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we can't tell the charge of lysine at 4.5 because the PKa is not given. we can only know what charge it carries with the PKa value on carboxyl group or amine group.And to know the charge remember when PH is less than PKa it is always 0 while when PH is higher than PKa it is always -1 on carboxyl group. For the amine group it is always +1 as the PKa is always higher than the PH. so for example we have PKa1 2.19 PKa 5.2 for caboxyl group and 9.67 For amino group. to deter mine the charge is on pka1 the charge -1 because PH4.5 is higher than the pka,while on pka 2 the charge is 0 as PH 4.5 is lower than PKa.while for amine group it is + 1 because PKa is higher than PH4.5 so there the charge on lysine will be calculated -1+0+1=0. that's how i understand it
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What is the isoelectric point of tyrosine and how does it affect its chemical properties?
The isoelectric point of tyrosine is around pH 5.66. At this pH, tyrosine carries no net electrical charge. This affects its chemical properties by making it less soluble in water and more likely to interact with other molecules through hydrogen bonding.
What is the charge of lysine in a neutral pH environment?
In a neutral pH environment, the charge of lysine is positive.
What is the charge on the lysine molecule when it is in a solution with a pH of 7?
The charge on the lysine molecule is positive when it is in a solution with a pH of 7.
How can one determine the isoelectric point of a molecule?
The isoelectric point of a molecule can be determined by finding the pH at which the molecule carries no net electrical charge. This can be done by plotting the molecule's charge as a function of pH and identifying the pH at which the charge is zero.
What is the isoelectric point of tyrosine?
The isoelectric point of tyrosine is approximately 5.66.
What is the isoelectric point of tyrosine and how does it affect its chemical properties?
The isoelectric point of tyrosine is around pH 5.66. At this pH, tyrosine carries no net electrical charge. This affects its chemical properties by making it less soluble in water and more likely to interact with other molecules through hydrogen bonding.
What is the net charge of ATP at pH 7?
At pH 7, ATP has a net charge of -4.
What charge to hydrophobic amino acids have at pH6?
Most hydrophobic amino acids like alanine, valine, leucine, isoleucine, phenylalanine, tyrosine, and tryptophan do not have charged side chains at neutral pH (pH 6). Their side chains are usually non-polar, so they do not contribute to any charge on the amino acid at pH 6.
What charge does pH 4 have?
Plus charge, ie, it has H3O^+ ions (hydronium ions)
What is the charge of phosphate?
Depends on the pH. At cell pH, phosphate has 3 negative charges. In acidic conditions, it can have zero. At a very high pH, it can have 4.
What is the relationship between pH and pI in terms of their impact on protein charge?
The relationship between pH and pI is that the pH of a solution can affect the charge of a protein, while the pI (isoelectric point) is the pH at which a protein has no net charge. At a pH below the pI, the protein will have a net positive charge, and at a pH above the pI, the protein will have a net negative charge.
What is the charge of lysine in a neutral pH environment?
In a neutral pH environment, the charge of lysine is positive.
The pI of a lysozyme is 11. What is the pH range in which the overall charge of the lysozyme is positive?
At pH values less than the pI point the net charge is positive. If at pH above the pI poiint, the charge will be negative.
What is the charge on the lysine molecule when it is in a solution with a pH of 7?
The charge on the lysine molecule is positive when it is in a solution with a pH of 7.
What is the charge on the perchlorate anion?
The pH depends on the concentration (how much is dissolved in a given volume of water) Since it is a strong monoprotic acid the pH equals the negative logarithm of its molar concentration. A 1M solution has a pH of 0 a .1M solution has a pH of 1 and so on until a pH of about 7.
Is Tyrosine and L Tyrosine the same thing?
Yes.
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
