Skip to main content
. 2026 Feb 19;15(2):232. doi: 10.3390/pathogens15020232
Abbreviation Full Name
5′pppRNA 5′-triphosphate RNA
A172 Human glioblastoma cell line
A549 Human lung carcinoma epithelial cell line
Ala Alanine
Arg Arginine
AS1/2 Allosteric site1/2
Asp Aspartic acid
AV-C 1-(2-fluorophenyl)-2-(5-isopropyl-1,3,4-thiadiazol-2-yl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione
Bz-nKRR-H Benzoyl-norleucine-Lys-Arg-Arg-aldehyde
BHK-21 Baby hamster kidney-21 cells
C Capsid
Catalytic triad (Ser-His-Asp)
CARD–CARD Caspase activation and recruitment domain
CC50 50% cytotoxic concentration
CDNs Cyclic dinucleotides
cGAMP Cyclic GMP–AMP
cGAS Cyclic GMP–AMP synthase
CLRs C-type lectin receptors
CN-716 Boronic peptide CN-716 inhibitor
Compound 32 α-Ketoamide inhibitor
Compound 6 Boroleucine-derived covalent inhibitor
Compound 7 Boronic acid peptide inhibitor
CRISPR/Cas9 Clustered Regularly Interspaced Short Palindromic Repeats/CRISPR-associated protein 9
CYD Chimeric yellow fever–dengue
CYD-TDV Chimeric yellow fever–dengue tetravalent dengue vaccine (Dengvaxia)
Cys Cysteine
DENV Dengue virus
DENV-1 Dengue virus serotype 1
DENV-2 Dengue virus serotype 2
DENV-3 Dengue virus serotype 3
DENV-2 PDK-53 Dengue virus serotype 2 attenuated strain PDK-53
DSDP Dispiro-diketopiperazine STING agonist
dsRNA Double-stranded RNA
E Envelope protein
EC50 Half-maximal effective concentratio
EC68 68% effective concentration
EMA European Medicines Agency
ER Endoplasmic reticulum
FDA Food and Drug Administration
GAF Gamma-activated factor
GAS Gamma-activated sequences
Gln Glutamine
Glu Glutamic acid
Gly Glycine
HepG2 Human hepatoma cells
HFF-1 Human foreskin fibroblasts
His Histidine
hmdDCs Human monocyte-derived dendritic cells
HST Hesperidin
Huh7 Human hepatoma cell line
Huh7.5 Human hepatoma cell line
IC50 Half-maximal inhibitory concentration
IC90 90% inhibitory concentration
IFIT1 Interferon-induced protein with tetratricopeptide 1
IFIT2 Interferon-induced protein with tetratricopeptide 2
IFITM1 Interferon-induced transmembrane protein 1
IFN-I/ IFN-α/IFN-β Type I interferons
IFN-II/IFN-γ Type II interferons
IFN-III/IFN-λ Type III interferons
IFNAR1 Interferon-alpha/beta receptor 1
IFNAR2 Interferon-alpha/beta receptor 2
IFNGR1 Interferon-gamma receptor 1
IFNGR2 Interferon-gamma receptor 2
IFNLR1 Interferon lambda receptor 1
IFNs Interferons
IgG1 Immunoglobulin G subclass 1
IgG2a/c Immunoglobulin G subclass 2a and 2c
IgG2c Immunoglobulin G subclass 2c
IKK IκB kinase
IL-10R2 Interleukin-10 receptor 2
IL-1β Interleukin-1β
IL-2 Interleukin-2
IL-28A/B Interleukin-28A/B
IL-29 Interleukin-29
IL-6 Interleukin-6
Ile Isoleucine
IRAK 1/4 Interleukin-1 receptor-associated kinase 1/4
IRF3 Interferon regulatory factor 3
IRF7 Interferon regulatory factor 7
IRF9 Interferon regulatory factor 9
IRFs Interferon regulatory factors
ISG15 Interferon-stimulated gene 15
ISG54 Interferon-stimulated gene 54 (IFIT2)
ISG56 Interferon-stimulated gene 56 (IFIT1)
ISGF3 Interferon-stimulated gene factor 3
ISGs Interferon-stimulated genes
