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FBL Antibody (Center P212) Blocking Peptide

Synthetic peptide

Product Information
Primary Accession P22087
Clone Names 80317174
Peptide ID 80317174
Additional Information
Gene ID 2091
Other Names rRNA 2'-O-methyltransferase fibrillarin, 211-, 34 kDa nucleolar scleroderma antigen, Histone-glutamine methyltransferase, FBL, FIB1, FLRN
Target/Specificity The synthetic peptide sequence used to generate the antibody AP2776d was selected from the Center region of human FBL. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay.
Format Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.
PrecautionsThis product is for research use only. Not for use in diagnostic or therapeutic procedures.
Protein Information
Name FBL
Synonyms FIB1, FLRN
Function S-adenosyl-L-methionine-dependent methyltransferase that has the ability to methylate both RNAs and proteins. Involved in pre-rRNA processing by catalyzing the site-specific 2'-hydroxyl methylation of ribose moieties in pre-ribosomal RNA. Site specificity is provided by a guide RNA that base pairs with the substrate. Methylation occurs at a characteristic distance from the sequence involved in base pairing with the guide RNA. Also acts as a protein methyltransferase by mediating methylation of 'Gln-105' of histone H2A (H2AQ104me), a modification that impairs binding of the FACT complex and is specifically present at 35S ribosomal DNA locus (PubMed:24352239).
Cellular Location Nucleus, nucleolus Note=Fibrillar region of the nucleolus
Research Areas
Citations (0)

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FBL is a component of a nucleolar small nuclear ribonucleoprotein (snRNP) particle thought to participate in the first step in processing preribosomal RNA. It is associated with the U3, U8, and U13 small nuclear RNAs and is located in the dense fibrillar component (DFC) of the nucleolus. This protein contains an N-terminal repetitive domain that is rich in glycine and arginine residues, like fibrillarins in other species. Its central region resembles an RNA-binding domain and contains an RNP consensus sequence. Antisera from approximately 8% of humans with the autoimmune disease scleroderma recognize fibrillarin.


Amin,M.A., Biochem. Biophys. Res. Commun. 360 (2), 320-326 (2007)Dunphy,J.L., Traffic 8 (6), 661-672 (2007)

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$ 80.00
Cat# BP2776d
(40 western blots)
Availability: In Stock
Bulk Size
Seasonal Special on Bulk Order
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