HEMOGLOBIN Flashcards
identified the respiratory hemoglobin
Felix Seyler in 1862
discovered the characteristics color spectrum of hemoglobin
proved that this was a true coloring matter of the blood
Felix Seyler in 1862
first protein whose structure was described using ___________
X ray crystallography
transport oxygen from ___________
lungs to tissues
transport carbon dioxide from
tissues to lungs for exhalation
contributes acid-base balance
by binding and releasing hydrogen ions and transport nitric oxide
__________ of cytoplasmic RBC content
95%
1 RBC contain approx ________
270 biomoleules of hemoglobin
1 hemoglobin can carry _______
4 oxygen molecules
________ provides protection to the hgb
RBC
Molecule weight is approx _______
64,000 daltons
the concentration of hemoglobin within RBCs is approximately ________
34/gdl
usually referred to as being a ____________
tetrahedral structure
make up of four subunits each containing a _____ and ________
heme group and polypeptide chain
described to be a protein with a ____________
very complex structure
hemoglobin structure
Heme - _______ + ________
Globin - ____________
iron + protoporphyrin
polypeptide chain
- alpha and beta chain
globin portion
2 alpha and 2 beta chains
heme portion
iron
protoporphyrin ring
hemoglobin structure
contains __________
__________________ of ferrous iron
ferrous iron combines with _____________
contains protoporphyrin IX
central atom of ferrous iron
ferrous iron combines with one oxygen molecule
heme biosynthesis occurs in the ____________ and ________________ beginning with the _____________ through the circulation of ____________
mitochondria and cytoplasm of bone marrow
pronormoblast and polychromatic
heme biosynthesis occurs in most cells except for _________________
mature erythrocytes
________________ are most predominant heme
red bone marrow and liver
occurs in the mitochondria and cytoplasm Bm
heme biosynthesis
______________ - initial reaction and last three steps
mitochondria
intermediate or 4 steps
cytoplasm
___________ do not have mitochondria and can’t make heme
mature rbcs
___________ provide unique DNA codes for each globin type.
chromosome 11 and 16
chains are designated by 7 greek letters
Alpha
beta
gamma
delta
epsilon
zeta
theta
____________ has a positive charge
alpha chain
has the highest affinity for beta chain due to its negative charge
alpha charge
________________ has the next highest affinity
gamma globin chain
next to gamma globin
delta globin chain
two heterodimers then combine to form a tetramer
globin
alpha has _________ amino acids
141
beta, elta, gamma, epsilo, andz eta have amino acids of ______
146
theta have __________ amino acids
unkown
2 zeta + 2 epsilon
gower 1
2 zeta + gamma
portland