Across
- 4. a biomolecule that acts as a catalyst to speed up specific chemical reactions
- 8. a protein component of the immune system that circulates in the blood, recognizes foreign substances like bacteria and viruses, and neutralizes them.
- 11. are activated or inhibited by substances produced in the pathway in which the enzymes function
- 12. molecules that combine to form proteins
- 17. the unfolding or breaking up of a protein, modifying its standard three-dimensional structure
- 19. the overall three-dimensional arrangement of its polypeptide chain in space
- 21. a region of a protein's polypeptide chain that is self-stabilizing and that folds independently from the rest
- 22. when two molecules (monomers) interact with each other
- 23. an enzyme that catalyzes the transfer of phosphate groups from high-energy, phosphate-donating molecules to specific substrates
- 24. the structural arrangement of many proteins in which two or more short regions of the polypeptide chain align adjacently and are stabilized by hydrogen bonds into sheets with a pleated or accordionlike appearance.
- 25. The three-dimensional arrangement of side groups on a molecule which canfreely rotate into different positions without breaking any bonds
Down
- 1. an enzyme that removes a phosphate group from a protein.
- 2. the coiled structural arrangement of many proteins consisting of a single chain of amino acids stabilized by hydrogen bonds.
- 3. the folding of a polypeptide chain, resulting in an alpha helix, beta sheet or a random coil structure
- 5. is a group of proteins that share a common evolutionary origin, reflected by their related functions and similarities in sequence or structure
- 6. molecule acted upon by an enzyme
- 7. the sequence of amino acids linked together to form a polypeptide chain
- 9. the transfer of phosphate molecules to a protein
- 10. the first part of the protein that exits the ribosome during protein biosynthesis
- 13. a chemical bond that is formed by joining the carboxyl group of one amino acid to the amino group of another
- 14. the association of several protein chains or subunits into a closely packed arrangement
- 15. a naturally occurring, extremely complex substance that consists of amino acid residues joined by peptide bonds.
- 16. an area on an enzyme, DNA or RNA to which particular molecules or ions attach
- 18. The end of a peptide or protein primary structure in which the amino acid residue's carbonyl group is not part of a peptide bond
- 20. a molecule that can bind to a receptor