Man2B1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Man2B1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Introduction
Man2B1 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@molecular2018]
Infobox
{.infobox .infobox-gene} [@protein2017]
Function
The MAN2B1 gene encodes acid alpha-mannosidase, a lysosomal hydrolase that catalyzes the hydrolysis of terminal alpha-mannose residues from mannose-containing oligosaccharides. This enzyme is essential for the degradation of N-linked glycoproteins in the lysosome.
Acid alpha-mannosidase is a homodimeric glycoprotein with a molecular weight of approximately 280 kDa. Each subunit is proteolytically processed into a mature form consisting of heavy and light chains linked by disulfide bonds.
Disease Associations
Alpha-Mannosidosis
Alpha-mannosidosis is a rare autosomal recessive lysosomal storage disorder caused by deficiency of acid alpha-mannosidase, leading to accumulation of mannose-rich oligosaccharides in various tissues.
Inheritance Pattern: Autosomal recessive
Prevalence: ~1 in 500,000 to 1 in 1,000,000 births
Clinical Features:
Coarse facial features (similar to Hurler syndrome)
Hearing loss (conductive and sensorineural)
Recurrent infections (otitis media)
Skeletal abnormalities (dysostosis multiplex)
Intellectual disability (variable severity)
Ataxia and motor delays
Immunodeficiency (due to abnormal glycoprotein degradation)
The disease shows considerable phenotypic variability, with milder forms presenting later in life with less severe symptoms.
Expression
MAN2B1 is expressed in most tissues, with highest levels in:
Liver
Kidney
Brain
Leukocytes
The enzyme is targeted to lysosomes via mannose-6-phosphate receptor-mediated trafficking.
Key Publications
[Malm et al., Alpha-mannosidosis: clinical features and diagnosis (2000)](https://doi.org/10.1016/s0387-7604(00)00132-5)
[Nilssen et al., MAN2B1 mutations in alpha-mannosidosis (2004)](https://doi.org/10.1093/hmg/ddh218)
[Kuokkanen et al., MAN2B1 gene structure and mutations (2006)](https://doi.org/10.1186/1471-2350-7-42)
Man2B1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Background
The study of Man2B1 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Brain Atlas Resources
[Allen Human Brain Atlas - MAN2B1 Expression](https://human.brain-map.org/microarray/search/show?search_term=MAN2B1)
[Allen Cell Type Atlas - MAN2B1](https://celltypes.brain-map.org/)