They entered the sequence of the gene that encoded the transporters in a genome data bank and saw that it closely matched the genes for
Rh proteins in humans.
«This is the first strong evidence for a biological role» for
Rh proteins, says hematologist Peter Agre of Johns Hopkins University.
Until now,
the Rh proteins that dot the surface of red blood cells were known for the problems they can cause for blood transfusions and pregnancy.
To find out whether
Rh proteins perform a similar function, the team knocked out ammonium transporter genes in yeast and replaced them with human Rh protein genes.
The link between
Rh proteins and ammonium transport was unexpected.
The first structure of an ammonia channel from the Amt / MEP /
Rh protein superfamily, determined to 1.35 angstrom resolution, shows it to be a channel that spans the membrane 11 times.
Not exact matches
85 % of our world population has this
RH + POSITIVE Factor in their blood type,,,, Its the RHesus Monkey Antigen /
Protein, for that is the ONLY reason anyone's blood type would be either O +, A +, B + or AB +.
Earlier in your pregnancy, your blood type and
Rh factor (a type of
protein in red blood cells) were determined.
Early in your pregnancy, you had a blood test to measure your
Rh factor, a
protein found in most people's red blood cells.
If you don't have these
proteins, you are
Rh negative.
The
Rh factor is a
protein that is found on the covering of the red blood cells.
The expert answers: «Having
Rh negative blood means that a
protein, the D antigen, is not present on the surface of the red blood cells.
If there is no
Rh factor
protein, the person is
Rh negative.
The D antigen is a
protein carried on the red blood cells of people who have
Rh positive blood types.
The mother may produce
proteins called
Rh antibodies.
According to the American Pregnancy Association, the
Rh factor is a specific type of
protein on the surface of red blood cells.
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