Protein Domain : Calcium binding protein CcbP, beta-barrel domain IPR043067

Type	Homologous_superfamily
Description	CcbP is a Ca(2+) binding protein found in bacteria which is thought to bind Ca(2+) by protein surface charge. When bound to Ca(2+), the protein becomes more compact and the level of free calcium decreases. Within the bacteria, Ca(2+) has a role in the early stages of heterocyst differentiation. The free Ca(2+) concentration which is regulated by CcbP is critical for the differentiation process []. Calcium signalling is widespread in bacterial species, and prokaryotic cells like eukaryotes are equipped with all the elements to maintain Ca2+ homeostasis [].This superfamily represents a domain of 5 anti-parallel beta strands arranged into a beta barrel from the calcium binding protein CcbP. The 2nd and 3rd strand are linked by a short 3(10)-helix. The 4th and 5th strand are also linked by a short 3(10)-helix.
Short Name	CcbP_b-brl