Navigation Links
Egg meets sperm: The female side of the story
Date:10/21/2010

Researchers at the Swedish medical university Karolinska Institutet have been able to describe the 3D structure of a complete egg receptor that binds sperm at the beginning of fertilization. The results, published in the journal Cell, will lead to better understanding of infertility and may enable entirely new types of contraceptives.

For centuries, the imagination of people has been grasped by the encounter of gametes egg and sperm-, whose union gives rise to a new individual. At the beginning of conception, sperm binds to proteins in the extracellular coat of the egg, called zona pellucida (ZP). But the molecular details of this fundamental biological event have so far remained obscure.

Luca Jovine's research team at Karolinska Institutet has now managed to determine the three-dimensional structure of the receptor molecule that binds sperm, called ZP3 (see press photos). The detailed structural information, based on data collected at the European Synchrotron Radiation Facility (ESRF), makes it possible to begin exploring at the molecular level how the egg interacts with sperm at fertilization.

The study suggests which parts of the receptor are likely to be directly contacted by sperm, and provides new insights into how the sperm receptor is assembled and secreted from the egg. The findings have important implications for human reproductive medicine, as they may explain how mutations in the sperm receptor gene could cause infertility. The research could also potentially lead to the design of non-hormonal contraceptives specifically targeting egg-sperm interaction.

"The results give a remarkable picture of the female side of fertilization", says Luca Jovine, who has led the study. "But this is, of course, only half of the story. The next step will be to tackle the corresponding molecules on sperm that allow it to bind to the egg."


'/>"/>

Contact: Press Officer Katarina Sternudd
katarina.sternudd@ki.se
46-852-483-895
Karolinska Institutet
Source:Eurekalert

Page: 1

Related biology news :

1. Climate change meets ocean life in new northeast research institute
2. Georgia Stem Cell Initiative meets on MCG campus Feb. 10
3. Where optics meets medicine
4. A new journal where molecular biology meets clinical research
5. Female fish flaunt fins to attract a mate
6. Female marine snails trick amorous males
7. Rice sociologist finds male scientists regret parenthood decisions more than female counterparts
8. Male antelopes trick females into extra sex opportunities
9. Male antelopes deceive females to increase their chances of mating
10. Male or female? In flies, some cells cant tell
11. Hormonal contraceptives associated with higher risk of female sexual dysfunction
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... , Apr. 11, 2017 Research and Markets ... 2017-2021" report to their offering. ... The global eye tracking market to grow at a CAGR ... Global Eye Tracking Market 2017-2021, has been prepared based on an ... the market landscape and its growth prospects over the coming years. ...
(Date:4/5/2017)... April 5, 2017  The Allen Institute for Cell ... Explorer: a one-of-a-kind portal and dynamic digital window into ... data, the first application of deep learning to create ... cell lines and a growing suite of powerful tools. ... these and future publicly available resources created and shared ...
(Date:4/3/2017)... April 3, 2017  Data captured by ... platform, detected a statistically significant association between ... to treatment and objective response of cancer ... to predict whether cancer patients will respond ... as well as to improve both pre-infusion potency ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... ... (ADC) therapeutics, today confirmed licensing rights that give it exclusive global access ... developed in collaboration with Children’s Hospital Los Angeles (CHLA). Additionally, an ...
(Date:10/10/2017)... Oct. 10, 2017 SomaGenics announced the receipt ... to develop RealSeq®-SC (Single Cell), expected to be the ... RNAs (including microRNAs) from single cells using NGS methods. ... need to accelerate development of approaches to analyze the ... "New techniques for measuring levels of mRNAs in ...
(Date:10/9/2017)... ... October 09, 2017 , ... The award-winning American Farmer television ... quarter 2018. American Farmer airs Tuesdays at 8:30aET on RFD-TV. , With global ... the challenge of how to continue to feed a growing nation. At the same ...
(Date:10/7/2017)... (PRWEB) , ... October 06, ... ... years’ experience providing advanced instruments and applications consulting for microscopy and surface ... expertise in application consulting, Nanoscience Analytical offers a broad range of contract ...
Breaking Biology Technology: