Gene Gene information from NCBI Gene database.
Entrez ID 166785
Gene name Metabolism of cobalamin associated A
Gene symbol MMAA
Synonyms (NCBI Gene)
cblA
Chromosome 4
Chromosome location 4q31.21
Summary The protein encoded by this gene is involved in the translocation of cobalamin into the mitochondrion, where it is used in the final steps of adenosylcobalamin synthesis. Adenosylcobalamin is a coenzyme required for the activity of methylmalonyl-CoA mutas
SNPs SNP information provided by dbSNP.
58
SNP ID Visualize variation Clinical significance Consequence
rs104893846 C>T Pathogenic 5 prime UTR variant, stop gained, coding sequence variant
rs104893849 A>G Pathogenic Missense variant, coding sequence variant
rs104893851 C>T Pathogenic 5 prime UTR variant, stop gained, coding sequence variant
rs140356252 T>A,C Likely-pathogenic Missense variant, stop gained, coding sequence variant
rs150376474 G>A Pathogenic Coding sequence variant, missense variant
miRNA miRNA information provided by mirtarbase database.
217
miRTarBase ID miRNA Experiments Reference
MIRT1152712 hsa-miR-125a-3p CLIP-seq
MIRT1152713 hsa-miR-1276 CLIP-seq
MIRT1152714 hsa-miR-1297 CLIP-seq
MIRT1152715 hsa-miR-1302 CLIP-seq
MIRT1152716 hsa-miR-1305 CLIP-seq
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
23
GO ID Ontology Definition Evidence Reference
GO:0000166 Function Nucleotide binding IEA
GO:0003924 Function GTPase activity IBA
GO:0003924 Function GTPase activity IDA 20876572, 21138732, 28943303
GO:0003924 Function GTPase activity IEA
GO:0003924 Function GTPase activity IMP 28497574
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
607481 18871 ENSG00000151611
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
Q8IVH4
Protein name Methylmalonic aciduria type A protein, mitochondrial (EC 3.6.-.-)
Protein function GTPase, binds and hydrolyzes GTP (PubMed:20876572, PubMed:21138732, PubMed:28497574, PubMed:28943303). Involved in intracellular vitamin B12 metabolism, mediates the transport of cobalamin (Cbl) into mitochondria for the final steps of adenosylc
PDB 2WWW , 8GJU
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF03308 MeaB 101 384 Domain
Tissue specificity TISSUE SPECIFICITY: Widely expressed. Highest expression is observed in liver and skeletal muscle.
Sequence
Sequence length 418
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 MMAA causes methylmalonic aciduria type cblA
Defective MUT causes methylmalonic aciduria mut type
Propionyl-CoA catabolism
Associated diseases Disease associations from ClinVar categorized as Causal (Pathogenic/Likely Pathogenic) or Unknown.
582
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Methylmalonic acidemia Likely pathogenic; Pathogenic rs200577967, rs104893846, rs104893851, rs796051992, rs796051993, rs571038432, rs765799472, rs140356252, rs864309730, rs1728076436, rs1029096863, rs757548934, rs754973022, rs1553957931 RCV003388009
RCV003155012
RCV000587855
RCV001420837
RCV000780425
RCV001193917
RCV000590153
RCV001804942
RCV002509299
RCV004579650
RCV001193915
RCV000586897
RCV001193916
RCV003155263
Methylmalonic aciduria of the cblA complementation type Likely pathogenic; Pathogenic rs1553957883 RCV001250250
Methylmalonic aciduria, cblA type Pathogenic; Likely pathogenic rs398124552, rs200577967, rs1489525542, rs941689476, rs2126619930, rs760875006, rs2126617138, rs2126627182, rs1340736923, rs2126622813, rs2546339507, rs2546342963, rs2546337480, rs2546339598, rs2546339447
View all (103 more)
RCV000509023
RCV001386117
RCV001928572
RCV001974286
RCV002014753
RCV001942196
RCV001900507
RCV001958644
RCV002041912
RCV001931901
RCV002306526
RCV002306793
RCV002309695
RCV002309798
RCV002310030
RCV002308001
RCV002308323
RCV002310544
RCV002308417
RCV000003307
RCV000003308
RCV000003309
RCV000003310
RCV002651851
RCV002635315
RCV000671866
RCV000203312
RCV000203343
RCV002694797
RCV002705705
RCV002780566
RCV002833163
RCV002815258
RCV002853415
RCV002903527
RCV002914821
RCV000203329
RCV000203357
RCV000203404
RCV000203366
RCV000203403
RCV000203380
RCV000203317
RCV000203334
RCV000203378
RCV000203316
RCV000203388
RCV000210831
RCV000210840
RCV003143984
RCV003470126
RCV003470128
RCV003470129
RCV003470130
RCV003470131
RCV003470132
RCV003470135
RCV003470136
RCV003461859
RCV003476510
RCV003461860
RCV003470137
RCV003470138
RCV003470139
RCV003470140
RCV003500866
RCV003501696
RCV003500324
RCV003607638
RCV003608039
RCV003608258
RCV003608371
RCV003608367
RCV003607064
RCV003989428
RCV004574882
RCV004574883
RCV005023583
RCV000509025
RCV000509034
RCV000509042
RCV000509026
RCV000509035
RCV000509018
RCV000509030
RCV000509037
RCV000509020
RCV000509038
RCV000509021
RCV000509028
RCV000509039
RCV000509022
RCV000509031
RCV000509040
RCV000509032
RCV000545383
RCV000552652
RCV001240486
RCV000666843
RCV000667589
RCV000666170
RCV000672172
RCV000674400
RCV000664553
RCV000669744
RCV000673653
RCV000670340
RCV000669805
RCV000672980
RCV000664890
RCV000670314
RCV000669403
RCV000671130
RCV000699106
RCV000690978
RCV001053481
RCV001052056
RCV001169965
RCV001234942
RCV001235874
RCV001263970
MMAA-related disorder Likely pathogenic; Pathogenic rs2126622813, rs104893851, rs796051992, rs796051993 RCV003401788
RCV003421899
RCV003401020
RCV004752785
Unknown Diseases with uncertain, conflicting, or no pathogenic evidence in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Cataract Conflicting classifications of pathogenicity rs1328584680 RCV000627007
Clear cell carcinoma of kidney Uncertain significance rs138854691 RCV005896799
Lung cancer Uncertain significance rs138854691 RCV005896800
Methylmalonic aciduria, cblB type not provided rs796064514 RCV000190396
Associations from Text MiningDisease associations identified through Pubtator
Disease Name Relationship Type References
Acidemia isovaleric Stimulate 24059531
Colonic Neoplasms Associate 33028275
Dimauro disease Associate 32754920
Glutamate formiminotransferase deficiency Associate 24095221
Hypomagnesemia 5 Renal with Ocular Involvement Associate 33453710
Intellectual Disability Associate 33453710
Kidney Failure Chronic Inhibit 32754920
Metabolic Diseases Associate 28497574, 32754920
Metabolism Inborn Errors Associate 10882753
Methylmalonic acidemia Associate 12438653, 17728257, 20876572, 22614770, 26420839, 28497574, 28536607, 29996803, 31056463, 31793236, 33453710, 37468522, 39523381