Navigation Links
Duck-billed platypus genome sequence published
Date:5/9/2008

s a tightly clustered set of genes that produce the casein proteins that make up milk.

A good sense of smell is something mammals have in common. Compared to most mammals, chicken and lizard have a relatively poor complement of odorant receptor genes responsible for their ability to detect smells. Interestingly, platypus has about half as many odor receptors as do the mouse and other mammals. However, the researchers also found that the platypus genome has experienced an expansion in the genes that code for a particular type of odor receptor, called a vomeronasal receptor. Researchers think the expansion of this particular set of genes may be involved in the ability of the platypus to detect odors during underwater foraging.

Researchers also found that genes related to the immune system of the platypus are very similar to those of other mammals, with a few key differences. For example, the platypus genome contains expansions in the gene family that codes for a microbe-fighting peptide called cathelicidin. Primates and rodents have only a single copy of the cathelicidin gene. Scientists think that the expansion of this gene family in platypus may be involved in boosting the immune system of their very immature offspring, which hatch very developmentally immature. Scientists postulate that the microbe-fighting peptide may have been less critical for other mammals, whose offspring spend relatively long periods of time developing within the womb and are born at a more advanced stage of development.

Scientists were also eager to find out how venom production became a part of the platypus genome. When researchers began analyzing the genetic sequences responsible for venom production in the male platypus, they made a surprising finding. They discovered that venom produced by the male platypus arose from duplications in certain genes over the course of evolutionary time which had been passed on from ancestral reptile genomes. The reptilian li
'/>"/>

Contact: Geoff Spencer
spencerg@mail.nih.gov
301-402-0911
NIH/National Human Genome Research Institute
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Platypus genome decoded
2. The FAQs about the human genome
3. First draft of transgenic papaya genome yields many fruits
4. Charting the epigenome
5. Tomato pathogen genome may offer clues about bacterial evolution
6. Scientists find a fingerprint of evolution across the human genome
7. Cold Spring Harbor Protocols features methods to screen genomes and analyze evolution
8. Software developed by Boston College lab delivers speed and accuracy to genome research
9. The beetles genome sequenced for the first time
10. K-State contributions to red flour beetle genome sequencing featured in March 27 issue of Nature
11. All eyes and ears on the corn genome
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/30/2014)... professor and Howard Hughes Medical Institute investigator, and ... recipients in the 2014 round of grants from ... BRAIN (Brain Research through Advancing Innovative Neurotechnologies) Initiative ... September 30, provides more than $3 million in ... , The BRAIN Initiative, launched last year, is ...
(Date:9/30/2014)... German . FRANKFURT. ... in the world. Because they grow underground, people use trained ... of truffles is not only of interest to gourmets. A ... the Goethe University Frankfurt have discovered that the smell of ... trapped inside truffle fruiting bodies. , White truffles from the ...
(Date:9/30/2014)... hope: A new research report published in October 2014 ... explains how scientists developed a synthetic version of a ... in human and mouse eggs similar to the natural ... fertilization. , "We believe that the results of this ... of human fertilization by providing a precise answer to ...
Breaking Biology News(10 mins):Salk scientists receive $3 million for BRAIN Initiative grant 2On the trail of the truffle flavor 2Synthetic sperm protein raises the chance for successful in vitro fertilization 2
... used topically in many skin creams and cosmetics because ... Now, new research just published in the Journal of ... and how it might actually benefit skin from the ... cocoa may actually help improve the appearance of women's ...
... is the only culprit in the steady increase in the ... challenged by a scientist speaking at the 22nd annual conference ... Prague, Czech Republic, Wednesday 21 June 2006. Professor ... that his research had shown that improved nutrition, both maternal ...
... (LANP) have unveiled the "nanoegg," the latest addition ... of the versatile nanoshell, nanoeggs are asymmetric specks ... harnessed for molecular imaging, medical diagnostics, chemical sensing ... July 18 issue of the Proceedings of the ...
Cached Biology News:New study reveals components of cocoa may enhance the appearance of the skin 2Nutrition a major factor in rise in twin pregnancies 2Nutrition a major factor in rise in twin pregnancies 3Rice scientists unveil 'nanoegg' 2
(Date:9/30/2014)... Nematicide is a type of chemical ... parasitic roundworms, found in massive quantities virtually everywhere—in ... animals. Nematicides have tended to be broad-spectrum toxicants ... through the soil. A single gram of soil ... more than 10,000 species classified, they are one ...
(Date:9/30/2014)... 30, 2014 Follow us on ... each type of cholesterol carrier or lipoprotein in the ... excessive cholesterol levels in the body, especially along the ... heart attack and other cardiovascular disorders. Cardiovascular Diseases (CVD) ... for cholesterol levels on a regular basis, to assess ...
(Date:9/30/2014)... Fast, semi-automatic creation of ... documents ChemAxon , a leader ... for life science research, launches ChemCurator, an application ... from documents. Markush structures are essential ... and understanding Markush structures is a difficult and ...
(Date:9/30/2014)... Sept. 30, 2014  KemPharm, Inc., a clinical-stage ... development of proprietary new molecular entity (NME) prodrugs, ... Trademark Office (USPTO) issued U.S. Patent No. 8,816,083 ... Acid, Benzoic Acid Derivatives and Heteroaryl Carboxylic Acid ... Use Thereof." The patent, which extends ...
Breaking Biology Technology:Nematicides Market by Types (Fumigants, Organophosphates, Carbamate and Bio-Nematicides), Applications (Agrochemicals, Industrial, and Others), and Geography (North America, Europe, Asia-Pacific & ROW) - Global Trends & Forecasts to 2019 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 3Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 4ChemAxon Introduces ChemCurator for Chemical Information Extraction and Markush Structure Creation 2KemPharm, Inc. Receives Patent from the USPTO for Novel Prodrug of Hydromorphone, KP511 2
... CLINTON, N.J. and JERUSALEM, July 6 Ikaria Holdings, ... Ikaria has entered into an agreement to obtain a ... treatment for preventing pathological cardiac remodeling following acute myocardial ... phase I/II clinical trial, is administered via the coronary ...
... /PRNewswire-FirstCall/ - avVaa World Health Care Products Inc. (Pink ... of nationally branded therapeutic, natural skin and health care ... an agreement with 3PL Worldwide, Inc., for all Order ... CEO explains that "3PL Worldwide offers true multichannel support ...
... July 6 /PRNewswire-FirstCall/ -- Verenium Corporation (Nasdaq: ... the $29.5 million of outstanding 8% Senior Convertible Notes due ... July 1, 2009 is effective as of 8:00 a.m. today. ... with holders of 87% of the Notes, which is above ...
Cached Biology Technology:IKARIA(R) to In-License BioLineRx's BL-1040 2IKARIA(R) to In-License BioLineRx's BL-1040 3avVaa World Health Care Products, Inc. Signs Agreement with 3PL Worldwide, Inc., for Order Management & Fulfillment for avVaa's Product 2Verenium Completes Amendment to 8% Senior Convertible Notes 2Verenium Completes Amendment to 8% Senior Convertible Notes 3Verenium Completes Amendment to 8% Senior Convertible Notes 4