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4 Sep 2011 09:41:59 IST

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human reproduction

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what is the function of annulus in sperm?

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vignesh the cooler version of newton

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4 Sep 2011 10:01:40 IST

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sperm has to undergo a lot of morphological and structural changes during spermatogenesis and fertilization. while most eukaryotic cells do this by synthesising different proteins in different phases, sperm, unfortunately does not have this option. it achieves this by segregating different proteins in different compartments and then relocating them during different phases of differentiation. annulus, the diffusion barrier protein at the proximal part of mid piece is one of those proteins which helps in segregating and relocating the proteins, both cytoplasmic and membrane proteins.

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