What are the differences between globular and fibrous proteins?


Just Globular:spherical structure outward facing hydrophilic R-groups, inward facing hydrophobic R-groups, results in being soluble highly specific tertiary structures so can act as enzymes (catalase, alcohol dehydrogenase, RuBisCO), signalling molecules binding to receptors (insulin) and the binding regions of antibodies.primary structure is non-repetitive (mostly)Often can have a quaternary structure of multiple subunits (haemoglobin)Mineral ion cofactors/coenzymes (haemoglobin/chymotrypsin)Just Fibrous: elongated insoluble repeating primary structure (glycine in collagen)Shared: Both have secondary structures, but structures formed differ (alpha helix/beta-pleated sheet vs triple helix)Both have structures determined by H-bonds, hydrophilic/hydrophobic interactions, ionic bonds and disulphide bridges.
Best explained in bullet point form.

Answered by Biology tutor

4363 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Explain what is meant by counter current exchange in fish? Describe how it works and what adaptations the gills have to assist it.


Describe two ways in which genetic diversity is achieved during meiosis?


What adaptions can a neurone have in order impulses to be transmitted faster?


What makes the alveolus adapted for efficient gas exchange?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning