metabolism of cobalamin associated B
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A MMAB gene provides instructions for making an enzyme that is involved in the formation of a compound called adenosylcobalamin (AdoCbl). AdoCbl, which is derived from vitamin B12 (also known as cobalamin), is necessary for the normal function of another enzyme known as methylmalonyl CoA mutase. This enzyme helps break down certain proteins, fats (lipids), and cholesterol.
Normal function
A MMAB gene provides instructions for making an enzyme that is involved in the formation of a compound called adenosylcobalamin (AdoCbl). AdoCbl, which is derived from vitamin B12 (also known as cobalamin), is necessary for the normal function of another enzyme known as methylmalonyl CoA mutase. This enzyme helps break down certain proteins, fats (lipids), and cholesterol.
The MMAB enzyme is active in mitochondria, which are specialized structures inside cells that serve as energy-producing centers. Once vitamin B12 has been transported into mitochondria, the MMAB enzyme converts a form of the vitamin called cob(I)alamin to AdoCbl. Studies suggest that this enzyme may also deliver AdoCbl to methylmalonyl CoA mutase.
Conditions referring to this gene or chromosome
Other names
ATP:Cob(I)alamin Adenosyltransferase
ATR
cblB
CFAP23
cob(I)alamin adenosyltransferase
methylmalonic aciduria (cobalamin deficiency) cblB type
methylmalonic aciduria (cobalamin deficiency) type B
MMAB_HUMAN
Related patient information and medicines
Patient information leaflet
Posso tomar Ashwagandha e Vitamina B12 juntos?
They do not compete for absorption or interfere with each other's effects. Ashwagandha and Vitamin B12 (cobalamin) use different pathways in the body. Ashwagandha is primarily metabolised by liver enzymes, while Vitamin B12 is absorbed no small intestine and stored in the liver. How to take ashwagandha and vitamin B12 safely You can continue.
Patient information leaflet
Posso tomar Vitamina B12 e Vitamina B2 juntos?
There is no known harmful interaction between vitamin B12 (cobalamin) and vitamin B2 (riboflavin). In fact, these vitamins often work together to support your health. Why this happens Vitamin B12 and vitamin B2 are both water-soluble vitamins from the B-complex family. They do not interfere with each other's absorption, metabolism, or excretion..
Patient information leaflet
Posso tomar Levotiroxina e Vitamina B12 juntos?
They do not interfere with how each other works in the body, nor do they change how each other is absorbed or broken down. Why this happens Levothyroxine is a synthetic thyroid hormone absorbed in the small intestine, while vitamin B12 (cobalamin) is absorbed further down in the ileum with the help of 'intrinsic factor'. They use different.
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Patient information leaflet
Posso tomar Co-codamol e Hidroxocobalamina (Vitamina B12) juntos?
There are no known interactions between co-codamol and hydroxocobalamin. It is generally safe to take these two medications together. Why this happens Co-codamol (a combination of paracetamol and codeine) and hydroxocobalamin (Vitamin B12) are processed by the body through different pathways. They do not interfere with each other's absorption,.
Patient information leaflet
Posso tomar Hidroxocobalamina e Lipitor juntos?
Existem no known interactions between hydroxocobalamin (Vitamin B12) and Lipitor (atorvastatin). It is safe to take these two medications together. Why this happens These medications are processed by different pathways in the body. Hydroxocobalamin is a synthetic form of Vitamin B12 used para treat deficiencies, while Lipitor is a statin used to.
Patient information leaflet
Posso tomar Hidroxocobalamina e Stexerol D3 juntos?
There are no known harmful interactions between hydroxocobalamin and Stexerol-D3. It is safe to take these two medications together. Why this happens Hydroxocobalamin é a form of Vitamin B12, and Stexerol-D3 is a brand of Vitamin D3 (cholecalciferol). These vitamins are processed by different pathways in the body and do not interfere with each.
Leitura adicional e referências
- metabolism of cobalamin associated B; MedlinePlus, National Library of Medicine.
- Chandler RJ, Venditti CP. Genetic and genomic systems to study methylmalonic acidemia. Mol Genet Metab. 2005 Sep-Oct;86(1-2):34-43. doi: 10.1016/j.ymgme.2005.07.020. Epub 2005 Sep 22.
- Dobson CM, Wai T, Leclerc D, Kadir H, Narang M, Lerner-Ellis JP, Hudson TJ, Rosenblatt DS, Gravel RA. Identification of the gene responsible for the cblB complementation group of vitamin B12-dependent methylmalonic aciduria. Hum Mol Genet. 2002 Dec 15;11(26):3361-9. doi: 10.1093/hmg/11.26.3361.
- Horster F, Baumgartner MR, Viardot C, Suormala T, Burgard P, Fowler B, Hoffmann GF, Garbade SF, Kolker S, Baumgartner ER. Long-term outcome in methylmalonic acidurias is influenced by the underlying defect (mut0, mut-, cblA, cblB). Pediatr Res. 2007 Aug;62(2):225-30. doi: 10.1203/PDR.0b013e3180a0325f.
- Leal NA, Olteanu H, Banerjee R, Bobik TA. Human ATP:Cob(I)alamin adenosyltransferase and its interaction with methionine synthase reductase. J Biol Chem. 2004 Nov 12;279(46):47536-42. doi: 10.1074/jbc.M405449200. Epub 2004 Aug 30.
- Leal NA, Park SD, Kima PE, Bobik TA. Identification of the human and bovine ATP:Cob(I)alamin adenosyltransferase cDNAs based on complementation of a bacterial mutant. J Biol Chem. 2003 Mar 14;278(11):9227-34. doi: 10.1074/jbc.M212739200. Epub 2003 Jan 3.
- Lerner-Ellis JP, Gradinger AB, Watkins D, Tirone JC, Villeneuve A, Dobson CM, Montpetit A, Lepage P, Gravel RA, Rosenblatt DS. Mutation and biochemical analysis of patients belonging to the cblB complementation class of vitamin B12-dependent methylmalonic aciduria. Mol Genet Metab. 2006 Mar;87(3):219-25. doi: 10.1016/j.ymgme.2005.11.011. Epub 2006 Jan 10.
- Manoli I, Sloan JL, Venditti CP. Isolated Methylmalonic Acidemia. 2005 Aug 16 [updated 2022 Sep 8]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK1231/
- Zhang J, Dobson CM, Wu X, Lerner-Ellis J, Rosenblatt DS, Gravel RA. Impact of cblB mutations on the function of ATP:cob(I)alamin adenosyltransferase in disorders of vitamin B12 metabolism. Mol Genet Metab. 2006 Apr;87(4):315-22. doi: 10.1016/j.ymgme.2005.12.003. Epub 2006 Jan 24.
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