Navigation Links
Crystallography reveals the 3-D structure of mammalian sperm receptor
Date:12/4/2008

Scientists at the Swedish medical university Karolinska Institutet have determined the first 3D structure of ZP3, a protein essential for the interaction between the mammalian egg coat and sperm. The findings, presented in Nature, gives a first glimpse into the molecular architecture of animal egg coats, with important implications for the future of human reproductive medicine and the possibility of developing novel contraceptives.

The beginning of every new life starts with fertilization, the most crucial step of which is the initial species-specific recognition between egg and sperm. The receptors for sperm, proteins ZP3 and ZP2, contain a common sequence that allows them to form a matrix of filaments, the so-called zona pellucida that completely surrounds the egg. The Protein Crystallography Unit at Karolinska Institutet, led by Dr. Luca Jovine, has now determined the structure of the most conserved part of this building block, the ZP-N domain.

"ZP3 was identified almost 30 years ago, but obtaining structural information on this key reproductive protein has been technically challenging due to its high heterogeneity", says Luca Jovine.

The zona pellucida is essential for natural fertilization in mammals. The Karolinska Institutet researchers hope that X-ray crystallographic characterization of a region of ZP3 that is important for its ability to polymerize could help explaining cases of human infertility, as well as lead to the development of novel targeted, non-hormonal contraceptives. The research made on the ZP-N domain has also provided insights that extend beyond the field of reproduction. Among other things, an unexpected parallel has been uncovered with molecular features that are involved in speciation among invertebrates.

Moreover, ZP-N domains are also found in many other extracellular proteins that are unrelated to fertilization, but play important roles in human diseases such as non-syndromic deafness, renal and vascular disorders, and cancer. In the Nature paper, an example is discussed that shows how the structure of ZP-N can be used to understand the molecular basis of some of these disorders.

"Mammalian fertilization involves a highly complex series of events. Our findings pave the way for future investigations into this fascinating subject by providing a first snapshot of the beginning of life at atomic resolution", says Luca Jovine.


'/>"/>

Contact: Sabina Bossi
sabina.bossi@ki.se
46-852-486-066
Karolinska Institutet
Source:Eurekalert

Related medicine news :

1. Brain imaging reveals breakdown of normal emotional processing
2. Survey reveals disparities in skin cancer knowledge, protection among high school students
3. Large intensive care study reveals vital recommendations for treatment of brain injury patients
4. Inc. Magazine Reveals Its 26th Annual List of Americas 500 Fastest-Growing Private Companies
5. Survey From The Partnership and MetLife Foundation Reveals Important Role Todays Grandparents Play in Teens Lives
6. New Survey Reveals Kidney Patients Concern About Medicare Policies
7. UCSD study reveals the regulatory mechanism of key enzyme
8. UCSD study reveals the regulatory mechanism of key enzyme
9. Poll reveals public awareness of nanotech stuck at low level
10. Survey reveals ignorance and confusion about cancer amongst the elderly
11. Story Reveals How Isabel and Her Family Learn About Bone Health and Osteoporosis
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/8/2016)... ... ... A man who has struggled to quit smoking, a man who has struggled with hair ... solutions to his problems – and he did. Now Nabat, a serial entrepreneur featured as ... breakthrough inventions to the world and better people's lives. His own experience with nicotine addiction ...
(Date:2/8/2016)... ... 08, 2016 , ... Steve Helwig & Associates Insurance & Financial, serving the ... has teamed up with Citizens Opposed to Domestic Abuse in support of its efforts ... all those victimized by the fear of violence in their own homes, donations may ...
(Date:2/8/2016)... ... February 08, 2016 , ... ... announced today that nominations will be accepted February 8, 2016 through May ... , Awards include the Information Security Executive® of the Year, which recognizes ...
(Date:2/8/2016)... ... February 08, 2016 , ... Discover the Rocky Mountain region’s longest running and ... companies. Attendees also get to see the most incredible gardens and home improvement ... , at the Colorado Convention Center - 700 14th St. Denver CO, is an ...
(Date:2/8/2016)... ... February 08, 2016 , ... Joshua ... on how healthcare companies can use newly released government data on populations and ... population and intervene and capture the value they create to succeed in new ...
Breaking Medicine News(10 mins):
(Date:2/8/2016)... Company, Inc. (NYSE MKT: AXN) today announced that for the ... the Company achieved revenue of $8,195,839, a 27% improvement on ... 2015. --> --> The ... $2,068,635, or $.03 per share, up 265% from the net ... of fiscal year 2015. Gross margin for the three months ...
(Date:2/8/2016)...  HemaFlo Therapeutics, Inc. announced today that the United States ... 9,119,880 covering the use of NephroFlow to treat acute kidney ... founder, said, "We are pleased to secure our rights to ... , PhD, HemaFlo,s founder, said, "We are pleased to secure ... Dale Peterson , PhD, HemaFlo,s founder, said, "We ...
(Date:2/8/2016)... Calif. , Feb. 8, 2016  Sangamo ... in therapeutic genome editing, announced that the U.S. ... Company,s Investigational New Drug (IND) application for SB-318, ... life-long therapy for Mucopolysaccharidosis Type I (MPS I). ... enables Sangamo to initiate a Phase 1/2 clinical ...
Breaking Medicine Technology: