ENA meaning in Medical ?

Answer: What is Extractable Nuclear Antigens mean?

Extractable Nuclear Antigens (ENAs) are over 100 different soluble cytoplasmic and nuclear antigens. They are known as “extractable” because they can be removed from cell nuclei using saline and represent six main proteins: Ro, La, Sm, RNP, Scl-70, Jo1. Most ENAs are part of spliceosomes or nucleosomes complexes and are a type of small nuclear ribonucleoprotein (snRNPS). The location in the nucleus and association with spliceosomes or nucleosomes results in these ENAs being associated with additional RNA and proteins such as polymerases. This quality of ENAs often makes it difficult to purify and quantify their presence for clinical use.

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