BP

GO:0000244

spliceosomal tri-snRNP complex assembly

The formation of a tri-snRNP complex containing U4 and U6 (or U4atac and U6atac) snRNAs and U5 snRNAs and associated proteins. This includes reannealing of U4 and U6 (or U4atac and U6atac) snRNAs released from previous rounds of splicing to reform the U4/U6 snRNP (or U4atac/U6atac snRNP) as well as the subsequent association of the U5 snRNP with the U4/U6 snRNP (or U4atac/U6atac snRNP) to form a tri-snRNP that is ready to reassemble into another spliceosome complex.

IDA

BP

GO:0000245

spliceosomal complex assembly

The aggregation, arrangement and bonding together of a spliceosomal complex, a ribonucleoprotein apparatus that catalyzes nuclear mRNA splicing via transesterification reactions.

IBA

BP

GO:0000387

spliceosomal snRNP assembly

The aggregation, arrangement and bonding together of one or more snRNA and multiple protein components to form a ribonucleoprotein complex that is involved in formation of the spliceosome.

IDA

BP

GO:0000398

mRNA splicing, via spliceosome

The joining together of exons from one or more primary transcripts of messenger RNA (mRNA) and the excision of intron sequences, via a spliceosomal mechanism, so that mRNA consisting only of the joined exons is produced.

IDA

BP

GO:0000902

cell morphogenesis

The developmental process in which the size or shape of a cell is generated and organized.

IEA

BP

GO:0006334

nucleosome assembly

The aggregation, arrangement and bonding together of a nucleosome, the beadlike structural units of eukaryotic chromatin composed of histones and DNA.

IDA

BP

GO:0010468

regulation of gene expression

Any process that modulates the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA (for protein-coding genes) and the translation of that mRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.

IDA

BP

GO:0048872

homeostasis of number of cells

Any biological process involved in the maintenance of the steady-state number of cells within a population of cells.

IEA

BP

GO:0071425

hematopoietic stem cell proliferation

The expansion of a hematopoietic stem cell population by cell division. A hematopoietic stem cell is a stem cell from which all cells of the lymphoid and myeloid lineages develop.

IEA

BP

GO:1903586

positive regulation of histone deubiquitination

Any process that activates or increases the frequency, rate or extent of histone deubiquitination.

IDA

CC

GO:0005634

nucleus

A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

IDA

CC

GO:0005654

nucleoplasm

That part of the nuclear content other than the chromosomes or the nucleolus.

IDA

CC

GO:0005691

U6atac snRNP

A ribonucleoprotein complex that contains small nuclear RNA U6atac.

IDA

CC

GO:0005737

cytoplasm

All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

IEA

CC

GO:0015030

Cajal body

A class of nuclear body, first seen after silver staining by Ramon y Cajal in 1903, enriched in small nuclear ribonucleoproteins, and certain general RNA polymerase II transcription factors; ultrastructurally, they appear as a tangle of coiled, electron-dense threads roughly 0.5 micrometers in diameter; involved in aspects of snRNP biogenesis; the protein coilin serves as a marker for Cajal bodies. Some argue that Cajal bodies are the sites for preassembly of transcriptosomes, unitary particles involved in transcription and processing of RNA.

IDA

CC

GO:0016607

nuclear speck

A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.

IEA

CC

GO:0071001

U4/U6 snRNP

A ribonucleoprotein complex that contains base-paired U4 and U6 small nuclear RNAs.

IDA

MF

GO:0000166

nucleotide binding

Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.

IEA

MF

GO:0005515

protein binding

Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).

IPI

MF

GO:0017070

U6 snRNA binding

Interacting selectively and non-covalently with the U6 small nuclear RNA (U6 snRNA).

IDA

MF

GO:0030621

U4 snRNA binding

Interacting selectively and non-covalently with the U4 small nuclear RNA (U4 snRNA).

IDA

MF

GO:0030624

U6atac snRNA binding

Interacting selectively and non-covalently with the U6atac small nuclear RNA (U6atac snRNA).

IDA

MF

GO:0042393

histone binding

Interacting selectively and non-covalently with a histone, any of a group of water-soluble proteins found in association with the DNA of plant and animal chromosomes. They are involved in the condensation and coiling of chromosomes during cell division and have also been implicated in nonspecific suppression of gene activity.

IDA

MF

GO:0044822

poly(A) RNA binding

Interacting non-covalently with a poly(A) RNA, a RNA molecule which has a tail of adenine bases.

IDA

MF

GO:1990381

ubiquitin-specific protease binding

Interacting selectively and non-covalently with a ubiquitin-specific protease.

IPI