Gene Gene information from NCBI Gene database.
Entrez ID 27249
Gene name Metabolism of cobalamin associated D
Gene symbol MMADHC
Synonyms (NCBI Gene)
C2orf25CL25022HMADMACDMAHCDcblD
Chromosome 2
Chromosome location 2q23.2
Summary This gene encodes a mitochondrial protein that is involved in an early step of vitamin B12 metabolism. Vitamin B12 (cobalamin) is essential for normal development and survival in humans. Mutations in this gene cause methylmalonic aciduria and homocystinur
SNPs SNP information provided by dbSNP.
20
SNP ID Visualize variation Clinical significance Consequence
rs118204044 A>G Pathogenic Coding sequence variant, missense variant
rs118204045 G>T Pathogenic Coding sequence variant, missense variant
rs118204046 T>C Pathogenic Coding sequence variant, missense variant
rs118204047 G>A,C Pathogenic Stop gained, coding sequence variant, missense variant
rs118204048 G>A Pathogenic Stop gained, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
261
miRTarBase ID miRNA Experiments Reference
MIRT044302 hsa-miR-106b-5p CLASH 23622248
MIRT707492 hsa-miR-5580-3p HITS-CLIP 21572407
MIRT695168 hsa-miR-1272 HITS-CLIP 21572407
MIRT695167 hsa-miR-1322 HITS-CLIP 21572407
MIRT530723 hsa-miR-95-5p HITS-CLIP 21572407
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
14
GO ID Ontology Definition Evidence Reference
GO:0005515 Function Protein binding IPI 23415655, 27771510, 32296183
GO:0005737 Component Cytoplasm IDA 23270877
GO:0005737 Component Cytoplasm IEA
GO:0005739 Component Mitochondrion HTP 34800366
GO:0005739 Component Mitochondrion IBA
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
611935 25221 ENSG00000168288
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
Q9H3L0
Protein name Cobalamin trafficking protein CblD (CblD) (Methylmalonic aciduria and homocystinuria type D protein, mitochondrial)
Protein function Involved in cobalamin metabolism and trafficking (PubMed:18385497, PubMed:23415655, PubMed:24722857, PubMed:26364851). Plays a role in regulating the biosynthesis and the proportion of two coenzymes, methylcob(III)alamin (MeCbl) and 5'-deoxyaden
PDB 5CUZ , 5CV0 , 6X8Z
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF10229 MMADHC 24 294 Methylmalonic aciduria and homocystinuria type D protein Family
Tissue specificity TISSUE SPECIFICITY: Widely expressed at high levels. {ECO:0000269|PubMed:18385497}.
Sequence
Sequence length 296
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Cobalamin transport and metabolism   Cobalamin (Cbl, vitamin B12) transport and metabolism
Defective MMADHC causes methylmalonic aciduria and homocystinuria type cblD
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
18
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Cobalamin C disease Likely pathogenic; Pathogenic rs118204046, rs1475458864, rs886039425, rs2467645025, rs141093638, rs755561981 RCV001844002
RCV003155743
RCV003155139
RCV003231053
RCV003226449
View all (1 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Homocystinuria-megaloblastic anemia cblD type Likely pathogenic; Pathogenic rs118204044, rs118204045, rs118204046 RCV000000797
RCV000000798
RCV000000799
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Isolated methylmalonic aciduria cblD type Pathogenic rs397509361, rs118204047, rs397509362 RCV004730831
RCV004730832
RCV004730833
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Methylmalonic aciduria and homocystinuria type cblD Likely pathogenic; Pathogenic rs2105042238, rs755561981, rs1385597423, rs2105042265, rs764179800, rs2105048127, rs2105045491, rs1162948308, rs2105042210, rs1431992617, rs118204044, rs118204046, rs397509361, rs118204047, rs397509362
View all (41 more)
RCV001877971
RCV001964039
RCV001977150
RCV001958800
RCV002000507
View all (53 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
CHILDHOOD ACUTE LYMPHOBLASTIC LEUKEMIA GWAS catalog
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
DISORDER OF COBALAMIN METABOLISM AND TRANSPORT Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Disorders of Intracellular Cobalamin Metabolism Conflicting classifications of pathogenicity; Benign; Uncertain significance; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
HOMOCYSTINURIA-MEGALOBLASTIC ANEMIA, CBLD TYPE HPO
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Anemia, Megaloblastic Anemia HPO_DG
★☆☆☆☆
Found in Text Mining only
Anorexia Anorexia HPO_DG
★☆☆☆☆
Found in Text Mining only
Autonomic Nervous System Diseases Autonomic nervous system disease Pubtator 21248188 Stimulate
★☆☆☆☆
Found in Text Mining only
Cerebral cortical atrophy Cerebral cortical atrophy HPO_DG
★☆☆☆☆
Found in Text Mining only
Cough Cough Pubtator 21248188 Associate
★☆☆☆☆
Found in Text Mining only
Global developmental delay Developmental Delay HPO_DG
★☆☆☆☆
Found in Text Mining only
Hereditary Sensory and Autonomic Neuropathies Hereditary sensory and autonomic neuropathy Pubtator 21248188 Stimulate
★☆☆☆☆
Found in Text Mining only
Homocystinuria Homocystinuria Pubtator 15292234, 18385497, 22156578, 24722857, 26364851, 34083181 Associate
★☆☆☆☆
Found in Text Mining only
Homocystinuria Homocystinuria BEFREE 18385497, 19058814
★☆☆☆☆
Found in Text Mining only
Homocystinuria Homocystinuria HPO_DG
★☆☆☆☆
Found in Text Mining only