The assembly of a filopodium, a very long microspike extended by the leading edge of a motile cell such as a crawling fibroblast or amoeba, or by the growth cone of a developing nerve cell axon.

Interacting selectively with hydroxyapatite, the calcium phosphate mineral of formula Ca10(PO4)6(OH)2 found both in rocks of nonorganic origin and as a component of bone and dentine.

Catalysis of the reaction: sarcosine + acceptor + H2O = glycine + formaldehyde + reduced acceptor.

The assembly and arrangement of the cytoplasm and its components.

Interacting selectively with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.

The continuous turnover of bone matrix and mineral that involves first, an increase in resorption (osteoclastic activity) and later, reactive bone formation (osteoblastic activity). The process of bone remodeling takes place in the adult skeleton at discrete foci. The process ensures the mechanical integrity of the skeleton throughout life and plays an important role in calcium homeostasis. An imbalance in the regulation of bone resorption and bone formation results in many of the metabolic bone diseases, such as osteoporosis.

Catalysis of the reaction: ATP + sphinganine = ADP + sphinganine 1-phosphate.

A voltage-gated proton channel; unique among ion channels with respect to their extremely high selectivity, marked temperature dependence, and unitary conductance, which is three orders of magnitude lower than that of most ion channels.

Catalysis of the reaction: SO3(2-) (sulfite) + O2 + H2O = SO4(2-) (sulfate) + H2O2.

Interacting selectively with troponin C, the calcium-binding subunit of the troponin complex.

Catalysis of the transfer of an amino group to an acceptor, usually a 2-oxo acid.

Penetrating at least one phospholipid bilayer of the Golgi complex membrane. Also refers to the state of being buried in the bilayer with no exposure outside the bilayer.

Catalysis of the reaction: RSO-R' + H2O = RSOOH + R'H. This reaction is the hydrolysis of any sulfuric ester bond, any ester formed from sulfuric acid, O=SO(OH)2.