Definition: Munc-18 (short for mammalian uncoordinated-18) is a group of proteins that are very important for how nerve cells communicate with each other. These proteins help control the process of synaptic vesicle fusion, which is when tiny bubbles (vesicles) filled with chemicals (neurotransmitters) merge with the cell membrane to release…

Definition: The SNARE (Soluble N-ethylmaleimide-sensitive factor Attachment protein REceptor) complex is a group of proteins that play a crucial role in membrane fusion, particularly in the release of neurotransmitters from synaptic vesicles. The core SNARE complex consists of a 4-α-helix bundle formed by synaptobrevin, syntaxin, and SNAP-25. Components: The main…

Definition: A synaptic vesicle is a small, sac-like structure found in neurons that stores neurotransmitters, which are chemical messengers used for communication between nerve cells. These vesicles are located within the presynaptic terminal of a neuron and release their contents into the synaptic cleft in response to electrical signals, facilitating…

Definition: Haploinsufficiency is a genetic condition where having only one functional copy of a gene is not enough to produce sufficient protein for normal cellular function.  Key Points:  Mechanism: Clinical Relevance: Importance in Genetics: Research Implications: FAQs: Diagnosis typically involves genetic testing to identify mutations or deletions in specific genes…

Definition: Whole exome sequencing is a genomic technique that sequences all protein-coding regions (exons) of genes in a genome, known as the exome1. It captures approximately 1-2% of the human genome, containing about 85% of known disease-related variants. Key Features: Applications: Advantages: Limitations: Process: Clinical Relevance: FAQs

Definition: Ohtahara syndrome (OS), also known as Early Infantile Developmental & Epileptic Encephalopathy (EIDEE), is a rare and severe form of epilepsy that affects infants, typically within the first three months of life, often within the first 10 days after birth.  Key Characteristics: Alternative Names: Seizure Types:  Causes: Diagnosis: Based…

Definition: Mosaicism is a genetic condition in which an individual has two or more genetically distinct cell populations within their body, all originating from a single fertilized egg. Key Characteristics: Causes: Types: Diagnosis: Examples of Mosaic Conditions: Treatment: Treatment depends on the type and severity of the disorder, often less…