Co-factors, co-enzymes, and vitamins | MCAT | Khan Academy

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  • Опубликовано: 21 окт 2024

Комментарии • 64

  • @user-fv1qi2xt2p
    @user-fv1qi2xt2p 10 лет назад +77

    Hi Kimberly, you are right. A coenzyme is a cofactor. A loosely bound cofactor is a coenzyme and a tightly bound cofactor is a prosthetic group. Cofactors are non-protein "helper" molecules that can be classified as organic or non organic ( sometimes restricted to inorganic substances only). Organic molecules are either vitamins or made from vitamins like the vitamins B1, B2, B3, B5, B6 and Biotin. Inorganic cofactors are usually metal ions like Mg2+
    Extra terminology:
    Holoenzyme - enzyme + cofactor (the whole complex)
    apoenzyme - enzyme that is missing its cofactor
    Hope this helps!

  • @ArwilRamentoAlfonso
    @ArwilRamentoAlfonso 3 года назад +14

    I would like to point out that coenzyme is also a cofactor.

  • @katgines2986
    @katgines2986 3 года назад +3

    great video, does anyone else think he sounds like Schmit from New Girl

  • @edithgarciajimenez7325
    @edithgarciajimenez7325 3 года назад +1

    What an easy way to understand. Great job!

  • @ipadguy-MBBS
    @ipadguy-MBBS 2 месяца назад +1

    I come here to clear my coenzymes topic, but I am going with clearing 3-4 more topics in it.

  • @aquaspark4242
    @aquaspark4242 10 лет назад +5

    Thank you so much. I was so confused before this

  • @boblolrus
    @boblolrus 2 месяца назад +1

    Thanks!

  • @shimaashehata4233
    @shimaashehata4233 7 лет назад +2

    awesome, you helped me

  • @salsabil.a1240
    @salsabil.a1240 7 лет назад +1

    thank you so much

  • @hasmiranik1064
    @hasmiranik1064 3 года назад

    Thank you
    😊

  • @yeberutwakebet428
    @yeberutwakebet428 3 года назад

    U are great u deserve more views

  • @waisx4002
    @waisx4002 10 лет назад +3

    Thank you very much, I'm glad to have learned this =)

  • @baeyuh
    @baeyuh 10 месяцев назад

    thank you

  • @franzjelhernandez325
    @franzjelhernandez325 Год назад

    Shesh u goood! Thanks!❤

  • @sciencenerd7639
    @sciencenerd7639 2 года назад

    super helpful

  • @neerodhaedirisinghe4970
    @neerodhaedirisinghe4970 9 лет назад +5

    Aren't co-enzymes a type of co-factor? In this video it implies co-factors and co-enzymes are two different things. Shouldn't the correct classification of co-factors be co-enzymes and metal ions and co-enzymes are then further divided in to co-substrates and prosthetic groups?

    • @yaraaddag1530
      @yaraaddag1530 8 лет назад

      +Neerodha Edirisinghe Hello ! can you give me your facebook please :)

    • @lucus1345
      @lucus1345 8 лет назад

      +YARA ADDAG fucking freak

    • @meghabhatti6819
      @meghabhatti6819 8 лет назад

      I guess coenzyme are actually having attached organic molecule to it but cofactor is free as given example Mg

    • @ayushisingh9222
      @ayushisingh9222 6 лет назад

      Neerodha Edirisinghe ya

  • @emoney865
    @emoney865 9 лет назад +1

    Great Video

  • @ahmadnikidoskaufmann
    @ahmadnikidoskaufmann 6 лет назад

    Tks for the great video and explanations

  • @yudalachiz3223
    @yudalachiz3223 9 лет назад +1

    Great!

  • @elmiraivazov2631
    @elmiraivazov2631 5 лет назад +1

    Great

  • @zannatul23
    @zannatul23 8 лет назад +2

    what are the role of coenzymes in respiration?

