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Merck

C0884

Coenzyme B12

≥97.0%

Synonyme(s) :

5′-Deoxyadenosylcobalamine, Adenosyl cobalamine, Cobamamide, DMBC coenzyme

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A propos de cet article

Formule empirique (notation de Hill) :
C72H100CoN18O17P
Numéro CAS:
Poids moléculaire :
1579.58
UNSPSC Code:
12352205
NACRES:
NA.79
PubChem Substance ID:
EC Number:
237-627-6
Beilstein/REAXYS Number:
4122932
MDL number:
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InChI key

ZIHHMGTYZOSFRC-PMDPKNCCSA-L

InChI

1S/C62H90N13O14P.C10H12N5O3.Co/c1-29-20-39-40(21-30(29)2)75(28-70-39)57-52(84)53(41(27-76)87-57)89-90(85,86)88-31(3)26-69-49(83)18-19-59(8)37(22-46(66)80)56-62(11)61(10,25-48(68)82)36(14-17-45(65)79)51(74-62)33(5)55-60(9,24-47(67)81)34(12-15-43(63)77)38(71-55)23-42-58(6,7)35(13-16-44(64)78)50(72-42)32(4)54(59)73-56;1-4-6(16)7(17)10(18-4)15-3-14-5-8(11)12-2-13-9(5)15;/h20-21,23,28,31,34-37,41,52-53,56-57,76,84H,12-19,22,24-27H2,1-11H3,(H15,63,64,65,66,67,68,69,71,72,73,74,77,78,79,80,81,82,83,85,86);2-4,6-7,10,16-17H,1H2,(H2,11,12,13);/q;;+2/p-2/t31?,34?,35?,36?,37?,41-,52-,53-,56?,57+,59?,60?,61?,62?;4-,6-,7-,10+;/m11./s1

SMILES string

CC(CNC(=O)CCC1(C)C(CC(N)=O)C2N([Co+]C[C@H]3O[C@@H]([C@H](O)[C@@H]3O)n4cnc5c(N)ncnc45)C1=C(C)C6=NC(=CC7=NC(=C(C)C8=NC2(C)C(C)(CC(N)=O)C8CCC(N)=O)C(C)(CC(N)=O)C7CCC(N)=O)C(C)(C)C6CCC(N)=O)OP([O-])(=O)O[C@H]9[C@@H](O)[C@H](O[C@@H]9CO)n%10cnc%11cc(C)c(C)cc%10%11

assay

≥97.0%

form

powder and chunks

technique(s)

HPLC: suitable

color

red to very dark red, very dark red-brown

storage temp.

−20°C

Quality Level

General description

Vitamin B12 cobalamin refers to a group of chemically-related cobalt containing molecules. The physiologically active forms of vitamin B12 include methylcobalamin and adenosylcobalamin, whereas hydroxocobalamin (vitamin B12a, OHCbl) and cyanocobalamin (CNCbl) are storage and delivery forms.

Application

Coenzyme B12 has been used as a supplement for culturing plasmid variants in in vivo assay of yvrC-lacZ fusions.

Biochem/physiol Actions

Vitamin B12 cobalamin is involved in DNA synthesis and fatty acid synthesis. It also plays a vital role as a coenzyme in the conversion of mitochondrial methylmalonyl co-enzyme A to succinyl co-enzyme A.

Classe de stockage

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Consulter la Bibliothèque de documents

Denis Bucher et al.
Journal of the American Chemical Society, 134(3), 1591-1599 (2012-01-11)
Vitamin B(12) and its biologically active counterparts possess the only examples of carbon-cobalt bonds in living systems. The role of such motifs as radical reservoirs has potential application in future catalytic and electronic nanodevices. To fully understand radical generation in
Alla Peselis et al.
Nature structural & molecular biology, 19(11), 1182-1184 (2012-10-16)
Coenzyme B(12) has a key role in various enzymatic reactions and controls expression of bacterial genes through riboswitches. Here we report the crystal structure of the Symbiobacterium thermophilum B(12) riboswitch bound to its ligand adenosylcobalamin. The riboswitch forms a unique
J R Roth et al.
Annual review of microbiology, 50, 137-181 (1996-01-01)
This review examines deoxyadenosylcobalamin (Ado-B12) biosynthesis, transport, use, and uneven distribution among living forms. We describe how genetic analysis of enteric bacteria has contributed to these issues. Two pathways for corrin ring formation have been found-an aerobic pathway (in P.
Jiayun Pang et al.
Journal of the American Chemical Society, 134(4), 2367-2377 (2012-01-14)
We present here an energetic and atomistic description of how D-ornithine 4,5-aminomutase (OAM), an adenosylcobalamin (AdoCbl; coenzyme B(12))-dependent isomerase, employs a large-scale protein domain conformational change to orchestrate the homolytic rupture of the Co-C bond. Our results suggest that in
Radical catalysis in coenzyme B12-dependent isomerization (eliminating) reactions.
Tetsuo Toraya
Chemical reviews, 103(6), 2095-2127 (2003-06-12)

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