Catalysis of the reaction: amino acid(out) + Na+(out) = amino acid(in) + Na+(in).

Combining with a leukotriene to initiate a change in cell activity. Leukotrienes are pharmacologically active substances with a set of three conjugated double bonds; some contain a peptide moiety based on cysteine.

Catalysis of the stereospecific transfer of basic amino acids, amino acids with a pH greater than 7, across a biological membrane.

Combining with melanocortin to initiate a change in cell activity.

Combining with adrenocorticotropin to initiate a change in cell activity.

The formation from simpler components of phosphatidylinositol, any glycophospholipid with its sn-glycerol 3-phosphate residue is esterified to the 1-hydroxyl group of 1D-myo-inositol.

The chemical reactions involving glycerol ethers, any anhydride formed between two organic hydroxy compounds, one of which is glycerol.

The formation from simpler components of platelet activating factor, 1-O-alkyl-2-acetyl-sn-glycerol 3-phosphocholine, where alkyl = hexadecyl or octadecyl. Platelet activating factor is an inflammatory mediator released from a variety of cells in response to various stimuli.

The chemical reactions involving glycolipids, compounds containing (usually) 1-4 linked monosaccharide residues joined by a glycosyl linkage to a lipid.

A change in state or activity of a cell or organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of the perception of an external stimulus.

negative regulation of transcriptional preinitiation complex formation

negative regulation of transcriptional pre-initiation complex formation

Any process that stops, prevents or reduces the rate of transcriptional preinitiation complex formation.

The chemical reactions involving sphingolipids, any of a class of lipids containing the long-chain amine diol sphingosine or a closely related base (a sphingoid).

The action of a molecule that contributes to the structural integrity of the nuclear pore complex.

A change in state or activity of an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of the perception of a biotic stimulus.