Protein Information

Name Cytochrome c oxidase (protein family or complex)
Synonyms COX; cytochrome c oxidase; cytochrome c oxidases

Compound Information

Name phosphine
CAS phosphine

Reference List

PubMed Abstract RScore(About this table)
19280425 Proudfoot AT: Aluminium and zinc phosphide poisoning. Clin Toxicol. 2009 Feb;47(2):89-100.

MECHANISMS OF TOXICITY: Both forms of poisoning are mediated by phosphine which has been thought to be toxic because it inhibits cytochrome c oxidase.
163(2,2,2,3) Details
15727053 Sudakin DL: Occupational exposure to aluminium phosphide and phosphine gas? A suspected case report and review of the literature. Hum Exp Toxicol. 2005 Jan;24(1):27-33.

Toxicodynamic effects of phosphine result from the inhibition of cytochrome c oxidase and subsequent generation of reactive oxygen species.
81(1,1,1,1) Details
18755236 Valmas N, Zuryn S, Ebert PR: Mitochondrial uncouplers act synergistically with the fumigant phosphine to disrupt mitochondrial membrane potential and cause cell death. Toxicology. 2008 Oct 30;252(1-3):33-9. Epub 2008 Aug 5.

As phosphine inhibits cytochrome c oxidase (complex IV) of the mitochondrial respiratory chain and reduces the strength of the mitochondrial membrane potential (DeltaPsi (m)), we reasoned that mitochondrial uncouplers should act synergistically with phosphine.
81(1,1,1,1) Details
16615671 Singh S, Bhalla A, Verma SK, Kaur A, Gill K: Cytochrome-c oxidase inhibition in 26 aluminum phosphide poisoned patients. Clin Toxicol. 2006;44(2):155-8.

In the presence of moisture, ALP liberates phosphine, which is highly toxic.
3(0,0,0,3) Details
16363808 Imriskova-Sosova I, Andrews D, Yam K, Davidson D, Yachnin B, Hill BC: Characterization of the redox and metal binding activity of BsSco, a protein implicated in the assembly of cytochrome c oxidase. Biochemistry. 2005 Dec 27;44(51):16949-56.

2(0,0,0,2) Details
18298114 Harkins SB, Mankad NP, Miller AJ, Szilagyi RK, Peters JC: Probing the electronic structures of [Cu2 (mu-XR2)] n+ diamond cores as a function of the bridging X atom (X = N or P) and charge (n = 0, 1, 2). J Am Chem Soc. 2008 Mar 19;130(11):3478-85. Epub 2008 Feb 26.

These dicopper complexes feature terminal phosphine and either bridging amido or phosphido donors, and as such their metal-ligand bonds are highly covalent.
The electronic structure picture that emerges for these inorganic dicopper diamond cores shares similarities with the Cu2 (mu-SR) 2 CuA sites of cytochrome c oxidases and nitrous oxide reductases.
1(0,0,0,1) Details