Four levels of protein structure | Chemical processes | MCAT | Khan Academy

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The four levels of protein structure are primary, secondary, tertiary, and quaternary. It is helpful to understand the nature and function of each level of protein structure in order to fully understand how a protein works. By Tracy Kovach. Created by Tracy Kim Kovach.
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Опубликовано:

17 июл 2024

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Комментарии : 161

@jessicagayle9231 9 лет назад

wow no idea how many people's grades you save.

@kadekevin566 8 лет назад

really is an eye-sight testing video

@emeliramos1758 4 года назад

Kade Kevin 😂😂

@ananya947 3 года назад

😂😂😂

@jseanbrooks1 3 года назад

Get a bigger screen my guy

@pawelmkm 2 года назад

😂😂😂

@makeshiftmusic 8 лет назад

My AP bio teacher goes over things very quickly so sometimes it's a little hard to follow, so this cleaned a few thoughts up. Thanks a bunch!

@keylimetea 6 лет назад

Jack Merrill same lmao

@BiaRoselie 8 лет назад

This video is so helpful! I think the shorthand writing ( abbreviations), clear speech, and clean writing. its all very organized and easy to follow. You're saving my life, my BCH book does a terrible job of explaining.

@ZomeaterWWZ 7 лет назад

Thank you for the video, great educator!

@indianasummers7716 6 лет назад

Thanks for the video! Ain't nothing wrong with your voice.

@meganretana101 8 лет назад

the writing... is so... damn.... small.....

@kanupriya21 9 лет назад

This was hugely helpful. Thanks so much!

@Umahdibro 9 лет назад

Very good video, you explain everything clearly and we'll. Thank you.

@manisharyal4239 8 лет назад

Is that Bernadette? Howard was lookin for you!

@Whit3Monk3y 8 лет назад

Explained very well, Thanks a lot

@JessicaDavis89 5 лет назад

This is a great video. Thank you for educating people. And I agree with a few other people, vocal fry can be very distracting.

@nabie981 4 года назад

This is beyond awesomness! Thank you so much!

@NehaPatel-kg2fr 5 лет назад

clear and concise - very helpful!

@nyawirawaithaka4993 5 лет назад

Thank you! Very well explained.

@ahmadabdelhay9328 5 лет назад

Well explained ..Thanks You saved my day 😃

@EaglesFastAndLow 9 лет назад

Biochemistry is so much easier thanks to you!

@ayaboukaidilaghzaoui9919 4 года назад

6years later still very helpful thanks!

@algorilemar9195 5 лет назад

Thank you Khan academy and Tracy!

@arshsharma8627 5 месяцев назад

with all due respect, shes got symphonious voice, i would fall for her if i was in her class

@spaceykid 6 лет назад

Thank you :) this was helpful

@sshirish9167 6 лет назад

Your explanation is always amazing Tracy......Love your voice and your handwriting :-)

@peterwolanski5244 9 лет назад

Very well done. Thank you.

@dennismccool8760 6 лет назад

Excellent. Thank you.

@michaelb1785 4 года назад

Nice and clear thanks. A few more spelt out terms would be appreciated.

@alisonhenley1365 7 лет назад

Thank you :)

@LucasGeeting 8 лет назад

THANK YOU.

@jisu2274 5 лет назад

omg i swear the way u drew the alpha helix structure was so satisfyingggg

@sciencenerd7639 2 года назад

very nice, thanks!

@mohammadadnan6374 5 лет назад

thank you from heart

@oriswest234 5 лет назад

she has the nicest voice...love this video. thanks

@yolandahaywood5407 9 лет назад

Interesting!

@seanmallari8486 5 лет назад

Thanks

@mmaking8664 8 лет назад

Where is Khan?

@jcapper2 8 лет назад

Lmao same

@K87e87l87e87p87a87r 7 лет назад

showing some wrath to the star trek guys.

