RD19A Antibody

Key Observations from Search Results

The term "RD19" appears exclusively in the context of plant biology research ( ). Specifically:

• RD19 (RESPONSIVE TO DEHYDRATION19) is an Arabidopsis thaliana cysteine protease critical for RRS1-R–mediated resistance against the bacterial pathogen Ralstonia solanacearum.

• It interacts with the bacterial effector PopP2, relocalizing to the nucleus to activate immune responses ( ).

• No studies mention an "RD19A" variant or associated antibodies.

The remaining sources ( – ) focus on CD19, a B cell surface protein targeted in immunology and cancer therapy:

• Anti-CD19 antibodies (e.g., LY3541860 , clone 136.20.1 , and MAB7489R ) are well-characterized tools for modulating B cell function or detecting CD19 in research/clinical settings.

• CD19 antibodies are unrelated to the plant protein RD19.

Potential Explanations for Discrepancy

• Terminology Error: "RD19A" may be a typographical error conflating RD19 (plant protease) with CD19 (human/murine B cell marker).

• Nomenclature Gap: RD19A could represent an uncharacterized isoform or a newly proposed target not yet documented in peer-reviewed literature.

Recommendations for Further Inquiry

If the query intends to reference CD19 antibodies, the following data from the sources may be relevant:

Table 1: Key Anti-CD19 Antibodies and Applications

Table 2: Functional Insights into CD19

• Role in Immunity: CD19 regulates B cell receptor signaling, TLR9 responses, and humoral immunity ( ).

• Therapeutic Targeting: Anti-CD19 antibodies are used to treat B cell malignancies and autoimmune diseases ( ).