NOP1 Mouse Monoclonal Antibody [Clone ID: 38F3]

Specifications

Product Data
Clone Name	38F3
Applications	IF, IHC, WB
Recommend Dilution	Western Blot: 1/1,000. Immunofluorescence: 1/500. Immunohistochemistry.
Reactivity	C. elegans, Drosophila, Human, Plant, Rat
Host	Mouse
Clonality	Monoclonal
Immunogen	Yeast nuclear preparations.
Specificity	Specific for the ~34kDa Fibrillarin /Nop1p protein. This antibody is becoming widely used as a convenient marker for nucleoli in a wide variety of species (e.g. 4-6).
Formulation	State: Ig Fraction State: Liquid Total IgG fraction Preservative: 10 mM Sodium Azide
Conjugation	Unconjugated
Storage Condition	Upon receipt, store (in aliquots) at -20°C to -80°C. Avoid repeated freezing and thawing.
Database Link	UniProt ID P15646
Background	Nop1p was originally identified as a nucleolar protein of bakers yeast, Saccharomyces cerevisiae. The Nop1p protein is 327 amino acids in size (34.5kDa), is essential for yeast viability, and is localized in the nucleoli (1). The systematic name for S. cerevisiae Nop1 is YDL014W, and it is now known to be part of the small subunit processome complex, involved in the processing of pre-18S ribosomal RNA. Nop1p is the yeast homologue of a protein found in all eukaryotes and archea generally called fibrillarin (2). Fibrillarin/Nop1p is extraordinarily conserved, so that the yeast and human proteins are 67% identical, and the human protein can functionally replace the yeast protein. Patients with the autoimmune disease scleroderma often have strong circulating autoantibodies to a ~34kDa protein which was subsequently found to be fibrillarin. Recent studies show that knock-out of the fibrillarin gene in mice results in embryonic lethality, although mice with only one functional fibrillarin/Nop1p gene were viable (3).
Synonyms	FIB1, FLRN, Fibrillarin, RNU3IP1, NOP1, LOT3, Nucleolar protein 1, Nucleolar Marker
Reference Data

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