Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
MMAB
Introduction
Cob(I)yrinic acid a,c-diamide adenosyltransferase, mitochondrial is an enzyme that in humans is encoded by the MMAB gene.[1][2][3]
Function
Function
This gene encodes an enzyme (cob(I)yrinic acid a,c-diamide adenosyltransferase) that catalyzes the final step in the conversion of vitamin B12 into adenosylcobalamin (AdoCbl), a vitamin B12-containing coenzyme for methylmalonyl-CoA mutase.[3]
Clinical significance
Clinical significance
Mutations in the gene are the cause of vitamin B12-dependent methylmalonic aciduria linked to the cblB complementation group.[3]
References
References
- ↑ Dobson CM, Wai T, Leclerc D, Kadir H, Narang M, Lerner-Ellis JP, Hudson TJ, Rosenblatt DS, Gravel RA (Dec 2002). “Identification of the gene responsible for the cblB complementation group of vitamin B12-dependent methylmalonic aciduria”. Hum Mol Genet. 11 (26): 3361–9. doi:10.1093/hmg/11.26.3361. PMID 12471062.
- ↑ Leal NA, Park SD, Kima PE, Bobik TA (Mar 2003). “Identification of the human and bovine ATP:Cob(I)alamin adenosyltransferase cDNAs based on complementation of a bacterial mutant”. J Biol Chem. 278 (11): 9227–34. doi:10.1074/jbc.M212739200. PMID 12514191.
- ↑ 3.0 3.1 3.2 “Entrez Gene: MMAB methylmalonic aciduria (cobalamin deficiency) cblB type”.
Further reading
Further reading
- Willer CJ, Sanna S, Jackson AU, et al. (2008). “Newly identified loci that influence lipid concentrations and risk of coronary artery disease”. Nat. Genet. 40 (2): 161–9. doi:10.1038/ng.76. PMC 5206900. PMID 18193043.
- Hörster F, Baumgartner MR, Viardot C, et al. (2007). “Long-term outcome in methylmalonic acidurias is influenced by the underlying defect (mut0, mut-, cblA, cblB)”. Pediatr. Res. 62 (2): 225–30. doi:10.1203/PDR.0b013e3180a0325f. PMID 17597648.
- Keeratichamroen S, Cairns JR, Sawangareetrakul P, et al. (2007). “Novel mutations found in two genes of thai patients with isolated methylmalonic acidemia”. Biochem. Genet. 45 (5–6): 421–30. doi:10.1007/s10528-007-9085-y. PMID 17410422.
- Kimura K, Wakamatsu A, Suzuki Y, et al. (2006). “Diversification of transcriptional modulation: large-scale identification and characterization of putative alternative promoters of human genes”. Genome Res. 16 (1): 55–65. doi:10.1101/gr.4039406. PMC 1356129. PMID 16344560.
- MartÃnez MA, Rincón A, Desviat LR, et al. (2005). “Genetic analysis of three genes causing isolated methylmalonic acidemia: identification of 21 novel allelic variants”. Mol. Genet. Metab. 84 (4): 317–25. doi:10.1016/j.ymgme.2004.11.011. PMID 15781192.
- Gerhard DS, Wagner L, Feingold EA, et al. (2004). “The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)”. Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
- Leal NA, Olteanu H, Banerjee R, Bobik TA (2005). “Human ATP:Cob(I)alamin adenosyltransferase and its interaction with methionine synthase reductase”. J. Biol. Chem. 279 (46): 47536–42. doi:10.1074/jbc.M405449200. PMID 15347655.
- Strausberg RL, Feingold EA, Grouse LH, et al. (2003). “Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences”. Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
- Robertson NG, Khetarpal U, Gutiérrez-Espeleta GA, et al. (1995). “Isolation of novel and known genes from a human fetal cochlear cDNA library using subtractive hybridization and differential screening”. Genomics. 23 (1): 42–50. doi:10.1006/geno.1994.1457. PMID 7829101.