@Transition475 7 лет назад

getting head in the back room

@Bentami 5 лет назад

MMA king hes at the academy

@harshitakumari4808 5 лет назад

Helpful video thanks

@ayeshamariam9070 8 лет назад

the info n the ppt is awasum

@VinodYadav-et7nf 6 лет назад

Thank u

@saqibmahmood6353 7 лет назад

Guys how does change in in primary structure of a protein will have an effect on the tertiary structure and the final shape of the protein

@nels6991 7 лет назад

Great video

@KRVERMA-pt7jt 7 лет назад

Nice

@saudalomair1691 7 лет назад

thanks that was very helpful

@johnjeanlouis119 7 лет назад

Keep it up and nice graphics and lectures very useful information for learning how to stay on top of the subject matter.Thanks khan academy

@madhangopal1108 7 лет назад

yipee😃,survived listening to her voice till the end .

@DogeFrom2014 9 лет назад

Damn your voice is so beautiful! Makes this video way much better!

@mohanadgameking 8 лет назад

IKR !!

@alisonhenley1365 7 лет назад

Hahaha, i love her voice too !

@alia-xj5lv 6 лет назад

that is so true

@140spinnerforevr 6 лет назад

Are you mad blud!

@lararebwar4400 5 лет назад

Fr? I was so annoyed by her voice

@KrisKrisenKris 5 лет назад

You defined a protein as being made up of one or more "polypeptide" is this also true if it's made up of one or more ogliopeptide?

@osamamalik3290 5 лет назад

I like the way you say shtructure!!! 😉

@deboladosu8201 5 лет назад

had to speed it up a bit

@jad5802 3 года назад

What kind of teaching program or app did they use here? thank you!

@pris.v3973 7 лет назад

great video and SUPER helpful! ps don't listen to all these brats, your voice is on point ;-)

@ibrahimmalik6897 5 лет назад

These structures of protein or level mean each protein should have this levels or no ????

@satyamsrivastava5754 5 лет назад

Seductive!! Thank you:)

@crenapun57 3 года назад

@mustafaalhayali5506 7 лет назад

your voice makes the lecture understandable

@arkaneforyou 6 лет назад

Mustafa Alhayali her voice lacks shrukShur

@EliSpotts 3 месяца назад

WHISTLING S@@arkaneforyou

@aysalasaysalas8040 6 лет назад

lol she pronounces structure "shtrucshure"

@aestheticart4955 5 лет назад

Aylin Salas 😆😆😆😆😆😆😆

@inshaali2576 5 лет назад

Ahaha ikr I came to look for a comment like this xD

@apple404404 5 лет назад

dont laugh at her

@apple404404 5 лет назад

its distracting me

@Hala-bu2cl 5 лет назад

yes omg it was bothering me so much throughout the video. why does she say that?!!

@jameswindolf5939 6 лет назад

Very helpful. Haters need to just go read their books if they don't like it.

@Keerti1999 7 лет назад

thank you 4 d video. huge help. my brain fried up after going through ncert.

@nickolausafon5458 3 года назад

I really hope I don't got to see 140 videos just on biochemistry for my unit 3 exam (exam 1 was hard...) I blame Khan Academy for my failure of the last test: I used videos like this with over 4 hours watched as well as over 10 hours of textbook study just for preparation. I think I did around 20 hours of review over a few days just for ensuring I knew the material. Sadly, even 100 hours would not have saved me. SoS.

@desilithuanian7548 4 года назад

08:13 multimer or polymer?🧐🧐

@stephanieprieto8895 6 лет назад

you explanation is great, but why is your handwriting so minute?

@moniquegevorkian8897 8 лет назад

Thanks girl

@RIRI-ut4fg 5 лет назад

valley girl has taken over Khan Academy guys

@yashgaikwad3669 7 лет назад

HELP-(sorry for my bad english) hey , please help me, I m suffering from panic disorder, and yesterday I ran out of my tablets (lonazep), I was in panic, so I took the tablet which I keept in my drawer openly, just like I will not use it (i m going to throw it away but forgot), I was in so bad panic attack that it left me with no other option, so I took the tablet, is it ok to take a pill which where on shelf for more then a month.... I m afraid that bacteria, virus or anything like that will change the compound or any will bad microorganisms bypass my bbb.... or anything bad like this

@thesmiler119 4 года назад

You okay?

