0
The net charge is 0. First, lets look at the two amino acids separately. For Lys, you have:
pka1=2.2 (coo-)
pka2=9.1(NH2+)
pka3=10.5 (lateral chain)
For glu, you have:
pka1=2.1(COO-)
pka2=4.1 (lateral chain)
pka3=9.5(NH2+)
First, below 2.1:
100% of : NH2+---------CH----CO-NH---CH-----COOH (CHARGE=2+)
COOH NH+
At 2.1:
50% of :NH2+---------CH----CO-NH---CH-----COOH
COOH NH+
50% of :NH2+---------CH----CO-NH---CH-----COOH (here, we see that there was no
COOH NH+ change, WHY: the carboxyl of glu should be ionized at 2.1, but it is attached to the amino group of lys, so there is no change
At 2.2
...of NH2+---------CH----CO-NH---CH-----COO- (charge+1)
COOH NH+
At 4.1
....of NH2+---------CH----CO-NH---CH-----COO- (CHARGE=0)
COO- NH+
At pI = 6.8
100 % of NH2+---------CH----CO-NH---CH-----COO- (CHARGE=0)
COO- NH+
Since the next pka is at 9.1, we don't have any change yet at the physical pH 7.4. Thus, the charge is zero. I didn't put the pI in between b4, it would just take too much time, but I hope that you do understand the concept now.
Good luck
What else can I help you with?
Does h2 have a net charge?
No, h2 does not have a net charge. It is a neutral molecule.
What is the net charge of silver?
The net charge of a silver ion (Ag+) is +1 because it has lost one electron.
What is the charge of an unbonded atom?
An unbonded atom has a neutral charge, meaning it has an equal number of protons and electrons. The positive charge of the protons is balanced by the negative charge of the electrons, resulting in a net charge of zero.
If five electrons combine with 3 protons the net charge will be?
The net charge will be negative, since electrons have a negative charge and protons have a positive charge. When 5 electrons (-5) combine with 3 protons (+3), the net charge will be -2.
What is the net charge of potassium?
Usually if potassium has a charge, it is +1.
What is the net charge of the dipeptide glu-lys at physiological pH?
The net charge of a dipeptide, such as glu-lys (glutamate-lysine) at physiological pH, which is around 7.4, would depend on the pKa values of the constituent amino acids. Glutamate has a side chain pKa of around 4.3 and lysine has a side chain pKa of around 10.8. At pH 7.4, glutamate's side chain is mostly deprotonated with a −1 charge, while lysine's side chain is mostly protonated with a +1 charge, resulting in a net charge of 0 for the dipeptide glu-lys.
What is the net charge of phosphatidylserine in physiological pH?
In physiological pH (around 7.4), phosphatidylserine typically carries a net negative charge due to the presence of its phosphate group. The head group of phosphatidylserine contains a negatively charged phosphate, which contributes to this overall charge. As a result, phosphatidylserine is often classified as an anionic phospholipid in biological membranes.
Net charge of histidine in pH 1 3 5 11?
pK1 = 2.3, pKr = 6, pK2 = 9.7 (all approximate) at physiological pH, histidine has no net charge. at pH 1, below all pKas and charge is +2 at pH 3, amine group proton pops off, so +1 charge at pH 5, still below 6 and above 2.3 so +1 charge if had pH above 6, for instance... at pH of 8 net charge is zero, or neutral... such that it is neutral at physiological pH (a bit above a pH of 7) at pH 11, exceeds all pKas of amine, acid group, and R group. So net charge of -1 amine deprotonation, carboxylic acid deprotonation, and R group deprotonation happen pH 11 because it exceeds all pKs
How do you find net charge?
The net charge is the total amount of charge that the ion will have. So you will find out the charge of each group and add them all together for the net charge.
What is the net charge of DNA?
The net charge of DNA is negative.
Is one property of an electron a net charge of 0?
No an electron does not have a net charge of 0, in fact it has a net charge of -1.
What is net charge of collagen?
The net charge of collagen varies depending on its specific type and the pH of the surrounding environment. Collagen contains various amino acids, some of which are charged, such as lysine and arginine (positively charged) and aspartic and glutamic acids (negatively charged). At physiological pH (around 7.4), collagen generally has a net neutral to slightly negative charge due to the predominance of negatively charged amino acids. However, the exact charge can fluctuate with changes in pH and ionic conditions.
The majority of matter has a net charge of what?
The MAJORITY of matter has a net charge of ZERO.
What is the net charge ions in Sodium?
A crystal of salt consists of electrons and positive ions. How does the net charge of the electrons compare with the net charge of the ions
What net charge does a sodium atom have?
A sodium atom has a net charge of zero. A sodium ion has a net charge of 1+.
Why it is called current a net charge?
Current is the flow of electric charge, not the total charge itself. It is called a net charge because in a circuit the movement of charge is a result of the difference in charges between different points, creating a flow of net charge.
Does h2 have a net charge?
No, h2 does not have a net charge. It is a neutral molecule.
