•Structural: Actin is an example it is a major component of the cells architecture as well as the contractile apparatus
•Carriers:
Hemoglobin is an example. It
functions to carry O2 to tissue and
eliminate CO2
•Regulatory: Transcription factors bind to DNA a control the level of mRNA that is produced
•Transport: EGFR-epithelial growth factor receptor. Binds
EGF and signals for cell growth.
•Binders:
Immunoglobulin proteins or antibodies- bind to foreign proteins and destroy infectious agents.
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