Protein

1)Fibrous protein are structural proteins that have a secondary structure. But why collagen(fibrous protein ) has tertiary structure?

For fibrous protein:
Different proteins may have similar shape, and the length of the same protein may vary

But what same protein?

2)prosthetic group means inorganic or non-protein?

Thanks!!!!!!!!!

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Reply 1

BFP=big fat poo

Right OK

A tertiary structure is basically two or more proteins bonded together. Collagen is three strands of protein/fibre which are wound into a helix shape, and they are bonded by hydrogen bonds.

Umm i need a bit more info about what you mean by the same protein bit!! soz

A prosthetic group is an additional group added to a protein that isn't directly part of the proetin, but is vital to the proteins function. For instance in haemoglobin, the prosthetic group is iron, which is inorganic

Hope that helped!!! :smile:

Reply 2

onefour

The above post is correct except that the assembly of multiple proteins forms a quaternary (not tertiary) structure - collagen is comprised of three protein strands that each have a helical structure to form a larger helix which has greater structural stability.