    • @honeyzbest564
      @honeyzbest564 5 лет назад

      ruclips.net/video/x4amk8bABUA/видео.html

  • @NwoDispatcher
    @NwoDispatcher 10 лет назад +2

    got any info on how trace minerals build enzymes? like a caesium, thorium, vanadium, gallium, tin, copper, etc?

  • @vidyayadav4624
    @vidyayadav4624 4 года назад

    Thanks sir

  • @Somethingsm2u
    @Somethingsm2u 4 года назад

    Thankyou

  • @nickt2575
    @nickt2575 10 лет назад +1

    Perfect.

  • @muhammedalghazi6184
    @muhammedalghazi6184 3 года назад

    Thank you so much. It was an amazing video on the topic ..

  • @kmri2728
    @kmri2728 10 лет назад +1

    Hi. I would just like you to clarify this if you may so please, but isn't coenzyme a cofactor? Aren't cofactors be classified by the tightness of their bind to an enzyme: to be as a coenzyme --a loosely bounded organic cofactor; or a prosthetic group --a tightly bounded (may be organic or inorganic) cofactor? I would greatly appreciate if someone can clear this stuff. Thanks!~

    • @honeyzbest564
      @honeyzbest564 5 лет назад

      ruclips.net/video/x4amk8bABUA/видео.html

  • @rpentertainment5790
    @rpentertainment5790 6 лет назад

    prosthetic group is always organic in nature

    • @williectk7944
      @williectk7944 6 лет назад

      Not necessarily. Prosthetic group could also be a metal ion which is an integrated part of the enzyme; a) hold the enzyme together (to maintain its catalytically active conformation); b), 1. Bind to the enzyme (usually at its active site), and hold the enzyme together; 2. and participates in the catalysis. In both cases (a & b) metal ion is a catalytically essential factor of the enzyme. Enzyme cannot perform without it.

    • @honeyzbest564
      @honeyzbest564 5 лет назад

      ruclips.net/video/x4amk8bABUA/видео.html

  • @SLPSRocks
    @SLPSRocks 7 лет назад +2

    I may be wrong, but I thought that coenzymes are one of two classes of cofactors. That is to say, coenzymes are in fact cofactors, that are not ions (like Mg) but rather prosthetic groups or cosubstrates.

    • @ayushisingh9222
      @ayushisingh9222 6 лет назад +1

      SLPSRocks 2 not 3 co factors and you are right

    • @munawwarshaikh8010
      @munawwarshaikh8010 4 года назад

      This video was so simple before I saw this comment section.
      How can we unsee something?

  • @ben315to405thenstop
    @ben315to405thenstop 11 лет назад +1

    Wow

  • @ayatarek5
    @ayatarek5 9 лет назад +1

    ThanxXx : ]

  • @rohantuli4855
    @rohantuli4855 10 лет назад +5

    I swear all co-factors are inorganic (at 4:00). Or am I wrong?

    • @justicemallen3412
      @justicemallen3412 7 лет назад +1

      some are organic

    • @mokashfasaeed612
      @mokashfasaeed612 6 лет назад +1

      Rohan Tuli Co-factors can be either inorganic (e.g. metal ions) or organic (e.g. flavin and heme).

    • @honeyzbest564
      @honeyzbest564 5 лет назад

      ruclips.net/video/x4amk8bABUA/видео.html

  • @hannahperez2264
    @hannahperez2264 10 лет назад +10

    Good, but your voice is so soothing it makes me want to sleep....ZzzzzzZZZzzZ

  • @_solav_khairaddin80
    @_solav_khairaddin80 3 года назад

    💙

  • @rogerscottcathey
    @rogerscottcathey 4 года назад

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

  • @dylangarrett8133
    @dylangarrett8133 7 лет назад +1

    This is highly neglected in disease research..

  • @safaamohammed2541
    @safaamohammed2541 4 года назад

    Great!