Background:

Ro/SSA is a ribonucleoprotein that binds to autoantibodies in 35 to 50% of patients with SLE and in up to 97% of patients with Sjogren syndrome. The Ro/SSA particle consists of a single immunoreactive protein noncovalently bound with one of four small RNA molecules. Most anti-Ro/SSA-positive sera have antibodies not only against the immunoreactive protein, but also against an Ro/SSA protein. The genes which encode the two proteins map to human chromosomes 11p15.5 and 1q31, respectively. La/SSB is an autoimmune RNA-binding protein that plays a role in the transcription of RNA polymerase III was originally defined by its reactivity with autoantibodies from patients with Sjogren syndrome and SLE.

Specificity:

p-SSB (S366) polyclonal antibody detects endogenous levels of SSB protein only when phosphorylated at Serine 366.

Alternative names:

Autoantigen La; La; La autoantigen; La autoantigen homolog; La protein; La ribonucleoprotein; La ribonucleoprotein domain family member 3; LA; LARP3; Lupus La antigen; Lupus La protein; Lupus La protein homolog; mRNA for autoantigen; Sjoegren syndrome type B antigen; Sjoegren syndrome type B antigen; Sjogren syndrome antigen B; SS B; SS-B; SS-B/La protein; SSB;

Species reactivity:

Human

Host:

Rabbit

Ig type:

Rabbit IgG, 1mg/ml in PBS with 0.02% sodium azide, 50% glycerol, pH7.2

Immunogen:

Synthetic phosphopeptide derived from human SSB around the phosphorylation site of Serine 366.

Purification & Purity:

The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 110% (by SDS-PAGE).

Molecular weight:

~ 52 kDa

Applications:

WB

Usage:

WB: 1:500~1:1000

Storage:

Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze-thaw cycles.

Precautions:

For research use only, not for use in diagnostic procedure.

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