ISREs Interferon-stimulated response elements
JAK1 Janus kinase 1
JAK2 Janus kinase 2
JAK-STAT Janus kinase-signal transducer and activator of transcription pathway
Ki Inhibition constant
Ki_ii Second-order inhibition constant (slow-binding inhibition constant)
Kᴰ Dissociation constant
LBHB Low-barrier hydrogen bond
LBHBs Low-barrier hydrogen bonds
Leu Leucine
Lys Lysine
MAVS Mitochondrial antiviral signaling protein
MD Molecular dynamics
MDA5 Melanoma differentiation-associated protein 5
MEK/ERK Mitogen-Activated Protein Kinase/Extracellular signal-Regulated Kinase
Met Methionine
MX1 Myxovirus resistance protein 1
MX2 Myxovirus resistance protein 2
MyD88 Myeloid differentiation primary response 88
NAR Naringenin
NF-κB Nuclear factor kappa-B
NK Natural killer cell
Nle Norleucine
NLRs NOD-like receptors
NMR Nuclear magnetic resonance
NPASS Natural Product Activity and Species Source
NS Nonstructural proteins
NS2B–NS3 Nonstructural 2B–3 protease
NTPase Nucleoside-triphosphatase
OAS3 Oligoadenylate synthetase 3
ORF Open reading frame
P1-P4 side chain Substrate residues on the N-terminal side of the scissile peptide bond (following Schechter and Berger nomenclature)
p38 MAPK p38 mitogen-activated protein kinase
PAMPs Pathogen-associated molecular patterns
PBMCs Peripheral blood mononuclear cells
Phe Phenylalanine
PKR Protein Kinase R
poly(I:C) Polyinosinic:polycytidylic acid
prM Pre-membrane protein
prM/M Premembrane/membrane protein
Pro Proline
PRRs Pattern-recognition receptors
R848 Resiquimod
RIG-I Retinoic acid-inducible gene I
RLRs RIG-I-like receptors
RSAD2 Viperin
S1–S4 Protease subsites that accommodate the P1–P4 substrate residues (following Schechter and Berger nomenclature)
SAR Structure–Activity Relationship
Ser Serine
SI Selectivity index
ssRNA Single-stranded RNA
STAT1 Cytoplasmic transcription factors 1
STAT2 Cytoplasmic transcription factors 2
STING Stimulator of interferon genes
TAK-003 tetravalent live-attenuated dengue vaccine (Qdenga®)
TBK1 TANK-binding kinase 1
TFMK Trifluoromethyl ketone
THF Human fibroblasts with extended replicative lifespan
Thr Threonine
TLR2 Toll-like receptor 2
TLR3 Toll-like receptor 3
TLR4 Toll-like receptor 4
TLR7 Toll-like receptor 7
TLR8 Toll-like receptor 8
TLR9 Toll-like receptor 9
TLRs Toll-like receptors
TNF-α Tumor necrosis factor-α
TRAF6 TNF receptor-associated factor 6
TRIF TIR-domain-containing adapter-inducing interferon-β
Trp Tryptophan
TV-003/TV-005 Butantan-DV
TYK2 Tyrosine Kinase 2
Tyr Tyrosine
U937-DC-SIGN U937 monocytes expressing DC-SIGN
UTR Untranslated region
Val Valine
Vero African green monkey kidney epithelial cell line
Vero E6 African green monkey kidney epithelial cell line E6
WHO World Health Organization
WNV West Nile virus
WSL-75 Phenoxymethylphenyl-derived inhibitor WSL-75
WSL-84 Phenoxymethylphenyl-derived inhibitor WSL-84
YFV Yellow fever virus
ZIKV Zika virus
Note: Amino acid numbers (e.g., Ser135, His51, Asp75) refer to residue numbering within the NS2B–NS3 protease sequence of the corresponding Flavivirus.