Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 11, one copy inherited from each parent, form one of the pairs. Chromosome 11 spans about 134 million DNA building blocks (base pairs) and represents between 4 percent and 4.5 percent of the total DNA in cells.
Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 11 likely contains about 1,500 genes. More than 150 of these genes provide instructions for making olfactory receptors, which are proteins that are used to detect different smells.
Genes on chromosome 11 are among the estimated 20,000 to 25,000 total genes in the human genome.
Recently the number of genes known to be associated with Alzheimer's disease has increased from four to eight, including the MS4A gene cluster on chromosome 11.
A team of international researchers, including Case Western Reserve University School of Medicine, have discovered regions of the genome that affect the severity of the genetic disease cystic fibrosis, the most common lethal genetic disease affecting children in North America.
Johns Hopkins Institute for Genetic Medicine researchers working as part of the North American Cystic Fibrosis Consortium have discovered two regions of the genome that affect the severity of cystic fibrosis, a genetic condition that causes scarring throughout the body, affecting most notably the pancreas and lungs.
Pediatric cancer researchers have identified variations in a gene as important contributors to neuroblastoma, the most common solid cancer of early childhood. The study team, led by researchers at The Children's Hospital of Philadelphia, found that common variants in the LMO1 gene increase the risk of developing an aggressive form of neuroblastoma, and also mark the gene for continuing to drive the cancer's progression once it forms.
Identification of a molecular communications pathway that influences the mobilization of hematopoietic (blood) stem cells could lead to targeted therapies for improving bone marrow transplant success rates.
Researchers have found that one particularly aggressive type of blood cancer, mixed lineage leukemia (MLL), has an unusual way to keep the molecular motors running. The cancer cells rely on the normal version of an associated protein to stay alive.
Researchers at the Sahlgrenska Academy at the University of Gothenburg, Sweden and Karolinska Institutet have used novel technology to reveal the different genetic patterns of neuroblastoma, an aggressive form of childhood cancer. This discovery may lead to significant advances in the treatment of this malignant disease, which mainly affects small children.
Howard Hughes Medical Institute researchers have identified a naturally occurring human protein that helps prevent infection by H1N1 influenza and other viruses, including West Nile and dengue virus.
Pediatric oncologists have identified specific genes, dubbed partner genes, that fuse with another gene to drive an often-fatal form of leukemia in infants. By more accurately defining specific partner genes, researchers expect to better predict which infants may benefit from particular treatments.
Leukemia and myeloproliferative disorders are serious and often deadly blood cancers. Research presented today at the 51st Annual Meeting of the American Society of Hematology introduces potential new treatment options and improved diagnostic methods for patients suffering from acute promyelocytic leukemia, chronic myeloid leukemia, infant acute lymphoblastic leukemia, and myelofibrosis that are based on a better understanding of the underlying genetic causes of these conditions.
An international team of scientists has identified two more genetic risk factors for Alzheimer's disease. The findings are reported in the online edition of the journal Nature Genetics.
In the September 1st issue of G&D, Dr. Karen Oegema (UCSD) and colleagues identify the molecular basis of the lethal developmental disorder, hydrolethalus syndrome, and reveal that hydrolethalus syndrome actually belongs to the emerging class of human ciliopathy diseases.
Scientists of the Max Delbrück Center for Molecular Medicine (MDC) Berlin-Buch and Charité - University Medical School, Berlin, Germany, in collaboration with researchers from the Klinikum rechts der Isar of Technical University Munich and Christian Albrecht University, Kiel, have identified a gene variant on chromosome 11 that is associated with an increased risk of atopic dermatitis.
Scientists at The Institute of Cancer Research have made significant progress in pinpointing two new risk factors associated with the most common childhood kidney cancer, known as Wilms tumour.
Researchers from Uppsala University have discovered a mechanism that silences several genes in a chromosome domain. The findings, published in today's on-line issue of Molecular Cell, have implications in understanding the human disorder Beckwith-Wiedemann syndrome.
A brain chemical that plays a role in long term memory also appears to be involved in regulating how much people eat and their likelihood of becoming obese, according to a National Institutes of Health study of a rare genetic condition.
In two papers published today, deCODE scientists and academic colleagues from Europe and the U.S. expand upon the company's recent findings in the genetics of pigmentation traits in people of European descent, and demonstrate that certain of these common variants also confer risk of two types of skin cancer.
Researchers at Georgetown University Medical Center have found a small molecule they say can block the action of the oncogene that causes Ewing's sarcoma, a rare cancer found in children and young adults.
Virginia Commonwealth University researchers studying hemoglobin genes, mutations of which play a role in genetic blood disorders like sickle cell anemia and beta-thalassemia, have identified two proteins that are responsible for regulating overlapping groups of genes during the development of red blood cells.
Their finding is the first to link individual differences written into the genetic code with a vaccine-related complication, albeit a mild one.
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