planes causes tetrad arrangement biolink:causes

  Two perpendicular division planes with incomplete daughter separation yield four-cell tetrads.

  • DOI:10.1038/ncomms4842 Two-plane division with incomplete daughter-cell separation yields four-cell tetrads.
• cell division enables tetrad arrangement RO:0002327

  Bacterial cell division underlies tetrad formation.

  • DOI:10.1128/MMBR.00001-06 Young treats the tetrad as a division-plane-determined coccal arrangement.
• FtsZ Z-ring assembly scaffolds division septum assembly

  FtsZ assembles into a Z-ring that scaffolds the divisome and initiates septation.

  • DOI:10.1042/bst20240956 FtsZ polymerizes into a Z-ring that scaffolds membrane-associated division factors, forming the divisome that drives septation.
• division septum assembly precedes daughter-cell splitting

  Septum assembly precedes the splitting step that physically separates daughter cells.

  • DOI:10.1042/bst20240956 After septation the cell splits into two daughter cells; splitting is a distinct, very fast step following septation.
• cell wall hydrolases (autolysins) mediates daughter-cell splitting

  Cell wall hydrolases/autolysins cleave septal peptidoglycan to drive rapid daughter-cell splitting.

  • DOI:10.1042/bst20240956 After septation the cell splits into two daughter cells very fast (within milliseconds) and requires the actions of cell wall hydrolases.
• daughter-cell splitting prevents tetrad arrangement RO:0002212

  Incomplete or delayed daughter-cell splitting after two-plane division leaves cells attached as four-cell tetrads.

  • DOI:10.1042/bst20240956 Tetrads arise when a spherical cell divides in one plane and then again in a perpendicular plane, producing four cells arranged as a square due to incomplete separation; failure to complete splitting yields the tetrad.