What does the color of my protein solution mean?

Carlo Zambonelli via methods%40net.bio.net (by zambonel from gmail.com)
Mon Oct 30 13:24:58 EST 2006


A "blue" protein most likely contains a metal cofactor (i.e. iron)
coordinated to Tyr and possibly Asp or Glu and Cys.
Carlo

On 10/30/06, Pow Joshi <pow.joshi from gmail.com> wrote:
>
> On 10/30/06, Pow Joshi <pow.joshi from gmail.com> wrote:
> > On 10/27/06, Domo <rimask from yahoo.com> wrote:
> > > got HNO3?
> > > some acid? - neutralise using NaOH
> > >
> > > "Yang" <redondoself from gmail.com> wrote in message
> > > news:1161920815.218817.157860 from e3g2000cwe.googlegroups.com...
> > > > Hi,guys! I need your help!
> > > > I recently purified a protein. It is in yellow color.
> > > > What does the color mean?
> > > > Thank you in advance!
> > > >
> >
> > hi,
> >
> > was wondering what your starting material was...... long time ago we
> > had a blue protein, and it did'nt mean a thing...atleast not to me :))
>
> ...adding to my previous comment, if it's quite concentrated a
> fraction (it will be frothing a little as well), it might apprear as a
> pale yellow fluid ...(eg: albumin ) ..... it's just an observation
> ....
>
> >
> > best
> > pow
>
> > >
> > >
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> >
>
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