Sophie.cerys
Badges: 13
Rep:
?
#1
Report Thread starter 2 years ago
#1
How do you number to carbon atoms in biological molecules like glucose? I know you get 1,4/1,6 glycosidic bonds for example, but what is it about the carbon atoms that makes them carbon 1,4 or 6?
0
reply
macpatgh-Sheldon
Badges: 20
Rep:
?
#2
Report 2 years ago
#2
It is convention to name carbon atoms starting at a particular atom (I googled "Standard Numbering System AND biochemistry" [boolean search] for you but there is no set of guidelines anywhere, nor in my volume on biochemistry by Voet et al [from which the diagrams below are taken]), and working in a certain direction in sequence - in the case of glucose, you start [with 1] at the carbon furthest from the -CH2OH [whose C atom is labelled 6] and work clockwise. (see pic below - new post from phone) - it seems like this system varies with the type of molecule (see diagram of cholesterol below):-

randombiochemist : are you able to help us with the criteria of the Standard Numberring System, please?
0
reply
macpatgh-Sheldon
Badges: 20
Rep:
?
#3
Report 2 years ago
#3
Name:  IMG_20190114_111203.jpg
Views: 92
Size:  200.4 KB
Name:  IMG_20190114_110936.jpg
Views: 62
Size:  165.7 KB
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

What factors affect your mental health the most right now?

Anxiousness about lockdown easing (63)
4.62%
Uncertainty around my education (212)
15.53%
Uncertainty around my future career prospects (151)
11.06%
Lack of purpose or motivation (192)
14.07%
Lack of support system (eg. teachers, counsellors, delays in care) (59)
4.32%
Impact of lockdown on physical health (78)
5.71%
Loneliness (123)
9.01%
Financial worries (47)
3.44%
Concern about myself or my loves ones getting/having been ill (63)
4.62%
Exposure to negative news/social media (63)
4.62%
Lack of real life entertainment (72)
5.27%
Lack of confidence in making big life decisions (118)
8.64%
Worry about missed opportunities during the pandemic (124)
9.08%

Watched Threads

View All