US PATENT SUBCLASS 530 / 402
.~ Chemical modification or the reaction product thereof, e.g., covalent attachment or coupling, etc.

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

350  DF  PROTEINS, I.E., MORE THAN 100 AMINO ACID RESIDUES {14}
402.~ Chemical modification or the reaction product thereof, e.g., covalent attachment or coupling, etc. {5}
403  DF  .~.~> Protein is identified as an antigen, e.g., immunogenic carriers, etc. {3}
407  DF  .~.~> Hydrolysis of protein
408  DF  .~.~> Sulfur containing reactant
409  DF  .~.~> Nitrogen containing reactant
410  DF  .~.~> Oxygen containing reactant {1}

DEFINITION

Classification: 530/402

Chemical modification or the reaction product thereof, e.g., covalent attachment or coupling, etc.:

Subject matter under 350 including a step of chemically modifying a protein or the product of such modification.

(1) Note. Chemical modification includes conjugation of a protein with a nonpeptide compound or addition of simple chemical elements or compounds to the protein as well as sundering parts of a large protein molecule.

(2) Note. Treatment to deliberately change the secondary, tertiary or quaternary structure of a polypeptide is

considered chemical modification.

(3) Note. Other subclasses provide for protein conjugates that occur in nature. Nucleoproteins are in subclass 358. Lipoproteins are in subclass 359. Metalloproteins in subclasses 400 and 401.

(4) Note. Immobilized Proteins. Cross-reference art collections 810+ provide for carrier bound or immobilized proteins where the protein is combined chemically or physically with a carrier that insolubilized it or otherwise aids in the recovery of the protein from solution.

(5) Note. This subclass provides for melanoidin resulting from Mallard type reactions between amino acids and sugars.

SEE OR SEARCH CLASS 524, Synthetic Resins or Natural Rubbers,

9+, for plant or derived cellular material, subclasses 17+ for proteins or biologically active polypeptides for a process in which the protein or polypeptide is physically mixed with a preformed resin and subclasses 70+ for a process of adding a protein or biologically active polypeptide to resin forming ingredients during reaction of the resin formers and the protein of polypeptide is nonreactive.

525, Synthetic Resins or Natural Rubbers,

54.1, for the chemical reaction of a peptide or protein with a preformed resin and subclass 54.11 for processes of stepwise assembly of a polypeptide on a preformed polymer i.e., solid phase synthesis when there is no claimed cleavage of synthesized polypeptide.