*	Proposed symbol of phosphate group
~	Proposed symbol of amidation
BLAST	Basic Local Alignment Search Tool
BRENDA	Braunschweig Enzyme Database
[C@] and [C@@]	Symbols of chiral carbon atoms in SMILES code
CID	Compound Identifier (in PubChem database)
ΔF	Symbol of dehydrophenylalanine according to the SATPdb database
EMBL	European Molecular Biology Laboratory
EROP-Moscow	Endogenous Regulatory OligoPeptide knowledgebase-Moscow
HELM	Hierarchical Editing Language for Macromolecules
Hyl	Hydoxylysine
Hyp	Hydroxyproline
InChI	International Chemical Identifier
InChIKey	Key of International Chemical Identifier
IUPAC	International Union of Pure and Applied Chemistry
LINUCS	LInear Notation for Unique description of Carbohydrate Sequences
NCBI	National Center for Biotechnology Information
P	Depending on the context, one-letter symbol of proline or phosphorus symbol
p	Depending on context, one-letter symbol of D-proline or symbol of phosphorylation of amino acid residue
R	One-letter symbol of arginine
(R)	Proposed symbol of configuration of substituents around asymmetric atom: “Rectus”
S	One-letter symbol of serine
(S)	Proposed symbol of configuration of substituents around asymmetric atom: “Sinister”
SATPdb	Structurally Annotated Therapeutic Peptides database
SLN	SYBYL Line Notation
SMILES	Simplified Molecular Input Line Entry System or Simplified Molecular Input Line Entry Specification
UWM	University of Warmia and Mazury in Olsztyn, Poland