@thesmiler119 4 года назад

I think you just exaggerated! I mean, you thought of it too much. Don't!

@ultimatemayu8017 7 лет назад

I think you interchanged explanation of sec and tert structure,pls correct me if i am wrong

@hkkhawaja2829 4 года назад

SHTRUCTUREEEEE! Where's Khan atttt?

@suapaul8594 7 лет назад

There are three types of Secondary Structure - alpha helix, beta-sheet and collagen. Collagen- three strands of polypeptide coiled around one another.

@sunnis-4034 6 лет назад

Collagen is an example of a Fibrous Protein which is one of the two ways a protein can interact in Tertiary structure, the other being Globular proteins e.g. Hemoglobin.

@husseinal_salahi4291 7 лет назад

good

@akshatmishra3226 4 года назад

I need a magnifier

@elizabethsimons3409 10 лет назад

There are several mistakes in this video: 1) Pauling showed (and got a Nobel prize) that polypeptide chains fold because of the chirality of alpha amino acids lined via alpha peptide bonds, and that the H-bonds between peptides line up every 3.4 aa and are strengthened because H2O is absent (i.e. because the dielectric constant in the denominator of the bond strength is a lot lower than 80). 2) The H-bonds between parallel beta pleated sheets are not parallel but at an angle, making them weaker than those between anti-parallel pleated sheets, which may be why the latter are more prevalent in nature, 3) S-S bonds form spontaneously in tertiary structures because the cysteines' SH groups are near enough to each other and, again, H2O is absent. Anfinsen got a Nobel prize for that. Please correct these errors.

@MrDallas800 9 лет назад

lol

@mendoza725 9 лет назад

annnnndddd go fuck yourself.

@metaori 9 лет назад

in fact it`s 3.6 according to Pauling, just saying.

@priyankaperera7686 3 года назад

👏👏👏👏

@drevon2316 3 года назад

Tershare shratsher :)

@miranda_444 5 лет назад

Why is the writing so small???? No one can see it

@ayeshamariam9070 8 лет назад

u ve a wndrfull voice bt itz nt coming well the vedio plz look ovr it

@sfashaikh1187 5 лет назад

watch it on x1.5 speed

@arfagih4018 8 лет назад

The way she says structure is weird

@arkaneforyou 6 лет назад

ar fagih shrukhshur

@hashendriwanigasooriya 5 лет назад

Dude i cant see a thing

@MA-hb1jo 9 лет назад

Thank you, i really appreciate what you're doing but you make a very weird annoying sound at the end of each sentence!!

@MA-hb1jo 9 лет назад

1:40

@narutoibleach 9 лет назад

Meshari AA its her breath... im sure you can survive it

@samgirl964 5 лет назад

The writing is way to small:(

@inshaali2576 5 лет назад

Your explanation is amazing but the way you pronounce structure is distracting xD

@nezeremokonkwo370 9 лет назад

it would be really be nice if your writing is made bigger..really hard to follow the writing..

@lnfernalGamingYT 4 года назад

I don't know why the background just makes me wanna sleep.

@lordnicholasbuzanthefearle2155 10 лет назад

Tracy you have a hot voice

@dipeshyadav1809 10 лет назад

idiot

@Wardog11111 9 лет назад

Dipesh yadav Why?

@dipeshyadav1809 9 лет назад

@Wardog11111 ..the video is for educational purpose.....whenever someone look after comments for these ...they aspect something useful........not "she has this or that"......

@Wardog11111 9 лет назад

Dipesh yadav Yeah I know it's for educational purposes, but the comment doesn't detract from the video. Also most people commenting on the video aren't experts on the subject like Tracy, you can't really expect reliable information in comments. Her videos are awesome, and I appreciate her work, but that doesn't mean I can't also think she has a hot voice.

@MrDallas800 9 лет назад

LOL. Thats what i was thinking. And then i looked her up on google and she looked exactly like i thought she was gona look. Mixed asian with .. maybe white? Probably white. lol