Enum: IUPACNucleotideCode

Complete IUPAC nucleotide codes including ambiguous bases for DNA/RNA sequences.

Used in FASTA and other sequence formats to represent uncertain nucleotides.

Permissible Values

Value	Title	Description
A	A	Adenine
T	T	Thymine (DNA)
U	U	Uracil (RNA)
G	G	Guanine
C	C	Cytosine
R	R	Purine (A or G)
Y	Y	Pyrimidine (C or T/U)
S		Strong interaction (G or C)
W		Weak interaction (A or T/U)
K		Keto (G or T/U)
M		Amino (A or C)
B		Not A (C or G or T/U)
D		Not C (A or G or T/U)
H		Not G (A or C or T/U)
V		Not T/U (A or C or G)
N		Any nucleotide (A or C or G or T/U)
GAP	-	Gap or deletion in alignment

Slots

Name	Description
iupac_nucleotide	Complete IUPAC nucleotide codes including ambiguous bases for DNA/RNA sequenc...

Identifier and Mapping Information

Schema Source

from schema: https://w3id.org/linkml/valuesets

LinkML Source

name: IUPACNucleotideCode
instantiates:
- valuesets_meta:ValueSetEnumDefinition
description: 'Complete IUPAC nucleotide codes including ambiguous bases for DNA/RNA
  sequences.

  Used in FASTA and other sequence formats to represent uncertain nucleotides.'
title: IUPAC Nucleotide Ambiguity Codes
from_schema: https://w3id.org/linkml/valuesets
contributors:
- orcid:0000-0002-6601-2165
- https://github.com/anthropics/claude-code
status: DRAFT
rank: 1000
permissible_values:
  A:
    text: A
    description: Adenine
    title: A
  T:
    text: T
    description: Thymine (DNA)
    title: T
  U:
    text: U
    description: Uracil (RNA)
    title: U
  G:
    text: G
    description: Guanine
    title: G
  C:
    text: C
    description: Cytosine
    title: C
  R:
    text: R
    description: Purine (A or G)
    title: R
  Y:
    text: Y
    description: Pyrimidine (C or T/U)
    title: Y
  S:
    text: S
    description: Strong interaction (G or C)
  W:
    text: W
    description: Weak interaction (A or T/U)
  K:
    text: K
    description: Keto (G or T/U)
  M:
    text: M
    description: Amino (A or C)
  B:
    text: B
    description: Not A (C or G or T/U)
  D:
    text: D
    description: Not C (A or G or T/U)
  H:
    text: H
    description: Not G (A or C or T/U)
  V:
    text: V
    description: Not T/U (A or C or G)
  N:
    text: N
    description: Any nucleotide (A or C or G or T/U)
  GAP:
    text: GAP
    description: Gap or deletion in alignment
    title: '-'