Hey all! I am a 35 years old, active female. I got tested positive on the following and still have a hard time to understand what that could mean for me. I was really sick in January for 2 weeks but according to my 2 self tests I didn’t have COVID. Still I had the feeling I am recovering super slow and in general had a fatigue kind of feeling after going to the gym. Which is why I got tested. I am still active, going to the gym 3 times per week, using my bike to get from A to B. I have more rest days now. I don’t feel super limited but still something feels off ever since I’ve been sick ..read more

hello all, I am currently in a PhD program in biochemistry. I got my MS and undergrad at the same institution i'm at. When joining the program I was excited and happy to study structural biology. I joined a structural lab and then the PI left after my first year and I joined another structural lab and was the only student in the lab. I'm now in my fourth year and have yet to have a novel structure but have some experimental phasing crystals awaiting data collection lined up in next couple week. Unfortunately my PI doesn't like me and tells me almost daily I should quit the program and its got ..read more

I'm wondering if this is how others have felt or if I'm just not fully comprehending everything. submitted by /u/theinfjstudent [visit reddit] [comments ..read more

I hate to be the person asking for homework help but here I am. So I am writing a lit review and I need to include the thermodynamics of how my enzyme (glycogen phosphorylase) works. The basic reaction is: glycogen (n residues) +Pi --> glucose 1-phosphate + glycogen (n-1 residues) So I wrote out a keq expression of keq= [glucose 1-phosphate]/[Pi] In the textbook it says "The reaction catalyzed by phosphorylase is readily reversible in vitro. At pH 6.8, the equilibrium ratio of orthophosphate to glucose 1-phosphate is 3.6. The value of Δ?°′ for this reaction is small because a glycosidic bo ..read more

I have a question relating to biochemistry. I asked a PI I used to work with if he could recommend me structural biology programs for a PhD program as I am in that stage of my education, and he said that doing structural biology alone without a biological focus was "rare" and would be considered "methods development". Could you help explain this to me? I am not entirely sure what this means because I had always assumed structural biology was as detailed as you could get in biochemistry, but apparently there are specific focuses in structural biology too? submitted by /u/Disbosss [visit reddi ..read more

Tomorrow is my biochemistry Viva and practical exam drop your possible questions that May ask in the exam. submitted by /u/novocardin [visit reddit] [comments ..read more

what is the name of the hydrophobic part of cholesterol? submitted by /u/shahrzadno [visit reddit] [comments ..read more

Why and how does it know it has to get pleasure from doing a math operation right, a good 20 minute drawing, etc. submitted by /u/Discobopolis [visit reddit] [comments ..read more

I’ve been planning two experiments with my teacher. I’m looking to produce a calibration curve of absorption of DNA precipitate to concentration of papain. I want to use this to work out concentration of papain in a papaya however I just found out that the papaya contains chymopapain. Is there any way to extract it and discard it so I’m left with just papain. I’m only at college so there isn’t much equipment. The college has an old centrifuge with a max speed of 3000RPM. If you need any more information just ask because I’m not too sure what else to include. Edit: I’m precipitating DNA from s ..read more

I have been reading up on the veterinary drug Ractopamine and its usage in animal husbandry. During my reading, I have frequently encountered the assertions that: No hormones are permitted in pork Ractopamine is permitted in pork as growth-promotant but is not a hormone What is the logic behind deeming ractopamine to be non-hormonal? Ractopamine is a B-adrenergic, meaning it targets the adrenaline receptor. The native ligand, adrenaline, is universally accepted to be a hormone. If ractopamine works by binding to the receptor for a hormone, why is ractopamine not a hormone? Obviously, ractop ..read more