Nonpolar and Uncharged Polar Amino Acids

[@LuisaElea]

Your videos are the perfect example for "everything is easier to memorize once you understand it". I would have fallen into despair without you!

[@backstreetfan2887]

I have noticed that some books put tyrosine with the polar amino acids and some books put tyrosine with the nonpolar amino acids. What my molecular biology professor said was that since the aromatic ring is so big and bulky, tyrosine is hydrophobic despite having that hydroxyl (so what he says in the video is correct, I'm just trying to help anyone who may still have doubts)

[@oblomov4580]

Thank you! I got really confused cause i couldnt figure out how that is nonpolar considering it has OH group

[@shivanibalodi9082]

It will be hydrophobic non polar only in that case, unless there are any exceptions I guess (that I am unaware of !)

[@adnanshah7634]

This guy explains it so much better than most professor!! Thanks!

[@حسينحمزة-ج1ق]

I was'nt attending lectures for the whole semester...and now I'm able to understand everything..thanks alot (and the word "thanks" is'nt enough) :)

[@emilykrieger6272]

I skip my lectures because I get 10x more out of these videos.. keep up the awesome work, my grades thank you.

[@atawahperry3639]

you have thge best quality of lectures . infact you were brought into this world to teach. you are a perfect teacher

[@tammybush3162]

Thank you again for another fantastic lecture! I am no longer afraid of AAs!

[@AKLECTURES]

+Tammy Bush Yes! You're welcome Tammy!

[@jarksonpilaf7068]

You have the best teaching style ever!!!!!!!!

[@chitranshita_jain]

I'm pursuing bsc biotechnology and hopefully I found this amazing biochemistry lectures. Thank you very much..❤ this lectures will help me a lot ..

[@theamazingguy150]

Absolute dedication, because he drew the bonds instead of using a skeletal formula for the R group

[@wafaminhas6961]

One of the best explanations I've heard thus far

[@Zyy225]

You are truly a brilliant teacher Sir. Thank you for providing us with your awesome explanations 🙏😊

[@stbasil2135]

Excellent lectures. Clear, concise, and informative.

[@CAgal1981]

Great lecture! On Valine, did you add an extra H atom to the first methyl group? I think it is CH not CH2, since C has four bonds. also Leucine

[@furn1090]

There is a mistake in Valine, the first carbon atom of the side chain in ch, not Ch2

[@captainamericawhyso5917]

Sir in 2:04 did you mean to say that valine is more hydrophobic that alanine instead of saying ''more electronegative'' ?

[@taioduke2907]

your so good. thank you so much ur famous on our grad school campus!

[@AKLECTURES]

+Taio Duke Thats awesome :) Where do you go to school?

[@taioduke2907]

National University of Health Sciences. Lombard IL pursing doctorate in Naturopathic Medicine

[@pachinkokujo852]

Thanks for an amazing lecture! But I have a question, you've classified Tyrosine as non-polar although in Lippincott it is categorized as polar. I do understand how you've explained it but still i'd be grateful if you looked into it. Thanks again!

[@TorySlusher]

Inexorable, very slow infinitesimal... As a guest, visitor etc

[@حسينحمزة-ج1ق]

you are a miraculous doctor!!

[@sepidehtavakoli1097]

This was the best lecture ever:)

[@ahmadmohammad5890]

Great lecture ..thank you so much ..but l have one question please ..you say serine is polar and reactive in forming a disulfide bridge ..i think it is cystein not syrine ,isn't it?? I hope to respond to my comment...

[@motivational_Insights]

For the valine structure in this video, I see that the CH2 carbon attached to the chiral carbon has 5 bonds. I think it should be CH and not CH2. Thank you for all you do.

[@abdulrafay1509]

Man you saved me from failing my Biochemistry course :)

[@muntahanoormuskan6431]

This was a really good lecture

[@eylemb1562]

You're really saving me thank you so much :)

[@OurRandomLifeFTW]

I have a textbook that lists Tyrosine as neutral polar, I'm guessing that has soming with the o-h group.

[@AKLECTURES]

OurRandomLifeFTW Eh, thats not exactly wrong. But usually the single hydroxyl group is not enough to offset the large and bulky hydrophobic ring of tyrosine. Besides, that hydrogen ion is only lost at a very basic pH, making it not a very good acid at all.

[@OurRandomLifeFTW]

AK LECTURES thanks for the quick response and awesome lectures so far!

[@AKLECTURES]

OurRandomLifeFTW thank you! :-)

[@rebeccadee2910]

I may have misunderstood, but Im sure all amino acids, apart from glycine are chiral

[@krupalipatel1650]

My lecturer told us that Tyrosine is hydrophilic, polar and uncharged...?

[@hemavathithirumalai2855]

same duobt ..here even..??

[@strwrs3m64]

Krupali Patel it depends. It’s only slightly hydrophilic

[@TALKmd]

Great I appreciate your explanations

[@عُلاعلي-ز5ح]

thank you very much the luctuer was incredible

[@TungaTube12]

Thank you so much for your great lectures! Just one small thing, would you check again a formula for valine and leucine?

[@rassimsimou1594]

Good

[@joel_pablos]

Its not Serine the aminoacids that forms sulfide bridges but Cysteine instead:)

[@ftYamell]

Thank you good sir!

[@WaqarAhmad-hi5vj]

valine structure is wrong. that CH3 is not possible to be connected to 2 other CH3.

[@michaeljohnson8353]

You state that Tyrosine is non-polar but that is incorrect.

[@gracedixon2384]

Hi! I was just wondering what was meant by some amino acids being more electronegative than others, as I thought this was a property of atoms, not molecules? Thanks! :-)

[@bossstee8684]

Which polar uncharged amino acids are most commonly involved in enzymatic reactions?

[@sakshisood7108]

Thank you.

[@monicalagunas2544]

Thank You!

[@droptamang9184]

My notes show methionine is a polar,uncharged group..Is my notes wrong??

[@manelyoona]

why is the tyrosine with the hydrophobic group !?

[@bitasadeghi7995]

god bless you

[@1lostyouth]

My textbook mentions proline as a non-polar as well, is there a reason for this?

[@funny1cute2]

Amazing

[@zurikemarais4407]

does anyone have an idea if you can get pdf notes on what he explains?

[@Msbenjamina]

I still don't get why Tyrosine is non polar even though it has an OH

[@medoviski3754]

Check @backstreet fan comment

[@sandra25]

wish you could tech me at the uni

[@okechiokeomasr.9324]

Do you think it's just a coincidence that there are 10 polar and 10 nonpolar amino acids?

[@hak8755]

biochem king !!!

[@AKLECTURES]

h ak thanks once again!

[@SaraGreen-xr3tl]

Not all heroes wear capes

[@vipulshirsat3644]

💛💛💛

[@codupgaming1947]

3:07 lol

[@itharmosawi5154]

Tyrosine is polar not nonpolar🙄🙄

[@berilkocak859]

3.07 helal helal

[@NatarajanGanesan]

I am sure you must be a teacher

[@terri-lynearle2078]

Drglidden

[@razansharaf9381]

Thank you!