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perinuclear theca

A condensed cytoplasmic structure that covers the nucleus of mammalian spermatozoa except for a narrow zone around the insertion of the tail. It… 
National Institutes of Health

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cytoskeletal calyx

Papers overview

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2016
2016
Sperm head shaping in ratites: New insights, yet more questions.
2013
2013
First evidence of prothymosin alpha localization in the acrosome of mammalian male gametes
Prothymosin α (PTMA) is a highly acidic intrinsically unstructured protein. Its expression in male gonads is evolutionary… 
2010
2010
Appearance of an oocyte activation-related substance during spermatogenesis in mice and humans.
BACKGROUND Recently we reported that an oocyte activation ability in human and mouse sperm is associated with head flatness or… 
2009
2009
Oocyte activation ability correlates with head flatness and presence of perinuclear theca substance in human and mouse sperm.
BACKGROUND Recent studies indicate that round-headed sperm cannot activate oocytes and lack the postacrosomal sheath (PAS) or… 
2006
2006
Cryopreservation of bull spermatozoa alters the perinuclear theca.
Review
2003
Review
2003
Perinuclear theca during spermatozoa maturation leading to fertilization
Mammalian spermatozoa acquire the capacity to fertilize the ovum and display motility during their passage through the epididymis… 
2003
2003
Release of the Ca(2+) oscillation-inducing sperm factor during mouse fertilization.
2003
2003
Fate of Postacrosomal Perinuclear Theca Recognized by Monoclonal Antibody MN13 after Sperm Head Microinjection and Its Role in Oocyte Activation in Mice1
Abstract Monoclonal antibody (mAb) MN13 labels mouse sperm head postacrosomal perinuclear theca (PT), which is possibly involved… 
2001
2001
Comparative distribution of short dystrophin superfamily products in various guinea pig spermatozoa domains.
In this study, the presence and cellular distribution of dystrophin family products (i.e. Dp71d, Dp71f-like protein and… 
1999
1999
A perinuclear theca substructure is formed during epididymal guinea pig sperm maturation and disappears in acrosome reacted cells.
The perinuclear theca (PT) is a unique cytoskeletal mammalian sperm structure that surrounds the nucleus. Using negatively… 
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