HHMI researchers have used a fragment of HIV to deliver proteins into the cells of living mice.
Two related proteins that act as brakes for a variety of cellular growth processes appear to play a critical role in ensuring that both blood cells and immune system cells are neither overactive nor overabundant.
HHMI researchers have found the first hereditary human sleep disorder that is caused by a single gene. The disorder is passed from generation to generation in the same simple pattern characteristic of traits such as eye color.
HHMI researchers believe their technique can be used to determine the function of all of the fruit fly's genes.
A team of biologists has determined the three-dimensional structure of an enzyme that allows certain bacteria to resist the killing effects of the antibiotic gentamicin. The structure is also shared by a number of proteins involved in basic biological processes, including circadian rhythms and gene regulation.
A genetic mutation common in the most severe forms of muscular dystrophy also predisposes to heart damage.
Two genes that generate the immune system's remarkable diversity are controlled by the same small piece of DNA.
Mice born without a gene that regulates appetite exhibit unexpected attacks of narcolepsy.
A two-tiered boost to the immune system may allow the body to better fight cancer on its own.
New theories about how neural activity and visual stimuli sculpt the developing visual system.
A newly discovered protein in nerve cells holds enzymes poised for action next to their receptor.
Interferon cures only 20 percent of patients infected with hepatitis C virus. HHMI researchers may know the reason why.
Complex mathematical analysis reveals how potassium is allowed to travel across the cell membrane.
Sons conceived with the aid of a popular in vitro fertilization technique carry same genetic mutations that rendered their fathers infertile.
Molecular studies of a family of genes are pruning branches from the old evolutionary tree.
Genetic studies confirm that one gene mutation plays a major role in inherited deafness; the importance of another genetic mutation is called into question.
HHMI researchers discover a gene responsible for triggering embryonic cells in the inner ear to develop into sound- and motion-sensing hair cells.
HHMI researchers have found a protein whose activity controls the shape of a developing organ.
HHMI researchers have discovered a molecule that resembles a component of snake toxins, but has a dramatically different effect on the nervous system.
Nitric oxide prevents programmed cell death by handcuffing the molecular executioner.
Studies of a molecule that causes severe weight loss in cancer patients may yield new drugs to treat obesity.
Two HHMI labs discover a new molecular road sign that directs axons to their proper destination in the central nervous system.
HHMI researchers find that the mahogany protein suppresses obesity and plays a role in the immune system.
With odorant receptor genes from Drosophila in hand, researchers hope to learn how odors influence behavior.
How does the nose discriminate between different odors?
HHMI researchers have developed a versatile method for improving binding properties of potential drugs.
HHMI researchers have identified a gene that influences formation of the chambers of the heart.
Mouse geneticists get a boost with the release of an encyclopedia containing more than 360,000 genetic sequences.
By studying flies that have mutations similar to some cancer patients, HHMI researchers have found a new type of tumor suppressor gene.
Dopamine transporter knockout mice developed by HHMI investigator Marc Caron and colleagues have provided a wealth of information about the molecular nature of some behavioral disorders.
A human cell surface protein that maintains the structural integrity of tissues is also the portal of entry for bacteria and viruses.
HHMI investigators have produced an image of the active form of the HIV enzyme reverse transcriptase. This work may clarify how mutations render HIV resistant to antiviral drugs.
A team of scientists from the Howard Hughes Medical Institute at the University of Chicago has found that a ubiquitous protein may explain how relatively sudden changes in body shape occur in a species.
Un equipo de científicos del Instituto Médico Howard Hughes en la Universidad de Chicago ha encontrado que una ubicua proteína puede explicar cómo se llevan a cabo los cambios relativamente repentinos en la forma del cuerpo de una especie.
The most common genetic cause of infant mortality happens because cells cannot properly process messenger RNA. The search for drugs to correct this defect is underway.
HHMI investigators have found a cellular target of survival signals that can override programmed cell death.
Genetic studies have uncovered a host of new genes involved in the formation of spores in yeast. The studies may illuminate germ cell production in vertebrates.
HHMI researcher Leonard Zon leads a team that has cloned a zebrafish anemia gene, producing one of the first fish models of a human disease. The achievement opens a new avenue for studying the genetics of human diseases.
HHMI researchers show that ribozymes and enzymes are ready to perform their biological function as soon as they are produced.
The tumor suppressor p16 normally holds the growth-promoting molecule Cdk6 in check. New structural insights may explain how Cdk6 slips free from p16, promoting cancer development.
HHMI researchers produce the first glimpses of the molecular machinery that propels neurotransmitters into the synapse.
HHMI investigators have found another molecular landmark that points growing neurons to their proper destination in the brain or spinal cord.
Researchers report the first hard evidence that most cases of colon cancer arise when mutations in a genetic "master brake" help to switch on a well-known cancer-promoting gene.
Researchers used to identify important developmental genes one at a time. Now, a technique developed in Drosophila is taking wing, and hundreds of novel genes have been found.
Researchers find that a drug used to treat adult-onset diabetes may promote the formation of colorectal tumors.
The human immune system can recognize and destroy thousands of invaders. Did this diversity come about accidentally when a mobile piece of DNA inserted itself into the mammalian genome more than 450 million years ago?
Researchers discover new details about how cells monitor the signals that stimulate proliferation or shut down cell growth. Such signals can turn a normal cell into one that grows uncontrollably, the first step in the development of cancer.
Salt is poison for people with high blood pressure. Genetic studies are beginning to clarify who is at risk and why.
Scientists Determine Structure of HIV-1 Protein that Grasps Human Cells.
Researchers have identified a faulty conduit into nerve cells that causes them to fire uncontrollably, triggering the brief seizures that characterize some forms of epilepsy.