ADK1 antibodies are utilized across multiple experimental workflows:
Table 1: Primary Applications and Performance
Application
Tested Dilution/EC₅₀
Key Use Case
Neutralization assays
EC₅₀ ~2 ng/ml (AAV1/AAV6)
Blocks AAV1/AAV6 infection in vitro.
Dot blot
1:500 (0.1 µg/ml)
Detects native AAV1/AAV6 capsids.
Immunofluorescence (IF)
1:20
Visualizes intracellular AAV1 particles.
ELISA
Assay-dependent
Quantifies full/empty AAV1 capsids.
Affinity chromatography
Custom optimization
Purifies AAV1/AAV6 capsids.
Comparative Binding Affinities
ADK1a exhibits high specificity for AAV1, with binding affinities (KD) significantly stronger than its human chimeric derivative (ADK1a-h1):
Table 2: Binding Affinities Across Serotypes
Serotype
Antibody Clone
KD Value
AAV1
ADK1a
<1.0 × 10⁻¹² M
AAV1
ADK1a-h1
8.8 × 10⁻¹² M
AAV6
ADK1a
<1.0 × 10⁻¹² M
AAV6
ADK1a-h1
5.9 × 10⁻¹¹ M
Source: Biolayer interferometry (BLI) data
The human chimeric variant ADK1a-h1 retains neutralizing activity but shows reduced affinity, making it suitable for serology studies requiring humanized components.
Mechanistic Insights from Neutralization Studies
ADK1a effectively inhibits AAV1 and AAV6 transduction by occluding capsid regions essential for cellular entry. In luciferase-based neutralization assays:
Preincubation of ADK1a (2 ng/ml) with AAV1-NanoLuc particles reduces luminescence signal by 50% in HEK293 cells.
Epitope stability under physiological conditions ensures robust neutralization across diverse AAV variants.
ADK1 is an enzyme that catalyzes the ATP-dependent phosphorylation of adenosine and other related nucleoside analogs to monophosphate derivatives. This process is essential for maintaining methyl recycling.
Gene References Into Functions
The nuclear localization of ADK1 and SAHH1 is mediated by their interaction with cap MT. PMID: 21976714