US PATENT SUBCLASS 530 / 317
.~ Cyclic peptides

Current as of: June, 1999
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530 /   HD   CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF

300  DF  PEPTIDES OF 3 TO 100 AMINO ACID RESIDUES {29}
317.~ Cyclic peptides {3}
318  DF  .~.~> The cyclisation occurring through the 4-amino radical of 2,4-diamino butanoic acid {1}
320  DF  .~.~> Bacitracin; related peptides
321  DF  .~.~> Containing only normal peptide links in the ring, i.e., homodetic cyclic peptides

DEFINITION

Classification: 530/317

Cyclic peptides:

Peptides under subclass 300 containing at least one ring fused only through peptide bonds.

(1) Note. The peptide bond may be other than that formed by the alpha amino nitrogen, e.g., through the 4 amino groups of 2,4 diamino butanoic acid (2,4 DAB).

(2) Note. Cyclic compounds in which one or more links in the ring are nonpeptide bonds are called heterodectic cyclic peptides.

(3) Note. Examples, alamethicin, amanitins, antamanide, cyclosporins, ennlatins, ferrichrome, mycovbacillin, phalloidine

(4) Note. Mesh tree number: D12.644.641

SEE OR SEARCH CLASS

930, Peptide or Protein Sequence,

270, for cyclic peptides excluding those cyclic due to intrachain disulfide bonds.