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SF3B1
Splicing factor 3B subunit 1 is a protein that in humans is encoded by the ''SF3B1'' gene. Function This gene encodes subunit 1 of the splicing factor 3b protein complex. Splicing factor 3b, together with splicing factor 3a and a 12S RNA unit, forms the U2 small nuclear ribonucleoproteins complex (U2 snRNP). The splicing factor 3b/3a complex binds pre-mRNA upstream of the intron's branch site in a sequence independent manner and may anchor the U2 snRNP to the pre-mRNA. Splicing factor 3b is also a component of the minor U12-type spliceosome. The carboxy-terminal two-thirds of subunit 1 have 22 non-identical, tandem HEAT repeats that form rod-like, helical structures. Alternative splicing results in multiple transcript variants encoding different isoforms. Interactions SF3B1 has been shown to interact with: * CDC5L, * DDX42, * PPP1R8, * SF3B2, * SF3B3, * SF3B14, Clinical relevance Mutations in this gene have been recurrently seen in cases of advanced chronic lymphocyti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SF3B14
Splicing factor 3B, 14 kDa subunit, also known as SF3B14, is a human gene. Function This gene encodes a 14 kDa protein subunit of the splicing factor 3b complex. Splicing factor 3b associates with both the U2 and U11/U12 small nuclear ribonucleoprotein complexes (U2 snRNP) of spliceosomes. This 14 kDa protein interacts directly with subunit 1 of the splicing factor 3b complex. This 14 kDa protein also interacts directly with the adenosine that carries out the first transesterification step of splicing at the pre-mRNA branch site. Interactions SF3B14 has been shown to interact with SF3B1 Splicing factor 3B subunit 1 is a protein that in humans is encoded by the ''SF3B1'' gene. Function This gene encodes subunit 1 of the splicing factor 3b protein complex. Splicing factor 3b, together with splicing factor 3a and a 12S RNA unit, .... References Further reading * * * * * * * * * * * {{Gene-2-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CDC5L
Cell division cycle 5-like protein is a protein that in humans is encoded by the ''CDC5L'' gene. Function The protein encoded by this gene shares a significant similarity with ''Schizosaccharomyces pombe'' cdc5 gene product, which is a cell cycle regulator important for G2/ M transition. This protein has been demonstrated to act as a positive regulator of cell cycle G2/M progression. It was also found to be an essential component of a non-snRNA spliceosome, which contains at least five additional protein factors and is required for the second catalytic step of pre-mRNA splicing. Interactions CDC5L has been shown to interact with: * ASF/SF2, * BZW1, * CWC15, * DNA-PKcs, * DYNC1H1, * GCN1L1, * HSPA8, * ILF2, * PLRG1, * PPM1D, * PPP1CA, * PRPF19, * RBMX and * RPL12, * RPL13, * RPS16, * RPS25, * SF3A1, * SF3B1, * SF3B2, * SF3B4, * SFPQ, * SFRS2, * SNRPA1, * SNRPD3, * SRRM1, * Small nuclear ribonucleoprotein D1, * Small nuclear ribonucleoprotein D2, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DDX42
ATP-dependent RNA helicase DDX42 is an enzyme that in humans is encoded by the ''DDX42'' gene. Function This gene encodes a member of the Asp-Glu-Ala-Asp (DEAD) box protein family. Members of this protein family are putative RNA helicases, and are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. Two transcript variants encoding the same protein have been identified for this gene. Interactions DDX42 has been shown to interact with SF3B1. Model organisms Model organisms have been used in the study of DDX42 function. A conditional knockout mouse line called ''Ddx42tm1b(EUCOMM)Wtsi'' was generated at the Wellcome Trust Sanger Institute. Male and female animals underwent a standardized phenotypic screen In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PPP1R8
Nuclear inhibitor of protein phosphatase 1 is an enzyme that in humans is encoded by the ''PPP1R8'' gene. This gene, through alternative splicing, encodes three different isoforms. Two of the protein isoforms encoded by this gene are specific inhibitors of type 1 serine/threonine protein phosphatases and can bind but not cleave RNA. The third protein isoform lacks the phosphatase inhibitory function but is a single-strand endoribonuclease comparable to RNase E of E. coli. This isoform requires magnesium for its function and cleaves specific sites in A+U-rich regions of RNA. Interactions PPP1R8 has been shown to interact with PPP1CA, Histone deacetylase 2, SF3B1 EED and the EZH2 domain of PRC2 PRC2 (polycomb repressive complex 2) is one of the two classes of polycomb-group proteins or (PcG). The other component of this group of proteins is PRC1 (Polycomb Repressive Complex 1). This complex has histone methyltransferase activity and pr .... References Further reading * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SF3B2
