The textbook says that the 3 polypeptide chains of collagen molecule are held by hydrogen bonds AND some covalent bonds. Do we need to remember that it's also held by covalent bonds or hydrogen bonds is enough? Asking cuz you haven't mentioned covalent bonds, you've only mentioned hydrogen bonds. And how is collagen a quaternary structure when it has 3 polypeptide chains and not 4? Thanks!
Pretty sure i talked about both H bonds and covalent cross-linkages (aka bonds) for collagen! Perhaps you may wanna watch again.... Quarternary structure is defined as two or more polypeptides. So any protein with more than 1 polypeptide will be considered quarternary
Covalent bonds, aka disulphide bonds are formed btwn cysteine amino acids! Eventho it's not in the common trio of amino acids, they do occasionally occur
hello can you please tell me what are the structures i need to learn to draw from this chapter, since i am not that good in chemistry i can only identify most
Specific structure: Alpha glucose, beta glucose General structure: amino acid, glycerol, fatty acids Structure after condensation / hydrolysis (you need to know how to join/break up the monomers) : disaccharide, dipeptide, triglycerides... All polymers too. The trick here is to figure out how the functional groups look like before/after hydrolysis. You need to be able to recognise all of the ones mentioned on this video.
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you teach so well,may god bless you for your efforts:)
Your videos are very very helpful, thank you so much for this! :)
Thank you so much!!. I couldnt understand the difference between the tertiary and quaternary structure
Quaternary just means more than 1 polypeptide chain is involved! Hope it's clearer now
Thank you mam
Your hard work for making this video is paying of 😁
The textbook says that the 3 polypeptide chains of collagen molecule are held by hydrogen bonds AND some covalent bonds. Do we need to remember that it's also held by covalent bonds or hydrogen bonds is enough? Asking cuz you haven't mentioned covalent bonds, you've only mentioned hydrogen bonds. And how is collagen a quaternary structure when it has 3 polypeptide chains and not 4? Thanks!
Pretty sure i talked about both H bonds and covalent cross-linkages (aka bonds) for collagen! Perhaps you may wanna watch again....
Quarternary structure is defined as two or more polypeptides. So any protein with more than 1 polypeptide will be considered quarternary
would you need to explain why biuret turns purple ?
Yep
maam i have a question
is it collagen molecules forming covalent cross links b/w R groups of GLYCINE or LYSINE?kindly can you please clarify?
Covalent bonds, aka disulphide bonds are formed btwn cysteine amino acids! Eventho it's not in the common trio of amino acids, they do occasionally occur
hello can you please tell me what are the structures i need to learn to draw from this chapter, since i am not that good in chemistry i can only identify most
Specific structure: Alpha glucose, beta glucose
General structure: amino acid, glycerol, fatty acids
Structure after condensation / hydrolysis (you need to know how to join/break up the monomers) : disaccharide, dipeptide, triglycerides... All polymers too. The trick here is to figure out how the functional groups look like before/after hydrolysis.
You need to be able to recognise all of the ones mentioned on this video.
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PLEASE ENABLE DOWNLOADS OF VIDEOS PLEEEEEEEEEEEEEEEEEEEASEEEEEEEEEEEEE. T^T 😭😭😭😭
I did. But i think the downloadable option is only available for TH-cam Premium members?
@@behlogy Oh OK thank you.
collagen part ,didn't understand
Which part? Sometimes pausing the video and reading through the notes may help.
collagen part ,didn't understand