Enzyme cofactors and coenzymes | Biology | Khan Academy

แชร์
ฝัง
  • เผยแพร่เมื่อ 7 พ.ย. 2024

ความคิดเห็น • 46

  • @himalayo
    @himalayo ปีที่แล้ว +8

    honestly, the more I look into biochemistry the more I feel happy to be alive. It's such an honor to be the intricate machines we are, and even more to be capable of understanding or inner workings. :)

  • @DillonChan
    @DillonChan 8 ปีที่แล้ว +21

    Excellent video
    Throughout highshcool and during my intro to cell bio course, cofactors were always relegated to being "things that help enzymes". It's nice to be able to see some chemical basis for the reasoning behind this! Thanks sal.

  • @anjelicaluna6143
    @anjelicaluna6143 5 ปีที่แล้ว +17

    Sometimes breaking down and slowing down to teach something helps out a lot. I was confused the whole time because our PowerPoints were so simple and didn't go into so much detail. next video

    • @emilie6466
      @emilie6466 5 ปีที่แล้ว

      Anjelica luna simple? Why are you watching a TH-cam video then? Go to a college lecture for molecular biology if you want complicated biochemistry or how about you read a research paper on enzyme dynamics and mechanisms. This video is plenty complicated for the lay person, why do you feel the need to be rude?

    • @anjelicaluna6143
      @anjelicaluna6143 5 ปีที่แล้ว

      GGyourdead yes my modules were simple. Do you have a problem lol? And I did do all of that. You wouldn’t know because it’s not like I post my everyday life on here. Thanks for your feedback 👋🏼

    • @anjelicaluna6143
      @anjelicaluna6143 5 ปีที่แล้ว +2

      GGyourdead also I didn’t know my comment was rude lol just stated I was confused the whole time

  • @john-dq5cj
    @john-dq5cj 3 ปีที่แล้ว +8

    Hello!
    I just saw this video and I have been puzzled by co-enzymes for quite some time. ( I am 82 yrs. old)
    When I look at all discussions of the Kreb's cycle I always get the impression that the co-enzyme NAD is functioning independently without the benefit of an apo-enzyme. Is that so????. Or is the fact that the NAD is just a part of the holoenzyme and that the entire holoenzyme is there at work: is that just understood by everyone else, but me.
    I would surely appreciate anyone's response to this question.
    Sincerely,
    John Mulflur, M.D.

    • @wuttho
      @wuttho 7 หลายเดือนก่อน

      I hope you are well!

  • @godslove7301
    @godslove7301 9 ปีที่แล้ว +8

    so helpful. I was stuck and confused, I didn't know the rile of cofactors and what they actually real are. thanks for the clear explanation.

  • @Geoffsmeg
    @Geoffsmeg 9 หลายเดือนก่อน

    Brilliant video thank you! 🧬🧬

  • @gnebehiruth991
    @gnebehiruth991 8 ปีที่แล้ว +6

    faites les vidéos en francais aussi svp

  • @pslasharipslashari4530
    @pslasharipslashari4530 2 ปีที่แล้ว

    I learn more things from ur videos

  • @Otieno12
    @Otieno12 3 ปีที่แล้ว +1

    I wanted to know example of enzyme-cofactor pairs. Eg biotin is the cofactor of pyruvate carboxylase; NAD+ for pyruvate carboxylase

  • @oliviacooney5974
    @oliviacooney5974 7 ปีที่แล้ว +8

    In my textbook it says that coenzymes are organic cofactors derived from water-soluable vitamins. They accept electrons from an enzyme in one metabolic pathway and transfer them to an enzyme in another.

  • @jessicalv6442
    @jessicalv6442 ปีที่แล้ว

    I love this example!

  • @pslasharipslashari4530
    @pslasharipslashari4530 2 ปีที่แล้ว

    Thankful for you

  • @harryfire411
    @harryfire411 3 ปีที่แล้ว +1

    7:00 text and line drawings difficult to see with smartphone please increase the contrast

  • @garymcleod6772
    @garymcleod6772 5 ปีที่แล้ว +1

    Excellent, as always.

