A new Cell Reports paper from Bing Yao's lab in Emory's Department of Human Genetics provides insights into mechanisms underlying several neurodegenerative diseases, such as ALS (amyotrophic lateral sclerosis) and Alzheimer's.
Jan 24, 2024
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Pancreatic cancer presents a challenging prognosis, marked by a five-year overall survival rate of merely 12.5%. Diagnosis frequently occurs at an advanced stage, characterized by metastasis to distant sites. The intricate ...
Jan 11, 2024
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Malignant melanoma is a type of skin cancer that originates from melanocytes or nevi, causing about 80% of skin cancer-related deaths. While some cases have shown significant response to existing molecular targeted therapies, ...
Sep 5, 2023
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Yulan Xiong, assistant professor of neuroscience at UConn Health, and her team have discovered that a regulator compound holds the potential to treat Parkinson's disease.
Aug 1, 2023
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Scientists have found a new use for copper in magnetic resonance imaging (MRI) contrast agent design, that could help to create better images which help doctors diagnose patients' conditions more easily and safely.
Jul 13, 2023
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A team led by researchers at Brigham and Women's Hospital and Harvard Medical School has taken a step toward solving a central mystery of Parkinson's disease: What is the normal function of the protein whose misfolding causes ...
Sep 5, 2022
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Myotonic dystrophy type 1 (DM1) is the most common form of muscular dystrophy, characterized by progressive muscle wasting and weakness and caused by abnormally repetitive DNA segments that are transcribed into toxic molecules ...
Jun 29, 2022
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Pulmonary arterial hypertension (PAH) is a type of high blood pressure in the lungs, in which blood vessels are narrowed, blocked or destroyed, causing the heart to work harder and, in time, result in cardiac weakness and ...
May 6, 2022
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The various manifestations of head and neck carcinomas rank sixth in frequency worldwide and are fatal for about half a million people every year. In a quarter of cases, head and neck squamous cell carcinoma (HNSCC) is caused ...
Apr 19, 2022
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Rice University researchers have introduced an online portal to help researchers screen COVID-19 drug candidates that might attack specific proteins of the SARS-CoV-2 virus.
Nov 1, 2021
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Carrier proteins are proteins that transport a specific substance or group of substances through intracellular compartments or in extracellular fluids (e.g. in the blood) or else across the cell membrane. Some of the carriers are water-soluble proteins that may or may not interact with biological membranes, such as some transporters of small hydrophobic molecules, whereas others are integral transmembrane proteins.
Carrier proteins transport substances out of or into the cell by facilitated diffusion and active transport. Each carrier protein is designed to recognize only one substance or one group of very similar substances. The molecule or ion to be transported (the substrate) must first bind at a binding site at the carrier molecule, with a certain binding affinity. Following binding, and while the binding site is facing, say, outwards, the carrier will capture or occlude (take in and retain) the substrate within its molecular structure and cause an internal translocation, so that it now faces the other side of the membrane. The substrate is finally released at that site, according to its binding affinity there. All steps are reversible.
For example:
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