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Mitochondrial methylmalonic aciduria type B protein

The MMAB gene encodes an enzyme involved in cobalamin metabolism. Mutations cause autosomal recessive homocystinuria-megaloblastic anemia cblB.


Clinic Method Carrier testing
Turnaround 5 days
Specimen type genomic DNA
Clinic Method Massive parallel sequencing
Turnaround 25 days
Specimen type genomic DNA
Research Method Genomic sequencing of the entire coding region
Turnaround 25 days
Specimen type genomic DNA

Related Diseases:

Methylmalonic aciduria cblB



Dobson CM et al. (2002) Identification of the gene responsible for the cblB complementation group of vitamin B12-dependent methylmalonic aciduria.

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Jorge-Finnigan A et al. (2010) Functional and structural analysis of five mutations identified in methylmalonic aciduria cblB type.

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Brasil S et al. (2015) Methylmalonic aciduria cblB type: characterization of two novel mutations and mitochondrial dysfunction studies.

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Johnson CL et al. (2001) Functional genomic, biochemical, and genetic characterization of the Salmonella pduO gene, an ATP:cob(I)alamin adenosyltransferase gene.

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NCBI article

NCBI 326625 external link

OMIM.ORG article

Omim 607568 external link

Orphanet article

Orphanet ID 123296 external link

Wikipedia article

Wikipedia EN (MMAB) external link
Update: Aug. 14, 2020
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