A9378
L-Amino Acid Oxidase from Crotalus adamanteus
Type IV, ≥4.0 units/mg protein, aqueous suspension
Synonym(s):
L-AAO, L-Amino acid:oxygen oxidoreductase (deaminating)
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About This Item
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type
Type IV
form
aqueous suspension
specific activity
≥4.0 units/mg protein
mol wt
~130 kDa
contains
toluene as preservative
concentration
≥5.0 mg/mL
solubility
H2O: soluble 1.0 mg/mL, clear
storage temp.
2-8°C
Application
L-amino acid oxidase (LAAO) is used to convert L-amino acids to their corresponding α-keto acids. L-amino acid oxidase, from Sigma, has been used in leucine aminopeptidase (LAP) activity assays. 35S dimethylsulfoniopropionate (DMSP) has been synthesized chemically from 35S L-methionine using LAAO from Sigma to form 35S 3-methiolpropionate.
Biochem/physiol Actions
L-Amino acid oxidase is a flavoprotein with a molecular weight of 130 kDa. It consists of two different subunits of approximately 70,000 Da. Each molecule of holoenzyme has two FAD molecules. It is a glycoprotein containing about 2-5% carbohydrate, including sialic acid. Optimum pH is approximately 7.5.The enzyme may be reversibly inactivated by incubation in phosphate buffer, pH 7.5 at 38 °C. L-amino acid oxidase is involved in various metabolic pathways such as alanine and aspartate metabolism, methionine metabolism, valine, leucine and isoleucine degradation, tyrosine metabolism, phenylalanine metabolism, tryptophan metabolism, phenylalanine, tyrosine and tryptophan biosynthesis, and alkaloid biosynthesis. It occurs in many snake venoms apart from microorganisms and animal tissue, especially in kidney and liver.
Packaging
Package size based on protein content
Unit Definition
One Unit oxidizes one micromole of L-leucine per minute at 25 °C, pH 7.6
Preparation Note
Dissolves in water at 1 mg/mL concentration to form a clear solution.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 1 Inhalation - Acute Tox. 2 Dermal - Acute Tox. 2 Oral
Storage Class Code
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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Identification and enumeration of bacteria assimilating dimethylsulfoniopropionate (DMSP) in the North Atlantic and Gulf of Mexico
Malmstrom RR, et al.
Limnology and Oceanography, 49(2), 597-606 (2004)
Stefania Digiovanni et al.
Scientific reports, 10(1), 10135-10135 (2020-06-25)
Reactive Intermediate Deaminase (Rid) protein superfamily includes eight families among which the RidA is conserved in all domains of life. RidA proteins accelerate the deamination of the reactive 2-aminoacrylate (2AA), an enamine produced by some pyridoxal phosphate (PLP)-dependent enzymes. 2AA
Jiro Arima et al.
The Journal of biological chemistry, 281(9), 5885-5894 (2006-01-13)
Streptomyces griseus leucine aminopeptidase (SGAP), which has two zinc atoms in its active site, is clinically important as a model for understanding the structure and mechanism of action of other metallopeptidases. SGAP is a calcium-activated and calcium-stabilized enzyme, and its
Ko-Chun Ko et al.
Antimicrobial agents and chemotherapy, 56(4), 1725-1734 (2012-01-11)
The marine snail Aplysia californica produces escapin, an L-amino acid oxidase, in its defensive ink. Escapin uses L-lysine to produce diverse products called escapin intermediate products of L-lysine (EIP-K), including α-amino-ε-caproic acid, Δ¹-piperidine-2-carboxylic acid, and Δ²-piperidine-2-carboxylic acid. EIP-K and H₂O₂
R L Hanson et al.
Enzyme and microbial technology, 48(6-7), 445-453 (2011-11-25)
N-Cbz-4,5-dehydro-L-prolineamide or N-Boc-4,5-dehydro-L-prolineamide are alternative key intermediates for the synthesis of saxagliptin, a dipeptidyl peptidase IV (DPP4) inhibitor recently approved for treatment of type 2 diabetes mellitus. An efficient biocatalytic method was developed for conversion of L-ornithine, N-α-benzyloxycarbonyl (Cbz)-L-ornthine, and
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