The present invention is a cytocidal agent including a peptide consisting of an amino acid sequence represented by SEQ ID NO: 1 and a site selectively binding to a target molecule, in which the peptide consisting of an amino acid sequence represented by SEQ ID NO: 1 is a peptide exclusively consisting of L-amino acids, a peptide in which, in amino acid sequences represented by SEQ ID NO: 1, the first to the 14.sup.th amino acids are D-amino acids, and the 15.sup.th to 19.sup.th amino acids are L-amino acids, a peptide in which, in amino acid sequences represented by SEQ ID NO: 1, the first to 14.sup.th amino acids are L-amino acids, and the 15.sup.th to the 19.sup.th amino acids are D-amino acids, or a peptide exclusively consisting of D-amino acids.

The present invention is a cytocidal agent including a peptide consisting of an amino acid sequence represented by SEQ ID NO: 1 and a site selectively binding to a target molecule, in which the peptide consisting of an amino acid sequence represented by SEQ ID NO: 1 is a peptide exclusively consisting of L-amino acids, a peptide in which, in amino acid sequences represented by SEQ ID NO: 1, the first to the 14.sup.th amino acids are D-amino acids, and the 15.sup.th to 19.sup.th amino acids are L-amino acids, a peptide in which, in amino acid sequences represented by SEQ ID NO: 1, the first to 14.sup.th amino acids are L-amino acids, and the 15.sup.th to the 19.sup.th amino acids are D-amino acids, or a peptide exclusively consisting of D-amino acids.

Disclosed are compositions and methods useful for targeting and internalizing molecules into cells of interest and for penetration by molecules of tissues of interest. The compositions and methods are based on peptide sequences that are selectively internalized by a cell, penetrate tissue, or both. The disclosed internalization and tissue penetration is useful for delivering therapeutic and detectable agents to cells and tissues of interest.

Disclosed are compositions and methods useful for targeting and internalizing molecules into cells of interest and for penetration by molecules of tissues of interest. The compositions and methods are based on peptide sequences that are selectively internalized by a cell, penetrate tissue, or both. The disclosed internalization and tissue penetration is useful for delivering therapeutic and detectable agents to cells and tissues of interest.

Disclosed herein are modified C-terminal fragments of FGF21 optimized for binding to Klotho β or antagonizing FGF21 activity. FGF21 peptides modified to comprise modifications to the C-terminal amino acid sequence are disclosed that have enhanced activity at the FGF21 receptor. Additionally, conjugates formed between the optimized FGF21 peptide fragments and insulin like peptides or nuclear hormone receptor ligands are provided.

Disclosed herein are modified C-terminal fragments of FGF21 optimized for binding to Klotho β or antagonizing FGF21 activity. FGF21 peptides modified to comprise modifications to the C-terminal amino acid sequence are disclosed that have enhanced activity at the FGF21 receptor. Additionally, conjugates formed between the optimized FGF21 peptide fragments and insulin like peptides or nuclear hormone receptor ligands are provided.

Disclosed herein are recombinant meganucleases engineered to recognize and cleave a recognition sequence present in the human T cell receptor alpha constant region gene. The present disclosure further relates to the use of such recombinant meganucleases in methods for producing genetically-modified eukaryotic cells.

A polypeptide conjugate for use in a method for binding and/or internalization of the polypeptide conjugate to a mammalian cell having a transferrin receptor (TFRC) and/or receptor for advanced glycation end products (RAGE). The polypeptide conjugate may be used in a method for targeting of a drug delivery system or diagnostic delivery system.

A polypeptide conjugate for use in a method for binding and/or internalization of the polypeptide conjugate to a mammalian cell having a transferrin receptor (TFRC) and/or receptor for advanced glycation end products (RAGE). The polypeptide conjugate may be used in a method for targeting of a drug delivery system or diagnostic delivery system.

Provided are antisense oligomers targeted against bacterial mRNAs and other macromolecules associated with a biochemical pathway and/or cellular process, and related compositions and methods of using the oligomers and compositions to treat an infected mammalian subject, for example, as primary antimicrobials or as adjunctive therapies with classic antimicrobials.