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U3-snRNP; U3 small nuclear ribonucleoprotein
Apparently nucleolar in distribution.
General
small nuclear ribonucleoprotein (snRNP)
Properties
COMPARTMENT: cell nucleus
SUBUNITS: U3-snRNA
MOTIF: Sm binding site
EFFECTOR-BOUND: Sm protein
BOUND-VIA: RNA-binding motif
inverted GTP 5' cap structure
rRNA 2'-O-methyltransferase fibrillarin
MOTIF: glycine-rich region {8-77}
binding site
SITE: 143-143
FOR-BINDING-OF: S-adenosylmethionine
S-adenosyl-L-methionine binding {172-173}
S-adenosyl-L-methionine binding {191-192}
S-adenosyl-L-methionine binding {216-217}
binding site
SITE: 236-236
FOR-BINDING-OF: S-adenosylmethionine
Helical {274-306}
U3 small nucleolar ribonucleoprotein protein 11
MOTIF: Tyr phosphorylation site {Y50}
Ser phosphorylation site {S241}
U3 small nucleolar ribonucleoprotein protein IMP3 homolog
MOTIF: arginine-rich region {32-74}
MOTIF: arginine residue (SEVERAL)
RNA-binding motif
SITE: 109-175
FOR-BINDING-OF: ribonucleic acid
nuclear protein
References
Clinical Diagnosis & Management by Laboratory Methods,
19th edition, J.B. Henry (ed), W.B. Saunders Co.,
Philadelphia, PA. 1996, pg 1019
Components
nuclear protein
rRNA 2'-O-methyltransferase fibrillarin; 34 kD nucleolar scleroderma antigen (FBL, FIB1, FLRN)
U3 small nucleolar ribonucleoprotein protein 11; U3 snoRNA-associated protein 11; UTP11-like protein (UTP11L)
U3 small nucleolar ribonucleoprotein protein IMP3 homolog; U3 snoRNP protein IMP3; BRMS2 (IMP3, C15orf12, MRPS4)
U3-snRNA