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obsolete organic cation transmembrane transporter activity
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GO_0015101 |
[OBSOLETE. Enables the transfer of organic cations from one side of a membrane to the other. Organic cations are atoms or small molecules with a positive charge that contain carbon in covalent linkage.] |
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signal recognition particle, endoplasmic reticulum targeting
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GO_0005786 |
[A ribonucleoprotein particle of 325 kDa composed of a 7S (300 nucleotide) RNA molecule and a complex of six different polypeptides. This binds both to the N-terminal signal peptide for proteins destined for the endoplasmic reticulum as they emerge from the large ribosomal subunit and also to the ribosome. This binding arrests further translation thereby preventing the proteins from being released into the cytosol. The SRP-ribosome complex then diffuses to the endoplasmic reticulum where it is bound to the signal recognition particle receptor, which allows resumption of protein synthesis and facilitates the passage of the growing polypeptide chain through the translocon. Through a process involving GTP hydrolysis, the SRP-SRP receptor complex dissociates and SRP returns to the cytosol. Of the six polypeptides of SRP the 54 kDa subunit (SRP54) is the central player. It contains an N-terminal GTPase domain and a C-terminal domain that binds directly to the signal peptide and the SRP RNA. Examples of this component are found in Mus musculus, Saccharomyces cerevisiae and Arabidopsis thaliana.] |
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signal peptidase complex
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GO_0005787 |
[A protein complex that is located in the endoplasmic reticulum membrane and cleaves the signal sequence from precursor proteins following their transport out of the cytoplasmic space.] |
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germarium-derived female germ-line cyst formation
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GO_0030727 |
[Formation, in a germarium, of a group of interconnected cells derived from a single female gonial founder cell (a cystoblast). The germarium is the most anterior portion of an insect ovariole. An example of this process is found in Drosophila melanogaster.] |
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acetoacetate-CoA ligase activity
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GO_0030729 |
[Catalysis of the reaction: acetoacetate + ATP + CoA = acetoacetyl-CoA + AMP + diphosphate + H+.] |
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oocyte localization involved in germarium-derived egg chamber formation
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GO_0030720 |
[Directed movement of the oocyte, following its specification, from its original central position in the cyst to a posterior position relative to the nurse cells of the egg chamber, and its maintenance in this posterior location. This is the first sign of anterior-posterior asymmetry in the developing egg chamber.] |
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spectrosome organization
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GO_0030721 |
[A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the spectrosome, a germline specific spherical organelle that is the precursor to the fusome.] |
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GO_0030722
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GO_0030722 |
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ovarian fusome organization
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GO_0030723 |
[A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the fusome of ovarian cells, an organelle derived from the spectrosome. It anchors the mitotic spindle pole to provide orientation during cystoblast cell divisions.] |
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testicular fusome organization
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GO_0030724 |
[A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the fusome of testicular cells, an organelle derived from the spectrosome.] |
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germline ring canal formation
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GO_0030725 |
[Assembly of the cytoplasmic bridges between developing spermatogonial or oogonial cysts.] |
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intercellular bridge organization
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GO_0043063 |
[A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the intracellular bridge. An intracellular bridge is a direct link between the cytoplasms of sister cells that allows cells to communicate with one another.] |
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male germline ring canal formation
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GO_0030726 |
[Formation of the intercellular bridges that connect the germ-line cells of a male cyst.] |
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smooth endoplasmic reticulum
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GO_0005790 |
[The smooth endoplasmic reticulum (smooth ER or SER) has no ribosomes attached to it. The smooth ER is the recipient of the proteins synthesized in the rough ER. Those proteins to be exported are passed to the Golgi complex, the resident proteins are returned to the rough ER and the lysosomal proteins after phosphorylation of their mannose residues are passed to the lysosomes. Glycosylation of the glycoproteins also continues. The smooth ER is the site of synthesis of lipids, including the phospholipids. The membranes of the smooth ER also contain enzymes that catalyze a series of reactions to detoxify both lipid-soluble drugs and harmful products of metabolism. Large quantities of certain compounds such as phenobarbital cause an increase in the amount of the smooth ER.] |
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thiosulfate transmembrane transporter activity
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GO_0015117 |
[Enables the transfer of thiosulfate ions, HS2O3(1-), from one side of a membrane to the other.] |
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GO_0015118
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GO_0015118 |
|
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rough endoplasmic reticulum
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GO_0005791 |
[The rough (or granular) endoplasmic reticulum (ER) has ribosomes adhering to the outer surface; the ribosomes are the site of translation of the mRNA for those proteins which are either to be retained within the cisternae (ER-resident proteins), the proteins of the lysosomes, or the proteins destined for export from the cell. Glycoproteins undergo their initial glycosylation within the cisternae.] |
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obsolete microsome
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GO_0005792 |
[OBSOLETE. Any of the small, heterogeneous, artifactual, vesicular particles, 50-150 nm in diameter, that are formed when some eukaryotic cells are homogenized and that sediment on centrifugation at 100000 g.] |
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silicate transmembrane transporter activity
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GO_0015115 |
[Enables the transfer of silicates from one side of a membrane to the other. Silicates are the salts of silicic acids, and are usually composed of silicon and oxygen (Si[x]O[y]), one or more metals, and possibly hydrogen. Types of silicate include unisilicates, metasilicates and hydrous silicates.] |
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endoplasmic reticulum-Golgi intermediate compartment
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GO_0005793 |
[A complex system of membrane-bounded compartments located between endoplasmic reticulum (ER) and the Golgi complex, with a distinctive membrane protein composition; involved in ER-to-Golgi and Golgi-to-ER transport.] |