  • @nargisnasir104
    @nargisnasir104 6 ปีที่แล้ว

    I dn't understand so much confuse .. but ur teaching style is good

  • @daniatizah6674
    @daniatizah6674 8 ปีที่แล้ว +1

    so helpful...

  • @jessicalv6442
    @jessicalv6442 ปีที่แล้ว +1

    I want to know why Khan knows everything😭

  • @ayesharehmat7119
    @ayesharehmat7119 4 ปีที่แล้ว

    really helpful

  • @Mel-gp2pz
    @Mel-gp2pz 2 ปีที่แล้ว

    Distracting electrons so electrons can proceed? 🤔 I’m confused

  • @sadiaurmila3745
    @sadiaurmila3745 ปีที่แล้ว

    If the background is white,it'll be very helpful to me.

  • @junosmodel3LRchannel
    @junosmodel3LRchannel 7 ปีที่แล้ว +9

    6 people who disliked the video is probably professors lol this khan guy is so good 👍

  • @christieemerson5564
    @christieemerson5564 7 ปีที่แล้ว +3

    Why is biology so wierd? THANKS SAL!

  • @pslasharipslashari4530
    @pslasharipslashari4530 2 ปีที่แล้ว

    Nice

  • @Sambedana221
    @Sambedana221 4 ปีที่แล้ว

    Can anybody tell the exact binding site of cofactor.. Is it the same active site where cofactor binds?? Or different

  • @1Sun111
    @1Sun111 5 ปีที่แล้ว

    if you know it, which enzymes need copper as a coenzyme?

    • @1Sun111
      @1Sun111 5 ปีที่แล้ว

      question wrong, copper is not organic, so we talk about a cofactor :) understood

  • @rogerscottcathey
    @rogerscottcathey 4 ปีที่แล้ว

    All the B vitamins and only the B vitamins are coenzymes. Other vitamins are cofactors. Vitamin C is a cofactor, not a coenzyme.

    • @rogerscottcathey
      @rogerscottcathey 4 ปีที่แล้ว

      Coenzymes are characterized as labile. For example, HCN is highly labile lending it's proton or hydrogen ion easily. It actually deserves the status as a B vitamin. Papain, the enzyme of papaya carica is activated by HCN.

  • @swapanbiswas9654
    @swapanbiswas9654 9 ปีที่แล้ว +2

    I have a khan academey account

  • @saniahashmi8840
    @saniahashmi8840 5 ปีที่แล้ว

    I didn't understand the magnesium part can anyone explain?

    • @khadejaalom1954
      @khadejaalom1954 3 ปีที่แล้ว

      Mg ion attach with O anion
      As a result the 2 hands of P become empty . So P is able to react with glucose

  • @olivialempard2149
    @olivialempard2149 4 ปีที่แล้ว

    can anyone tell me if cofactors are permanent or temporary???

    • @emilie6466
      @emilie6466 4 ปีที่แล้ว +1

      They are temporary they fall of over time or are removed by another enzyme to stop them from carrying out their functions.

  • @hemaagrawal1132
    @hemaagrawal1132 6 ปีที่แล้ว +1

    I got confused

  • @acapulco_potato6158
    @acapulco_potato6158 9 ปีที่แล้ว +11

    I'm so done, what the fuck is this. All I see is squiggly lines with random letters and numbers

    • @sccm100
      @sccm100 8 ปีที่แล้ว +15

      Don't pick a science major

    • @greenzebra97
      @greenzebra97 7 ปีที่แล้ว

      lmao

  • @ozumeceozcan6231
    @ozumeceozcan6231 3 ปีที่แล้ว

    his voice so hot tho

  • @pathbasics
    @pathbasics 4 ปีที่แล้ว

    Hmm, not the best KA video... I could've done a better job of explaining this - I only came here for one answer and ended up googling it. Just sayin.