Vitamin B12: Scientific Profile
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Vitamin B12 (Methylcobalamin) is a coenzyme essential to energy metabolism and neurological function, used to investigate DNA synthesis and erythropoiesis pathways in cellular and animal models.
Vitamin B12, specifically in its methylcobalamin form, represents a biologically active cofactor fundamental for the transfer of methyl groups. In the research setting, this compound is the object of study for its critical participation in the conversion of homocysteine to methionine through the enzyme methionine synthase, an essential step for genomic stability and epigenetic regulation. Its deficiency in experimental models is associated with alterations in the biosynthesis of nucleic acids and dysfunction of the mitochondrial respiratory chain.
Preclinical research has documented its importance in the preservation of the integrity of the myelin sheath and in the modulation of neuronal oxidative stress. The use of methylcobalamin in research protocols allows the analysis of the efficiency of cell division, particularly in hematopoietic lineages. Owing to its role in the synthesis of S-adenosylmethionine (SAMe), Vitamin B12 is an indispensable tool for the study of global DNA methylation.
This academic report highlights that the administration of this compound in controlled settings facilitates the understanding of the interaction between folate metabolism and nucleotide availability. In weight-reduction models, its role as an optimizing agent in fatty acid oxidation and the regulation of systemic energy balance is investigated.
Mechanism of action
Methylcobalamin acts as a coenzyme of methionine synthase in the cell cytosol. It facilitates the transfer of a methyl group from methyltetrahydrofolate to homocysteine, resulting in the formation of methionine and tetrahydrofolate. This process is vital for the synthesis of purines and pyrimidines. It also participates indirectly in the Krebs cycle through the conversion of methylmalonyl-CoA into succinyl-CoA, influencing lipid and protein metabolism.
Mechanism summary
It acts systemically as an enzymatic cofactor in transmethylation and nucleotide synthesis, essential for cell replication and mitochondrial metabolism.
Clinical Studies (4)
- Vitamin B12 deficiency (Stabler, et al. · The New England Journal of Medicine · 2013) PMID 23301732.
- Vitamin B12 Deficiency: Recognition and Management (Langan, et al. · American Family Physician · 2017) PMID 28925645.
- Vitamin B12 among Vegetarians: Status, Assessment and Supplementation (Pawlak, et al. · Nutrients · 2016) PMID 27916823.
- Vitamin B12 Deficiency: Common Questions and Answers (Patel H, et al. · American Family Physician · 2025) PMID 40961307.
Warnings
Vitamin B12 is a research-use-only (RUO) compound; the following warnings and handling considerations apply to its laboratory use:
- For laboratory and research use only
- Requires strict aseptic handling
- Avoid prolonged exposure to ultraviolet light (photosensitive)
- Biological models with hypersensitivity to cobalt
- Subjects with suspected Leber's disease (hereditary optic atrophy)
- Protocols with active polycythemia vera
Technical data
- CAS
- 13422-55-4
- Molecular formula
- C63H91CoN13O14P
- Molecular weight
- 1344.4 Da
- Compound type
- vitamin
- Storage
- 15-25°C lyophilized, protected from light
- Shelf life (lyophilized)
- 36 months
- Shelf life (reconstituted)
- 30 days refrigerated
- Light-sensitive
- Sí
Frequently asked questions about Vitamin B12
What is Vitamin B12?
Vitamin B12 (Methylcobalamin) is a coenzyme essential to energy metabolism and neurological function, used to investigate DNA synthesis and erythropoiesis pathways in cellular and animal models.
What is the mechanism of action of Vitamin B12?
It acts systemically as an enzymatic cofactor in transmethylation and nucleotide synthesis, essential for cell replication and mitochondrial metabolism.
What is Vitamin B12 researched for?
In preclinical research, Vitamin B12 is studied mainly in: Research on the synthesis and repair of DNA; Modulation of homocysteine metabolism; Study of neuroprotection and myelin regeneration. Material exclusively for scientific research.
What are the chemical properties of Vitamin B12?
Molecular formula C63H91CoN13O14P; molecular weight 1344.4 Da; CAS number 13422-55-4.
How is Vitamin B12 stored?
Storage conditions: 15-25°C lyophilized, protected from light; lyophilized stability: 36 months; once reconstituted: 30 days refrigerated; protect from light.
What routes of administration are studied for Vitamin B12?
In research models the following are described: Intramuscular, Subcutaneous. Use is exclusively for scientific research.