Navigation Links
Major WHO study concludes calcium supplements can reduce complications during pregnancy

lves of the enzyme have an ear and cheek protrusion on each side. (See illustration.) Frayed whiskers even appear to sprout from the bottom. The similarity to a face ends at the top of the molecule, where two flaps open to reveal a cavity. That is where enzymes and other proteins are cleaved into the parts necessary to assemble infectious virus particles. Structural studies of this cavity helped scientists find the original protease inhibitors. Other scientists are trying to design drugs to bind to the whiskers and or to lock down the flaps by binding to their top.

Perryman's first results, which were published in the April 1, 2004, issue of Protein Science, showed that the mechanism of drug resistance seemed to involve the motion of the flaps. More specifically, the double-mutant virus displayed larger flap motions, especially at the tips. These larger movements seem to make it more difficult for the current drugs to function, since they must force the flaps to close and remain closed in order to prevent the enzyme from working. It probably takes more energy for the drugs to close the more mobile flaps of the mutant.

Perryman and his colleagues also observed that the flaps opened in a seesaw motion on each side, pinching the "cheek and "ear" together. That observation suggested to them that a small molecule might be able to wedge between the ear and cheek, blocking the flap opening.

"Some drugs act by binding to the active site of a target molecule, such as the site that an enzyme normally uses to catalyze reactions," McCammon said. "But increasingly, scientists are finding that other binding sites can be important. For HIV/AIDS, an important class of drugs called non-nucleotide inhibitors for reverse transcriptase typically bind at such alternate sites."

Once Perryman had a hypothesis to test in a second round of simulations -- the proposed mechanics of the protease enzyme's nanomachinery--he used artificial restraints in the comp
'"/>

Source:American Journal of Obstetrics and Gynecology


Page: 1 2 3 4 5

Related biology news :

1. Major new UNC-based drinking water study suggests pregnancy fears may be overstated
2. Major breakthrough in the treatment of cancers and infectious diseases
3. Major advance made on DNA structure
4. Major obesity gene is lost in the shuffle
5. Major initiative proposed to address amphibian crisis
6. Major cancer study aims to identify protein markers for early-stage disease
7. Major link in brain-obesity puzzle found
8. Major gene study uncovers secrets of leukemia
9. Bioartificial kidney under study at MCG
10. W.M. Keck Foundation funds study of friendly microbes
11. Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
Post Your Comments:
(Date:6/18/2013)... of Molecular Biology, has been honored as a ... Torrent is being recognized for his outstanding research, ... antimicrobial regions in proteins. Luis Rivas, Centro de ... algorithm to interrogate full genomes in order to ... results." , Torrent obtained his Ph.D. from ...
(Date:6/18/2013)... for Molecular Pathology is proud to announce it will ... (FASEB) on July 1, 2013. The FASEB Board approved ... , The 26 constituent societies of FASEB represent more ... the advancement of research and education in biological and ... important now than ever," said Jennifer L. Hunt, MD, ...
(Date:6/18/2013)... a chemical modification of DNA and this modification ... DNA sequence. Until now, scientists believed that this ... genes. Today, a team of researchers from the ... Dermitzakis, Louis-Jeantet Professor at the Faculty of Medicine, ... and that DNA methylation may play both a ...
Breaking Biology News(10 mins):The American Society for Microbiology honors Marc Torrent 2The secret of DNA methylation 2
... is a growing human health concern. Researchers around ... to be present in surface waters and sediments, ... In a recent article in the November-December issue ... State University (CSU) describe a study to find ...
... morality gives but a slight or no advantage to ... men of the same tribe...an advancement in the standard ... one tribe over another. With these ... and pro-social behaviors individuals behaving for the good of ...
... Britain over the past 17 years for extracting oil is ... heavy oilfield in Canada. Duvernay Petroleum is to ... the University of Bath at its site at Peace River ... is very viscous, like syrup, or even solid in its ...
Cached Biology News:Manure management reduces levels of antibiotics and antibiotic resistance genes 2Group selection, a theory whose time has come...again 2Massive Canadian oilfield could be exploited using new UK system 2Massive Canadian oilfield could be exploited using new UK system 3
(Date:6/19/2013)... 19, 2013   NineSigma , Inc., of ... following its launch, NineSights.com is now the ... for the worldwide community of innovators. From ... sustainability experts, NineSights stands out for its large community ... and technical disciplines, all vetted by NineSigma. The community ...
(Date:6/19/2013)... Bloomington, Indiana (PRWEB) June 19, 2013 ... Valentine joined the speaking faculty at 2013’s BioLogistics ... , The conference, coordinated by Cold Chain IQ ... surrounding biologics. This “complexity” is, in part, attributed ... medicine. , “Implicit within these trends is ...
(Date:6/19/2013)... San Diego, CA (PRWEB) June 19, 2013 ... quality pipettes, Pipette.com is now stocked with Simport’s Dropette® ... , all aimed at the customer doing basic biology, ... blood work, and serology). , For over 35 years, ... and disposable plastic labware - products like the Simport ...
(Date:6/18/2013)... 18, 2013 (PRWEB) June 18, 2013 ... attendance system in North America, has introduced AccountLinx ... data and payroll records between ExakTime’s software and ... automates ExakTime software setup and keeps employee databases ... data from a business’ current payroll software, directly ...
Breaking Biology Technology:NineSigma Evolves Global Open Innovation through Social Media Platform, NineSights 2NineSigma Evolves Global Open Innovation through Social Media Platform, NineSights 3BioConvergence® Presents at BioLogistics Summit on Risk Matrix for Biosamples during Shipment 2Leading Pipette Distributor Pipette.com Now Stocks Transfer Pipettes: Simport’s Dropette and Heathrow Scientific Disposable Plastic Transfer Pipettes 2ExakTime Introduces AccountLinx Plus 2
... Aug. 21 /Xinhua-PRNewswire-FirstCall/ --,China-Biotics, Inc. (OTC ... leading Chinese firm specializing in the ... probiotics products,today announced it signed a ... Ltd. ("Square Pharmaceutical") to supply probiotics ...
... 29% and adjusted EPS* of $0.35 ... increased 218% -, - Total Fiscal Year Revenues of $79.8M increased 15% ... $0.99 increased ... reported the results for its fourth quarter and fiscal,year ended June 30, 2008., Fourth ...
... YORK, MUNICH, Germany and AMSTERDAM, Netherlands, Aug. ... B.V., the,pan-European specialty pharmaceutical company, today announced ... million revenue interest acquisition financing,agreement to fund ... other markets, from Procter & Gamble Pharmaceuticals. ...
Cached Biology Technology:China-Biotics, Inc. Continues to Broaden Bulk Additives Client Base 2China-Biotics, Inc. Continues to Broaden Bulk Additives Client Base 3Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 2Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 3Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 4Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 5Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 6Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 7Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 8Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 9Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 10Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 11Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 12Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 13Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 14Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 15Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 16Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 17Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 18Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 19Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 20Kensey Nash Reports Fourth Quarter and Fiscal Year 2008 Results 21TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 2TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 3TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 4TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 5
Human Cystatin A MAb (Clone 224705)...
... Molecular Probes is pleased to ... for the ultrasensitive detection of primary ... at Indiana University, the ATTO-TAG reagents ... o-phthaldialdehyde (OPA), naphthalene-2,3-dicarboxaldehyde (NDA) and anthracene-2,3-dicarboxaldehyde, ...
...
Anti-SDF-1β/PBSF affinity isolated antibody lyophilized powder Lyophilized from a 0.2 μm filtered solution in phosphate buffered saline recombinant human SDF-1β/PBSF expressed in E....
Biology Products: