Nucleotide binding domain serves as a built-in protein kinase that functions to phosphorylate the P domain.

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#Id: 4651

#Unit 13. Methods in Biology

If cells that have incorporated a high level of BrdU are exposed to light, they will photolyse; this has been used to selectively kill newly dividing cells.

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#Id: 450

#Unit 2. Cellular Organization

All four core histones show a similar type of structure in which three a-helices are connected by two loops. This highly conserved structure is called the histone fold.

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#Id: 7770

#Unit 2. Cellular Organization

The inner nuclear membrane contains proteins that act as binding sites for chromosomes and for the nuclear lamina.

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#Id: 3987

#Unit 7. System Physiology – Animal

Phase 0 (depolarization), fast sodium channels open. 

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#Id: 9994

#Unit 4. Cell Communication and Cell Signaling

The Wnt-Ca2+ pathway is initiated by Frizzled receptors activating a classical G protein-coupled signaling pathway.