An electron dense structure that is associated with meiotic chromosomes in pachytene during meiosis I.

A specialized region of connection between a cell and the extracellular matrix.

Point of contact between the basal surface of epithelial cells and the basal lamina. Morphologically resembles desmosomes; attached to intermediate filaments.

Button-like point of intercellular contact through which the intermediate filaments of adjacent cells are connected indirectly.

The dispersed less dense form of chromatin in the interphase nucleus. It exists in at least two forms, a some being in the form of transcriptionally active chromatin which is the least condensed, while the rest is inactive euchromatin which is more condensed than active chromatin but less condensed than heterochromatin.

The formation from simpler components of phosphocreatine, a phosphagen of creatine which is synthesized and broken down by creatine phosphokinase.

The lipid bilayer surrounding the mitochondrion and separating its contents from the cell cytoplasm.

nucleobase, nucleoside, nucleotide and nucleic acid transport

The directed movement of nucleobases, nucleosides, nucleotides and nucleic acids, into, out of, within or between cells.

The membrane on the outer surface of the mitochondrion, interfacing with the cell cytoplasm.

nucleobase, nucleoside, nucleotide and nucleic acid transporter activity

Enables the directed movement of nucleobases, nucleosides, nucleotides and nucleic acids, into, out of, within or between cells.

mitochondrial outer membrane translocase complex

A large complex of the mitochondrial outer membrane that mediates transport of proteins into all mitochondrial compartments.

The inner membrane of the mitochondria. It is highly folded to form cristae.

The larger of the two subunits of a ribosome. Two sites on the ribosomal large subunit are involved in translation, namely the aminoacyl site (A site) and peptidyl site (P site).

mitochondrial inner membrane presequence translocase complex

The protein transport machinery of the mitochondrial inner membrane that 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.