The current definition for a binding protein, "to bind two or more molecules together," is inaccurate and misleading. This definition incorrectly describes the function of a ligase enzyme and excludes the primary roles of most binding proteins, such as transport, regulation, and sequestration.


For example, classic binding proteins like hemoglobin (binds O₂ for transport) or DNA-binding proteins (bind to DNA to regulate transcription) do not act to join multiple molecules together. The current definition would incorrectly exclude these essential examples.


The proposed change to "non-covalently bind other molecules to transport, stabilize, or regulate them" is a more accurate definition.


Source:
Other cards in the AnKing Deck: The functions described in cards for hemoglobin, transcription factors, and hormone receptors all fit the proposed definition of a binding protein, but not the original one. This change improves the deck's internal consistency.


Regarding extra section: There are many types of DNA binding proteins: Transcription Factors: Bind to specific sequences on double-stranded DNA to regulate gene expression.

Histones: Bind to double-stranded DNA to compact it into chromatin.

DNA Polymerase: Binds to a single-stranded DNA template to synthesize a new strand.

Single-Strand Binding Proteins (SSBs): A sub-category.