Phosphinothricin Property

Melting point:

229-231° (dec)

Boiling point:

519.1±45.0 °C(Predicted)

Density 

1.378±0.06 g/cm3(Predicted)

solubility 

Aqueous Acid (Slightly), Methanol (Very Slightly, Sonicated), Water (Slightly)

pka

2.22±0.10(Predicted)

form 

Solid

color 

White to Light Beige

Stability:

Hygroscopic

LogP

-0.750 (est)

EPA Substance Registry System

Butanoic acid, 2-amino-4-(hydroxymethylphosphinyl)- (51276-47-2)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H312Harmful in contact with skin

H360May damage fertility or the unborn child

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P314Get medical advice/attention if you feel unwell.

P322Specific measures (see …on this label).

P330Rinse mouth.

P363Wash contaminated clothing before reuse.

P501Dispose of contents/container to..…

Phosphinothricin Chemical Properties,Usage,Production

Definition

ChEBI: 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid is a non-proteinogenic alpha-amino acid that is 2-aminobutanoic acid which is substituted at position 4 by a hydroxy(methyl)phosphoryl group. It is a member of phosphinic acids and a non-proteinogenic alpha-amino acid.

Enzyme inhibitor

This dephospho transition-state analogue (FW = 177.10 g/mol; CAS 51276- 47-2) is naturally occurring glutamate analogue, first isolated from Streptomyces viridochromogenes. Phosphonothricin is a slow, tight-binding inhibitor of glutamine synthetase that binds at the glutamate binding site and stabilizes the flap of a glutamyl residue in a position blocking glutamate entry into the active site, thereby trapping the inhibitor on the enzyme. Phosphinothricin undergoes an ATP-dependent phosphorylation. Note: Phosphinothricin is a component of the antibiotics bialaphos and phosalacine. The monoammonium salt of the racemic compound, also called glufosinate-ammonium, is a post-emergent herbicide.

Metabolic pathway

When 14C-phosphinothricin [homoalanin-4-yl- (methyl)phosphinic acid] is incubated in the cell suspension cultures of soybean, wheat, and maize, in maize cells which take up to 50% of the applied radioactivity, four different metabolites are detected which are identified as 4-methylphosphinico-2-oxo- butyric acid, 4-methylphosphinico-2-hydroxybutyric acid, 4-methylphosphinicobutyric acid, and 3- methylphosphinicopropionic acid. In soybean and wheat cultures, 10 and 6% of the applied radioactivity is taken up, respectively. In soybean, only one metabolite, 3-methylphosphinicopropionic acid, is detected, whereas in wheat, 4-methyl- phosphinicobutyric acid is additionally present.