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lipid and steroid

Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.

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lipid and steroid

Postby yauhiulok » Wed Feb 02, 2005 4:12 am

what are the different between lipid and steroid??
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Re: lipid and steroid

Postby bizzaroSquirrel » Wed Feb 02, 2005 7:50 am

yauhiulok wrote:what are the different between lipid and steroid??


Lipids include the molecules like triglycerides and cholesterol. Usually used in cellular structure, like the lipidmembrane :wink: , also energy sources, and signalling i think.

Steriods are made (exclusively??) from cholesterol, a lipid.

Im tired, need bed, maybe someone else can elaborate.
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Postby Poison » Wed Feb 02, 2005 4:06 pm

The answer is short: steroids are a type of lipids. :)
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Postby yauhiulok » Wed Feb 02, 2005 9:54 pm

thank you
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Postby Poison » Wed Feb 02, 2005 10:30 pm

No problem :)
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Postby thank.darwin » Thu Feb 03, 2005 8:00 pm

Poison wrote:The answer is short: steroids are a type of lipids. :)


Yes you are right but they are built differently - The don't have three fatty acid tails and glycerol
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Postby Poison » Thu Feb 03, 2005 11:54 pm

Did I say they do? :) (My answer was too short, I guess... :lol: )
A steroid is a lipid formed of four carbon rings. (not the well known structure: 3 fatty acids+ 1 glycerol) Steroids differ one another chiefly in the kind of R groups attached to these rings.
Steroids are categorized according to function. Some steroids are hormones, which regulate cellular activity; some are vitamins, which have various functions; and athers are cholesterol, which contributes to the structure of some cellular membranes. Cholesterol is also the fundamental molecule from which all steroids derived.
have a look at the link to see the structure:

http://www.genome.jp/kegg/catalog/cpd_steroid.html
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Postby thank.darwin » Fri Feb 04, 2005 8:41 pm

Thank-you for adding that - I just wanted yauhiulok to understand that they aren't built the same
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Postby Maxwell » Sun Feb 06, 2005 2:31 am

There's more to lipids than the popular triglycerides:

Don't forget the phospholipid membranes that enclose cells.
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Postby thank.darwin » Thu Feb 10, 2005 2:11 am

Trust me Maxwell we have not forgotten the phospholipid membrane!
We were just tring to explain to yauiulok that lipids are a type of steroid
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Postby yauhiulok » Thu Feb 10, 2005 8:53 am

ya that really helped alot, now i have a much better understanding of steroids and lipids, thx a bunch
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