The binding proteins from the family of Ca2 + S100

Calcium ions, and calcium binding proteins play a role in many cellular processes. Among the proteins bind Ca 2 + ions, with the EF-hand motifs, is distinguished group of proteins called S100 family of proteins. Most S100 proteins have been discovered in the last decade and this family now has 20 proteins. These are proteins with similar primary structure as have 30? 60% amino acid sequence identity. Individual S100 proteins are present in certain cells and tissues, and their function is not fully understood.

CD34 antigen and CD34-positive cells

KHematopoetyczna stem cell gives rise to many types of blood cells and is one of the better -characterized stem cells in the human body. It is suggested that stem cells derived from bone marrow are capable of giving rise to multiple cell types , including neural cells , skeletal muscle , cardiac muscle , liver cells , intestinal epithelial , skin, lung and kidney . Most positive marker for human hematopoietic stem and progenitor cells is the CD34 antigen . Chemically, it is a sialomucin CD34 ? transmembrane glycoprotein.

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Andrzej Łukaszyk - przewodniczący, Zofia Bielańska-Osuchowska, Szczepan Biliński, Mieczysław Chorąży, Aleksander Koj, Włodzimierz Korochoda, Leszek Kuźnicki, Aleksandra Stojałowska, Lech Wojtczak

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