#11819 refinement of septin ring structures

[Valerie Wood]

GO:0032161 cleavage apparatus septin structure

has various descendents

GO:0000144 cellular bud neck septin ring
GO:0032169 prospore septin ring
GO:0032174 cellular bud neck septin collar
GO:0032177 cellular bud neck split septin rings
GO:0036391 medial cortex septin ring

and one of our cummunity selected

GO:0000144
cellular bud neck septin ring

which I would not have used. However, when I checked the def
A ring-shaped structure that forms at the site of cytokinesis; composed of members of the conserved family of filament forming proteins called septins as well as septin-associated proteins. In S. cerevisiae, this structure forms at the time of bud emergence and the septins show a high rate of exchange.
PMID:16009555

he is completely correct as this is true.

I have used
GO:0036391 medial cortex septin ring
but these two terms are both describing the same mitotic cytokinetic structure.

Should we merge them somehow?
mitotic septin ring
A ring-shaped structure that forms at the cortex at the site of mitotic cytokinesis; composed of members of the conserved family of filament forming proteins called septins as well as septin-associated proteins.

If we still need the medial and bud neck terms they could go under this term...and the bud neck term should be redefined to record its differences related to its different position?

We should also correct

GO:0036391 medial cortex septin ring
medial cortex septin ring
Definition A double ring-shaped structure that forms at the medial cortex at the onset of cytokinesis; composed of members of the conserved family of filament forming proteins called septins as well as septin-associated proteins.

to
medial cortex septin ring
Ontology Cellular Component
Definition A double ring-shaped structure that forms at the medial cortex at the onset of cytokinesis; composed of members of the conserved family of filament forming proteins called septins as well as septin-associated proteins.

medial cortex septin ring
Ontology Cellular Component
Definition A ring-shaped structure that forms at the medial cortex at the onset of cytokinesis; composed of members of the conserved family of filament forming proteins called septins as well as septin-associated proteins.

(starts as a single ring, but splits into 2)