The 'de novo' formation of an astral microtubule, in which tubulin heterodimers form metastable oligomeric aggregates, some of which go on to support formation of a complete microtubule.

The 'de novo' formation of a microtubule, mediated by the microtubule organizing center.

Binding to a potassium ion (K+).

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Na+(out) + inorganic phosphate(out) = Na+(in) + inorganic phosphate(in).

Enables the transfer of a inorganic phosphate from one side of a membrane to the other, up its concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction and is driven by a chemiosmotic source of energy. Secondary active transporters include symporters and antiporters.

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Na+(out) + phosphate(out) = Na+(in) + phosphate(in).

A protein complex that possesses glutamyl-tRNA(Gln) amidotransferase activity, and therefore creates Gln-tRNA by amidating Glu-tRNA; usually composed of 3 subunits: A, B, and C. Note that the C subunit may not be required in all organisms.

Binding to Tat, a viral transactivating regulatory protein from the human immunodeficiency virus, or the equivalent protein from another virus.

Enables the transfer of cystine from one side of a membrane to the other, up its concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction and is driven by a chemiosmotic source of energy. Secondary active transporters include symporters and antiporters.

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: cystine(out) + glutamate(in) = cystine(in) + glutamate(out).

Enables the transfer of L-glutamate from one side of a membrane to the other. L-glutamate is the anion of 2-aminopentanedioic acid.

Enables the transfer of peptide-acetyl-CoA from one side of a membrane to the other, up its concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction and is driven by a chemiosmotic source of energy. Secondary active transporters include symporters and antiporters.

Catalysis of the reaction: acetyl-CoA(out) + CoA(in) = acetyl-CoA(in) + CoA(out).

Enables the transfer of coenzyme A from one side of a membrane to the other. Coenzyme A, 3'-phosphoadenosine-(5')diphospho(4')pantatheine, is an acyl carrier in many acylation and acyl-transfer reactions in which the intermediate is a thiol ester.

Enables the transfer of acetyl-CoA from one side of a membrane to the other. Acetyl-CoA is a derivative of coenzyme A in which the sulfhydryl group is acetylated; it is a metabolite derived from several pathways (e.g. glycolysis, fatty acid oxidation, amino-acid catabolism) and is further metabolized by the tricarboxylic acid cycle. It is a key intermediate in lipid and terpenoid biosynthesis.

Enables the transfer of an oligopeptide or oligopeptides from one side of a membrane to the other, up the solute's concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction.

OBSOLETE. This term was not defined before being made obsolete.