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A5251

Sigma-Aldrich

3-Acetylpyridine adenine dinucleotide

≥85%

Synonym(s):

3 -Acetyl NAD, APADH, APAD

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About This Item

Empirical Formula (Hill Notation):
C22H28N6O14P2
CAS Number:
Molecular Weight:
662.44
MDL number:
UNSPSC Code:
41106305
PubChem Substance ID:
NACRES:
NA.51

biological source

Porcine brain

Quality Level

Assay

≥85%

form

powder

solubility

water: 50 mg/mL, clear, colorless to faintly yellow

storage temp.

−20°C

SMILES string

CC(=O)c1ccc[n+](c1)[C@@H]2O[C@H](COP([O-])(=O)OP(O)(=O)OC[C@H]3O[C@H]([C@H](O)[C@@H]3O)n4cnc5c(N)ncnc45)[C@@H](O)[C@H]2O

InChI

1S/C22H28N6O14P2/c1-10(29)11-3-2-4-27(5-11)21-17(32)15(30)12(40-21)6-38-43(34,35)42-44(36,37)39-7-13-16(31)18(33)22(41-13)28-9-26-14-19(23)24-8-25-20(14)28/h2-5,8-9,12-13,15-18,21-22,30-33H,6-7H2,1H3,(H3-,23,24,25,34,35,36,37)/t12-,13-,15-,16-,17-,18-,21-,22-/m1/s1

InChI key

KPVQNXLUPNWQHM-RBEMOOQDSA-N

General description

3-Acetylpyridine adenine dinucleotide is a crystalline solid. 3-Acetylpyridine adenine dinucleotide is a prominent electron transporter in various enzymatic activities in which it is alternately oxidized. APAD has a more significant oxidation potential than NAD. NAD analogues, APAD, were electrochemically more effectively reduced than genuine NAD, and the stability of their reduced products was also significantly higher than NADH. In transhydrogenation processes with NADH or NADPH, APAD also operates as a proton acceptor.

Application

Many molecules use 3-Acetylpyridine adenine dinucleotide as a signaling molecule, cofactor, or substrate. Various dehydrogenase processes use APAD instead of NAD as a hydrogen-accepting cofactor. The oxidative phosphorylation can be studied with ADAP. ADAP can also be used as a suitable substrate.

Biochem/physiol Actions

APAD is an NAD analog with higher oxidation potential than NAD. It can substitute for NAD as a hydrogen-accepting cofactor in many dehydrogenase reactions; e.g. lactate dehydrogenase from Toxoplasma, Clonorchis, and Plasmodium, bacterial lipoamide dehydrogenase, as well as mammalian dehydrogenases. It can also act as a proton acceptor in various transhydrogenation reactions with NADH or NADPH.

Linkage

Analog of NAD

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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P D Bragg et al.
Archives of biochemistry and biophysics, 363(1), 182-190 (1999-03-02)
The pyridine nucleotide transhydrogenase carries out transmembrane proton translocation coupled to transfer of a hydride ion equivalent between NAD+ and NADP+. Previous workers (E. Holmberg et al. Biochemistry 33, 7691-7700, 1994; N. A. Glavas et al. Biochemistry 34, 7694-7702, 1995)
W A Prütz et al.
Archives of biochemistry and biophysics, 380(1), 181-191 (2000-07-20)
Degradation of the reduced pyridine nucleotides NMNH and NADH by HOCl involves two distinct stages: a fast reaction, k = 4.2 x 10(5) M(-1) s(-1), leads to generation of stable pyridine products (Py/Cl) with a strong absorption band at 275
M Yamaguchi et al.
Biochimica et biophysica acta, 1318(1-2), 225-234 (1997-01-16)
The hydrophilic, extramembranous domains I (alpha 1 subunit) and III of the Rhodospirillum rubrum nicotinamide nucleotide transhydrogenase were expressed in Escherichia coli and purified therefrom as soluble proteins. These domains bind NAD(H) and NADP(H). respectively, and together they form the
S N Stilwell et al.
Biochimica et biophysica acta, 1320(1), 83-94 (1997-05-16)
Transhydrogenase is a proton pump. It has separate binding sites for NAD+/NADH (on domain I of the protein) and for NADP+/NADPH (on domain III). Purified, detergent-dispersed transhydrogenase from Escherichia coli catalyses the reduction of the NAD+ analogue, acetylpyridine adenine dinucleotide
P D Bragg et al.
Biochimica et biophysica acta, 1365(3), 464-472 (1998-08-26)
The pyridine nucleotide transhydrogenase of Escherichia coli is a proton pump composed of two different subunits (alpha and beta) assembled as a tetramer (alpha 2 beta 2) in the cytoplasmic membrane. A series of mutants was generated in which the

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