Methylamine vanadate

Protoasomes are also found in cell nuclei, and we have recently localized a catalytic site on the eukaryotic 20S complex by first end-labeling the inhibitory amyloid /3 protein (made with a terminal cysteine) with Nanogold. This was shown to retain activity, and was visualized in the STEM, using methylamine vanadate, a negative stain (Gregori et al., 1997). 

Nmiojjold labeling reagents, silver developers, and methYlamine vanadate are available.]... 

Vanadium pentoxide dissolves in acids, both organic and inorganic, to form vanadyl or unstable vanadic salts,7 and in alkalis to produce ortho-, pyro-, meta-, and poly-vanadates. The physico-chemical changes involved when vanadium pentoxide is heated with various basic oxides in the powder state have been investigated by Tammann.8 On being digested with liquid ammonia slow absorption of ammonia takes place the composition of the product has not been definitely established.9 The oxide also dissolves in alcohols to produce esters,10 and combines with methylamine and ethylamine to form compounds of the type 2(R.NHB).V205, where R represents the alkyl radical.11... 

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