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 categorized as Causal (Pathogenic/Likely Pathogenic) or Unknown.
406
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Cobalamin C disease Likely pathogenic; Pathogenic rs118204046, rs1475458864, rs886039425, rs2467645025, rs141093638, rs755561981 RCV001844002
RCV003155743
RCV003155139
RCV003231053
RCV003226449
RCV001293569
Homocystinuria-megaloblastic anemia cblD type Likely pathogenic; Pathogenic rs118204044, rs118204045, rs118204046 RCV000000797
RCV000000798
RCV000000799
Isolated methylmalonic aciduria cblD type Pathogenic rs397509361, rs118204047, rs397509362 RCV004730831
RCV004730832
RCV004730833
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
RCV001951055
RCV001958633
RCV001972601
RCV001982023
RCV001974702
RCV003147271
RCV001378885
RCV000203371
RCV000203332
RCV000203341
RCV000000803
RCV000000804
RCV000000805
RCV002716105
RCV002695932
RCV002838925
RCV002842526
RCV003014016
RCV000203351
RCV000203370
RCV000203311
RCV003475537
RCV001833299
RCV004572893
RCV003461867
RCV003461868
RCV003461869
RCV003476511
RCV003470156
RCV003461870
RCV003470157
RCV003470158
RCV003461871
RCV003495430
RCV003496127
RCV003494642
RCV003496603
RCV003600522
RCV003602109
RCV003602410
RCV003602401
RCV003602423
RCV003849524
RCV004576195
RCV004576196
RCV004576197
RCV000576880
RCV000791752
RCV000802757
RCV001052184
RCV001038948
RCV001062359
RCV001234309
Unknown Diseases with uncertain, conflicting, or no pathogenic evidence in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Disorders of Intracellular Cobalamin Metabolism Conflicting classifications of pathogenicity; Benign; Uncertain significance; Likely benign rs141093638, rs11545261, rs549522925, rs138607412, rs147370143, rs546054980, rs147662711, rs6923, rs6742604, rs753424109, rs13402787, rs886054922, rs886054920, rs61746421, rs767542742
View all (20 more)
RCV001128816
RCV000401734
RCV001128927
RCV000259535
RCV000324144
RCV000286505
RCV000347488
RCV000400218
RCV000408333
RCV000312594
RCV000289849
RCV000295566
RCV000318431
RCV000390056
RCV000392417
RCV000264978
RCV000374959
RCV000305210
RCV000398902
RCV000353552
RCV000329546
RCV000320341
RCV000295930
RCV000304535
RCV000325834
RCV000335480
RCV001134453
RCV001131585
RCV001128809
RCV001128810
RCV001135921
RCV001128926
RCV001132636
RCV001128813
RCV001128814
Lung cancer Benign rs13402787 RCV005895950
MMADHC-related disorder Likely benign; Conflicting classifications of pathogenicity; Benign rs146820547, rs754142876, rs141093638, rs138607412, rs147370143, rs73965920, rs139369078, rs1553453945, rs376032730 RCV003923617
RCV003977477
RCV003927725
RCV003937770
RCV003947906
RCV003959500
RCV003959936
RCV003962798
RCV003953623
Ovarian serous cystadenocarcinoma Benign; Likely benign rs13402787, rs988301282 RCV005895948
RCV005897990
Associations from Text MiningDisease associations identified through Pubtator
Disease Name Relationship Type References
Autonomic Nervous System Diseases Stimulate 21248188
Cough Associate 21248188
Hereditary Sensory and Autonomic Neuropathies Stimulate 21248188
Homocystinuria Associate 15292234, 18385497, 22156578, 24722857, 26364851, 34083181
Homocystinuria Megaloblastic Anemia due to Defect in Cobalamin Metabolism CblE Complementation Type Inhibit 15292234
Homocystinuria Megaloblastic Anemia due to Defect in Cobalamin Metabolism CblE Complementation Type Associate 24722857
Methylmalonic acidemia Associate 15292234, 18385497, 22156578, 24722857, 26364851, 26420839, 29996803, 33453710
Methylmalonic acidemia with homocystinuria Associate 34655177
Methylmalonic Aciduria and Homocystinuria CblD Type Associate 18385497, 24722857, 26364851, 34083181
Methylmalonic aciduria cblB type Associate 15292234