NCBI Accession #
NP_567724.1
NCBI GenBank Nucleotide #
NM_118695.4
NCBI Official Full Name
fibrillarin 2
NCBI Official Symbol
FIB2
NCBI Official Synonym Symbols
ATFIB2; fibrillarin 2; L73G19.10; L73G19_10
NCBI Protein Information
fibrillarin 2
NCBI Summary
encodes a fibrillarin, a key nucleolar protein in eukaryotes which associates with box C/D small nucleolar RNAs (snoRNAs) directing 2'-O-ribose methylation of the rRNA. This gene also encodes a novel box C/D snoRNA, U60.2f in its fifth intron that accumulates in seedlings and that their targeted residue on the 25 S rRNA is methylated.
UniProt Synonym Gene Names
FIB2; FLP; MED36_1
UniProt Protein Name
Mediator of RNA polymerase II transcription subunit 36a
UniProt Synonym Protein Names
Fibrillarin-like protein 2; Histone-glutamine methyltransferase; rRNA 2'-O-methyltransferase fibrillarin 2 (EC:2.1.1.-)
UniProt Primary Accession #
Q94AH9
UniProt Secondary Accession #
Q9SZZ1
UniProt Related Accession #
Q94AH9
UniProt Comments
Component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. The Mediator complex, having a compact conformation in its free form, is recruited to promoters by direct interactions with regulatory proteins and serves for the assembly of a functional pre-initiation complex with RNA polymerase II and the general transcription factors.