Interacting selectively with any peptide with hormonal activity in animals.

Interacting selectively with adrenocorticotropin-releasing hormone.

The chemical reactions involving cytokinins, a class of adenine-derived compounds that can function in plants as growth regulators.

Interacting selectively with Rho protein, any member of the Rho subfamily of the Ras superfamily of monomeric GTPases. Proteins in the Rho subfamily are involved in relaying signals from cell-surface receptors to the actin cytoskeleton.

The formation from simpler components of cytokinins, a class of adenine-derived compounds that can function in plants as growth regulators.

Interacting selectively with the GTP-bound form of the Rho protein.

Catalysis of the reaction: amino acid(out) + K+(out) = amino acid(in) + K+(in).

Interacting selectively with the enzyme DNA topoisomerase I.

Rap guanyl-nucleotide exchange factor activity

Stimulates the hydrolysis and exchange of guanyl nucleotides by the GTPase Rap.

The directed movement of proteins into a cell or organelle.

Catalysis of the release of an N-terminal dipeptide from a peptide comprising four or more residues, with broad specificity; also acts on dipeptidyl 2-naphthylamides.

The formation from simpler components of antibiotic, a substance produced by or derived from certain fungi, bacteria, and other organisms, that can destroy or inhibit the growth of other microorganisms.

The breakdown into simpler components of antibiotic, a substance produced by or derived from certain fungi, bacteria, and other organisms, that can destroy or inhibit the growth of other microorganisms.

Combining with activin, one of two gonadal glycoproteins related to transforming growth factor beta, to initiate a change in cell activity.

The covalent linkage of heme and a protein.

The aggregation and bonding together of a cytochrome.

Catalysis of the hydrolysis of covalent intermediates (in DNA backbone breakage) between DNA topoisomerase I and DNA.

The covalent linking of a tetrapyrrole to a protein.