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A condensed cytoplasmic structure that covers the nucleus of mammalian spermatozoa except for a narrow zone around the insertion of the tail. It shows two distinct regions, a subacrosomal layer and, continuing caudally beyond the acrosomic system, the postacrosomal sheath. The perinuclear theca has been considered a cytoskeletal scaffold responsible for maintaining the overall architecture of the mature sperm head; however, recent studies indicate that the bulk of its constituent proteins are not traditional cytoskeletal proteins but rather a variety of cytosolic proteins. Any constituent part of the cytoplasm, all of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. Cytoplasm situated near, or occurring around, the nucleus. Any constituent part of the living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: perinuclear region of cytoplasm
Acc: GO:0048471
Aspect: Cellular Component
Desc: Cytoplasm situated near, or occurring around, the nucleus.
Proteins in PDR annotated with:
   This term: 563 [Search]
   Term or descendants: 565 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0048471 - perinuclear region of cytoplasm (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle