All terms in GO

Label Id Description
alpha-heterochromatin GO_0005723 [A small, compact region of heterochromatin located in the middle of the polytene chromosome chromocenter, which undergoes little or no replication during polytenization.]
obsolete nuclear telomeric heterochromatin GO_0005724 [OBSOLETE. Heterochromatic regions of the chromosome found at the telomeres of a chromosome in the nucleus.]
intercalary heterochromatin GO_0005725 [Any of the regions of heterochromatin that form a reproducible set of dense bands scattered along the euchromatic arms in polytene chromosomes.]
perichromatin fibrils GO_0005726 [Structures of variable diameter visible in the nucleoplasm by electron microscopy, mainly observed near the border of condensed chromatin. The fibrils are enriched in RNA, and are believed to be sites of pre-mRNA splicing and polyadenylylation representing the in situ form of nascent transcripts.]
extrachromosomal circular DNA GO_0005727 [Circular DNA structures that are not part of a chromosome.]
extrachromosomal rDNA circle GO_0005728 [Circular DNA molecules encoding ribosomal RNA that are replicated independently of chromosomal replication. These molecules originate in the chromosome but are excised and circularized, often by intramolecular homologous recombination between direct tandem repeats.]
2-micrometer circle DNA GO_0005729 [A plasmid commonly found in Saccharomyces, inherited in a non-Mendelian manner and often present in 100-400 copies.]
nucleolus GO_0005730 [A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.]
nucleolus organizer region GO_0005731 [A region of a chromosome where nucleoli form during interphase, and where genes encoding the largest rRNA precursor transcript are tandemly arrayed.]
obsolete small nucleolar RNA GO_0005733 [OBSOLETE. (Was not defined before being made obsolete).]
obsolete box C + D snoRNP protein GO_0005734 [OBSOLETE. (Was not defined before being made obsolete).]
obsolete box H + ACA snoRNP protein GO_0005735 [OBSOLETE. (Was not defined before being made obsolete).]
RNA polymerase I complex GO_0005736 [RNA polymerase I, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces rRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerase III and others of which are also found in RNA polymerases II and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template.]
mitochondrion GO_0005739 [A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.]
mitochondrial envelope GO_0005740 [The double lipid bilayer enclosing the mitochondrion and separating its contents from the cell cytoplasm; includes the intermembrane space.]
mitochondrial outer membrane GO_0005741 [The outer, i.e. cytoplasm-facing, lipid bilayer of the mitochondrial envelope.]
mitochondrial membrane GO_0031966 [Either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope.]
mitochondrial inner membrane GO_0005743 [The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.]
TIM23 mitochondrial import inner membrane translocase complex GO_0005744 [The protein transport machinery of the mitochondrial inner membrane that typically transports proteins that possess a matrix-targeting N-terminal presequence. The TIM23 complex contains three essential Tim proteins: Tim17 and Tim23 are thought to build a preprotein translocation channel while Tim44 interacts transiently with the matrix heat-shock protein Hsp70 to form an ATP-driven import motor.]
m-AAA complex GO_0005745 [Protease complex of the mitochondrial inner membrane that is involved in mitochondrial protein turnover and in processing of proteins imported into mitochondria.]