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Descriptor in English: Peptides
Descriptor in Spanish: Péptidos
Descriptor in Portuguese: Peptídeos
Descriptor in French: Peptides
Entry term(s): Polypeptides
Tree number(s): D12.644
Scope note: Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
Annotation: general; prefer specifics; fewer than 13 amino acids = oligopeptides; "primary structure" = PROTEIN STRUCTURE, PRIMARY see AMINO ACID SEQUENCE; peptide structure other than primary: coordinate IM with PROTEIN CONFORMATION or its specifics
Allowable Qualifiers: AD administration & dosage
AE adverse effects
AG agonists
AI antagonists & inhibitors
AN analysis
BL blood
CF cerebrospinal fluid
CH chemistry
CL classification
CS chemical synthesis
DE drug effects
DF deficiency
EC economics
GE genetics
HI history
IM immunology
IP isolation & purification
ME metabolism
PD pharmacology
PH physiology
PK pharmacokinetics
PO poisoning
RE radiation effects
SD supply & distribution
ST standards
TO toxicity
TU therapeutic use
UR urine
See also the descriptors: Amino Acid Sequence MeSH
DeCS UI: 10648
Descriptor UI: D010455
Date Established: 1966/01/01
Date of Entry: 1999/01/01
Revision Date: 2004/07/07
Peptides - Preferred
Concept UI M0016238
Scope note Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
Preferred term Peptides
Polypeptides - Narrower
Concept UI M0456187
Preferred term Polypeptides



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