Splicing factor 3B subunit 2 is a protein that in humans is encoded by the ''SF3B2'' gene. Function This gene encodes subunit 2 of the splicing factor 3b protein complex. Splicing factor 3b, together with splicing factor 3a and a 12S RNA unit, forms the U2 small nuclear ribonucleoproteins complex (U2 snRNP). The splicing factor 3b/3a complex binds pre-mRNA upstream of the intron's branch site in a sequence-independent manner and may anchor the U2 snRNP to the pre-mRNA. Splicing factor 3b is also a component of the minor U12-type spliceosome. Subunit 2 associates with pre-mRNA upstream of the branch site at the anchoring site. Subunit 2 also interacts directly with subunit 4 of the splicing factor 3b complex. Subunit 2 is a highly hydrophilic protein with a proline-rich N-terminus and a glutamate-rich stretch in the C-terminus. Interactions SF3B2 has been shown to interact with SF3B4, RBM7, SF3B1 and CDC5L Cell division cycle 5-like protein is a protein that in humans is en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SF3B3
Splicing factor 3B subunit 3 is a protein that in humans is encoded by the ''SF3B3'' gene. This gene encodes subunit 3 of the splicing factor 3b protein complex. Splicing factor 3b, together with splicing factor 3a and a 12S RNA unit, forms the U2 small nuclear ribonucleoproteins complex (U2 snRNP). The splicing factor 3b/3a complex binds pre-mRNA upstream of the intron's branch site in a sequence independent manner and may anchor the U2 snRNP to the pre-mRNA. Splicing factor 3b is also a component of the minor U12-type spliceosome. Subunit 3 has also been identified as a component of the STAGA (SPT3-TAF(II)31-GCN5L acetylase) transcription coactivator-HAT (histone acetyltransferase) complex, and the TFTC (TATA-binding-protein-free TAF(II)-containing complex). These complexes may function in chromatin modification, transcription, splicing, and DNA repair. Interactions SF3B3 has been shown to interact with SF3B1, Transcription initiation protein SPT3 homolog and TAF9 TAF9 RNA pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein
Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific 3D structure that determines its activity. A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide. Short polypeptides, containing less than 20–30 residues, are rarely considered to be proteins and are commonly called peptides. The individual amino acid residues are bonded together by peptide bonds and adjacent amino acid residues. The sequence of amino acid residue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protein-coding genes and noncoding genes. During gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be the intermediate template for a protein that performs a function. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. These genes make up different DNA sequences called genotypes. Genotypes along with environmental and developmental factors determine what the phenotypes will be. Most biological traits are under the influence of polygenes (many different genes) as well as gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HEAT Repeat
A HEAT repeat is a protein tandem repeat structural motif composed of two alpha helices linked by a short loop. HEAT repeats can form alpha solenoids, a type of solenoid protein domain found in a number of cytoplasmic proteins. The name "HEAT" is an acronym for four proteins in which this repeat structure is found: Huntingtin, elongation factor 3 (EF3), protein phosphatase 2A (PP2A), and the yeast kinase TOR1. HEAT repeats form extended superhelical structures which are often involved in intracellular transport; they are structurally related to armadillo repeats. The nuclear transport protein importin beta contains 19 HEAT repeats. Various HEAT repeat proteins and their structures Representative examples of HEAT repeat proteins include importin β (also known as karyopherin β) family, regulatory subunits of condensin and cohesin, separase, PIKKs (phosphatidylinositol 3-kinase-related protein kinases) such as ATM (Ataxia telangiectasia mutated) and ATR (Ataxia telangiectasia and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
