The acrosomal membrane region that underlies the acrosomal vesicle and is located toward the sperm nucleus. This region is responsible for molecular interactions allowing the sperm to penetrate the zona pellucida and fuses with the egg plasma membrane.

The fusion of the plasma membrane of the sperm with the outer acrosomal membrane.

The binding of a protein or protein complex to the barbed (or plus) end of an actin filament, thus preventing the addition, exchange or removal of further actin subunits.

The proteolytic digestion of components in the acrosomal matrix that occurs as part of the acrosome reaction. The process can occur either in the cumulus oophorous facilitating the penetration of it by the sperm, or at the zona pellucida allowing the sperm to reach the plasma membrane of the egg where the inner acrosomal membrane of the sperm can interact with the egg plasma membrane.

The process whose specific outcome is the progression of an osteoblast over time, from its formation to the mature structure. Osteoblast development does not include the steps involved in committing a cranial neural crest cell or an osteoprogenitor cell to an osteoblast fate. An osteoblast is a cell that gives rise to bone.

The process whose specific outcome is the progression of the somitomeric trunk muscle over time, from its formation to the mature structure. The somitomeric trunk muscle is derived from somitomeric mesoderm. The muscle begins its development with the differentiation of the muscle cells and ends with the mature muscle. An example of this process is found in Mus musculus.

The process whose specific outcome is the progression of the extraocular skeletal muscle over time, from its formation to the mature structure. The extraocular muscle is derived from cranial mesoderm and controls eye movements. The muscle begins its development with the differentiation of the muscle cells and ends with the mature muscle. An example of this process is found in Mus musculus.

A process in which planktonically growing microorganisms aggregate and grow on solid substrates under the flow of a liquid and produce extracellular polymers that facilitate attachment and matrix formation, resulting in a change in the organisms' growth rate and gene transcription.

The invagination of the optic vesicle to form two-walled indentations, the optic cups, that will go on to form the retina. This process begins with the optic vesicle becoming a two-walled structure and its subsequent shape changes. It does not include the fate commitment of cells to become the pigmented retina and the neural retina. An example of this process is found in Mus musculus.

The developmental process, independent of morphogenetic (shape) change, that is required for a glandular epithelial cell to attain its fully functional state. A glandular epithelial cell is a columnar/cuboidal epithelial cell is a cell found in a two dimensional sheet with a free surface exposed to the lumen of a gland.

A process in which planktonically growing microorganisms grow at the surface of a liquid-air interface and produce extracellular polymers that facilitate matrix formation, resulting in a change in the organisms' growth rate and gene transcription.

A process in which microorganisms produce an extracellular matrix and form multicellular aggregates at an air-liquid interface.

The process in which nucleated precursor cells lose their nucleus.

Catalysis of the hydrolysis of terminal, non-reducing alpha-(1->3)-linked alpha-D-glucose residues with release of alpha-D-glucose.

The process in which nucleated precursor cells lose their nucleus as part of sieve element differentiation. The nuclear contents are released and degraded in the cytoplasm at the same time as other organelles are rearranged and the cytosol is degraded.

Binding to a Rho GDP-dissociation inhibitor protein.

Binding to a GDP-dissociation inhibitor protein.