Abstract: The present invention provides viral integrase inhibiting peptides having the general structure, ##STR1## where Xaa is an amino acid or an amino acid analog, the stereochemistry of the amino acids or amino acid analogs can be D-amino acids or L-amino acids and the amino and carboxy termini of the peptide can be modified. The invention also provides viral inhibiting peptides having essentially the amino acid sequence, ##STR2## The invention also provides a pharmaceutical composition comprising a viral integrase inhibiting peptide and methods of using a viral integrase inhibiting peptide in vitro or in vivo to reduce or inhibit viral integrase activity in a cell and the infectivity of a virus.

Abstract: Synthetic peptide combinatorial libraries (sets) having a single, predetermined amino acid residue at a single, predetermined oligopeptide chain position and mixtures of amino acid residues at the other chain positions are disclosed, as are their processes of synthesis and use in determining the amino acid residue sequence of an oligopeptide ligand that binds to an acceptor molecule.

Abstract: Linear C.sub.1 -C.sub.7 -alkyl peralkylated oligopeptide sets of molecules are specific peralkylated oligopeptides, disclosed, as are their methods of synthesis and use in acceptor binding assays. Each molecule or chain of a set contains the same number of two to about ten substituted C.sub.1 -C.sub.7 -alkyl peralkylated amino acid residues, and the member chains of a set are present in equimolar amounts. The chains of a set contain one or more predetermined peralkylated amino acid residues at one or more predetermined positions of the peralkylated oligopeptide chain. The set contains equimolar amounts of at least six different peralkylated amino acid residues at one or more of the same predetermined positions of the peralkylated oligopeptide chain. Libraries of such sets, processes for their use and solid support-linked peralkylated sets are also contemplated, as are specific permethylated oligopeptides such as those having 5-8 phenylalanine residues that have antimicrobial properties.

Abstract: The present invention provides antiviral peptides having the general structure, Arg-Arg-Trp-Trp-Cys-Arg-X, where X is an amino acid or an amino acid analog, the stereochemistry of the amino acids or amino acid analogs can be (D)- or (L)-amino acids and the amino and carboxy termini of the peptide can be modified. The invention also provides a pharmaceutical composition comprising an antiviral peptide and methods of using an antiviral peptide in vitro or in vivo to reduce or inhibit a herpes simplex virus infection.

Abstract: The present invention provides novel cytokine restraining agents, which limit or control the biological activity of cytokines. The invention also provides pharmaceutical compositions comprising a cytokine restraining peptide and methods of administering the pharmaceutical composition to a subject. The invention further provides methods for using the novel peptides to restrain cytokine activity in a subject.

Abstract: This invention provides novel peptides having the ability to inhibit binding of the mu specific ligand .sup.3 H-[D-Ala.sup.2,MePhe.sup.4,Gly-ol.sup.5 ]enkephalin ("DAGO") to the opioid receptors in crude rat brain homogenate.