How to calculate the charge of a peptide chain

[@blahblah-sg4yj]

this 3 minute video made me understand something my professor tried to teach us for 3 weeks. I'm in second year uni paying $15k/year.....

[@raubieraiford7297]

I loved the visual you gave when comparing each ionizable groups' pKa to the pH. I've never seen it taught this way before, but it is truly helpful. Thank you!

[@BiochemistryNK]

You are most welcome

[@vaisakhyesodharan]

It really helped me. The explanation was precise and understandable. Thank you

[@BiochemistryNK]

Thank you for your comment, I'm glad it helped

[@axisgraf]

Thank you, Dr. Karaki--this was exactly what I needed help with

[@patiencebear2435]

Your explanation was awesome, your visual was perfect. Thank you!

[@naxussh3285]

thanks, literally saved my ass from waking way too early to study

[@bornalishaghosh7426]

This video is really very much helpful and the way by which you explain it's really amazing..thank you...

[@mdbadsha418]

wow, great explanation! It really helped me. I like your presentation style. Thank you so much!

[@peaceevbuomwan7815]

This was so well explained, I understood in an instance! Thank you so much.

[@hussienshartouni4189]

I am really thankfull for your efforts
Regards hussein chartouni

[@BiochemistryNK]

you are most welcome !

[@chung-chuyenyenbainguyenva8402]

thank you so much, this lesson really helped me a lot

[@amirahusseini1938]

I feel this is a lebanese doctor ... thank you for thiss ❤❤

[@Nothin101]

This really helped!!! Thank you so much!!!!

[@BiochemistryNK]

I am glad it helped

[@VerniceGlenn]

thank you for this.

[@eazyhacks10111]

but the link doesn't link us to the quiz, you know I was even holding pen in my hand ready for quiz but..🤦😂

[@BiochemistryNK]

The link is no longer available since it is no longer free.

[@grandmastalin7796]

I still don't get why tyrosine isn't charged

[@BiochemistryNK]

Because on the given pH, the hydroxyl of tyrosine exist in the protonated form as OH (pH OH predominates, if PH >pka =>O- predominates). OH doesn't carry a charge. Now for the terminal Amino group it's positively charged NH3+ predominates under the given pH.

[@strugglingcollegestudent]

@@BiochemistryNK doesn't OH have a negative charge because hydroxyl ion is OH-?

[@adoramaedonatoringor1381]

why is the pka of alpha amino group 8? Shouldn't it be 9.11 because it is tyrosine
?

[@Yosif_Movement]

awesome, thx alot

[@nzemenkwelle9342]

Very helpful to me. Thanks much.

[@BiochemistryNK]

I am glad to know that. You are welcome

[@arifmalik9775]

Explained nicely

[@BiochemistryNK]

Thank you, glad you find it helpful

[@rebeccavarghese1956]

You’re amazing, thanks so much

[@BiochemistryNK]

thank you dear, I am glad you find it helpful :)

[@gouharmaquboolnitp]

Mam quiz link is not working 😢

[@CoCo-px3bn]

Thanks so much for this vid!!

[@BiochemistryNK]

You are welcome :)

[@nawelgartet4058]

omgg thank u so much

[@emmad5514]

thank you!!!

[@kalyana7167]

Thank you!

[@BiochemistryNK]

Most welcome

[@naghamfakih316]

this helped alot . thanks

[@BiochemistryNK]

Most welcome

[@jacobocarvajalcardona2527]

thank you

[@MrBepis-qx5ye]

Hello my friend

[@eazyhacks10111]

o masepa straight

[@digsdub9974]

Very helpful

[@BiochemistryNK]

Glad to hear that

[@alexkxo8221]

Perfect 👌🏿

[@BiochemistryNK]

Thank you

[@Dentacore_Academy]

So nice thnks

[@BiochemistryNK]

You are so welcome

[@rugvedkalaskarvnitnagpur2286]

this came in jee adv 2020

[@BiochemistryNK]

it did? cool, I hope you saw the video before the entrance exam and that you did well :D

[@Keemp]

thank you