hydrogen bonds(氢键) Hydrogen Bonds in Biological Molecules Hydrogen donor. acceptor Comments m ajor factor in the 0-H:0 structural stability of water 0-H:·0 N-H.0 bonding of water SH to other molecules N-H…0=C 0-H:·0=C very important in structural stability of / H proteins and nucleic N-H。O acids R C.H:··0三C weaker bonds relatively rarehydrogen bonds（氢键）: