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MBNL1 / MBNL

muscleblind-like splicing regulator 1

Mediates pre-mRNA alternative splicing regulation. Acts either as activator or repressor of splicing on specific pre-mRNA targets. Inhibits cardiac troponin-T (TNNT2) pre-mRNA exon inclusion but induces insulin receptor (IR) pre-mRNA exon inclusion in muscle. Antagonizes the alternative splicing activity pattern of CELF proteins. Regulates the TNNT2 exon 5 skipping through competition with U2AF2. Inhibits the formation of the spliceosome A complex on intron 4 of TNNT2 pre-mRNA. Binds to the stem-loop structure within the polypyrimidine tract of TNNT2 intron 4 during spliceosome assembly. Binds to the 5'-YGCU(U/G)Y-3'consensus sequence. Binds to the IR RNA. Binds to expanded CUG repeat RNA, which folds into a hairpin structure containing GC base pairs and bulged, unpaired U residues.

Gene Name: muscleblind-like splicing regulator 1
Synonyms: MBNL1, EXP35, EXP40, KIAA0428, Muscleblind (Drosophila)-like, Muscleblind-like protein 1, MBNL, EXP, EXP42, Muscleblind-like (Drosophila)
Target Sequences: NM_021038 NP_066368.2 Q9NR56

Publications (3)

1
Ribonuclear inclusions in skeletal muscle in myotonic dystrophy types 1 and 2. Mankodi A, Teng-Umnuay P, Krym M, Henderson D, Swanson M, Thornton CA. Annals of neurology. 2003 54:760-8. [PubMed:14681885]
2
Large-scale remodeling of a repressed exon ribonucleoprotein to an exon definition complex active for splicing. Wongpalee SP, Vashisht A, Sharma S, Chui D, Wohlschlegel JA, Black DL. eLife. 2016 5: (WB; Human) [Full Text Article] [PubMed:27882870] [PMC:PMC5122456] Related Antibodies: LS-B4372.
3
Extensive alternative splicing transitions during postnatal skeletal muscle development are required for calcium handling functions. Brinegar AE, Xia Z, Loehr JA, Li W, Rodney GG, Cooper TA. eLife. 2017 6: (WB; Human) [Full Text Article] [PubMed:28826478] [PMC:PMC5577920] Related Antibodies: LS-C30810.

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For RESEARCH USE ONLY. Intended for use by laboratory professionals. Not intended for human diagnostic or therapeutic purposes.

The data on this page has been compiled from LifeSpan internal sources, the National Center for Biotechnology Information (NCBI), and The Universal Protein Resource (UniProt).