Important to remember that hexokinase can convert fructose to F-6-P to be used in glycolysis which is one of the reasons fructokinase deficiency is so benign :)
another tiny detail to add, since in aldolase b deficiency, you have wasting of energy, the body's ATPs are depleted so much that all you are left with is ADP. Being in this low energy state, body tries to make ATP so that it can carry out other functions that need it. So it combines two ADPs : ADP+ADP=> ATP+AMP. SO ATP is formed but a AMP is left behind as a result. AMP is then acted upon by AMP deaminase to form IMP..which through a series of steps lead to uric acid prod. So you'd also get hyperuricemia in the setting of aldolase b deficiency. this is why patients with gout are advised to decrease their fructose intake.
amazing video and I am absolutely loving the biochem series. I've been hoping you'd upload biochem videos and my mind was blown when I saw all of them uploaded at once yesterday! I have watched so many videos trying to understand biochem, and you are the only one that has put it all together so I get the big picture finally. Thank you so much for what you do, and I will 100% be donating once I take my USMLE. also one way I remember the enzymes is fructoKINDase - so its the nicer more benign disease (which also kinda correlates to galactoKINDase deficiency, which is the more benign of the two galactose deficiencies) and Aldolase B = "B" for BAD disease (also I didn't make those up myself, but I can't remember where they are from)
these videos are absolutely amazing, I never ever ever thought I would be able to retain biochem for usmle until I found this gem of a youtube channel. THANK YOU DirtyUSMLE for changing my life!!!
From my early 20s to my early 50s, I suffered from extreme fructose intolerance. I couldn't drink regular coke/pepsi. I couldn't drink wine coolers, apple juice or pretty much anything with high fructose corn syrup. There were some fruits that were okay, like banana and berries. There were others that were border line and depended on their level of ripeness. During the 30 years, I would sometimes intake fructose on accident. It was teriible. My stomach and entire body would feel like it was on fire and I would break out in a sweat. The only thing that would fix it was regular table sugar. I found this out while researching why ripeness had such a profound effect. It had to do with fructose to glucose ratio. So, now I no longer suffer from this condition. It all changed when I had to retire due to extreme metabolic fatigue. 10 months after I retired, I realized that I had Methylation problems. I went on a robust methylation protocol and I've been much healthier ever since. I know that fixing my Methylation has made my Liver much healthier. Was this just a marker of over-all Liver health or did the Methylation, in general, have something to do with the change?
You keep saying "either" for the breakdown of F1P, but that is not true. It is a 6 carbon moiety that must break down into 2 unequal 3 carbon moieties, one containing the phosphate group and the other not so much (perfectly analogous to the action of Aldolase A, except the substrate has one less phosphate). Any plans to update/redo this video?
YOU ARE AMAZING THANK YOU SO SO MUCH , I'M A MED GRADUATE AND I HAVE NEVER EVER UNDERSTOOD BIOCHEM LIKE I DID AFTER WATCHING THIS SERIES , IM SO HAPPY AND GRATEFUL YOU ARE AWESOME LITERALLY
All fruits have fructose..the reason for sweetness...fructose also has kinds...different in different fruit kind....sugar is from sugarcane ...the fructose...the simplest sugar..we process, make it complex ..
