DNAH3
DNAH3: A Vital Cellular Motor with Implications in Disease
Introduction: DNAH3 is a gene that encodes a protein called dynein heavy chain 3. Dynein is a microtubule motor protein that plays a crucial role in various cellular processes, including cell division, organelle transport, and ciliary function.
Description: The human DNAH3 gene is located on chromosome 16q22.1. It consists of 63 exons and encodes a protein of approximately 4,000 amino acids. DNAH3 is expressed in multiple tissues throughout the body, including the brain, heart, lungs, and kidneys.
Associated Diseases: Mutations in DNAH3 can lead to a range of genetic disorders, including:
- Situs inversus: A condition in which the internal organs are reversed in their left-right orientation.
- Primary ciliary dyskinesia (PCD): A group of disorders characterized by impaired ciliary function, leading to chronic respiratory and sinus infections.
- Hydrocephalus: A condition in which excessive fluid accumulates in the ventricles of the brain, causing increased head size.
- Retinal dystrophy: A group of disorders that affect the retina of the eye, leading to vision impairment or loss.
- Polycystic kidney disease (PKD): A genetic condition characterized by the formation of cysts in the kidneys.
Did you Know ? Approximately 1 in 10,000 people worldwide have PCD, a condition caused by mutations in DNAH3 or other dynein genes.
