Structural highlights
Function
[SPTB2_HUMAN] Fodrin, which seems to be involved in secretion, interacts with calmodulin in a calcium-dependent manner and is thus candidate for the calcium-dependent movement of the cytoskeleton at the membrane.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Spectrins are tetrameric actin-cross-linking proteins that form an elastic network, termed the membrane skeleton, on the cytoplasmic surface of cellular membranes. At the plasma membrane, the membrane skeleton provides essential support, preventing loss of membrane material to environmental shear stresses. The skeleton also controls the location, abundance, and activity of membrane proteins that are critical to cell and tissue function. The ability of the skeleton to modulate membrane stability and function requires adaptor proteins that bind the skeleton to membranes. The principal adaptors are the ankyrin proteins, which bind to the beta-subunit of spectrin and to the cytoplasmic domains of numerous integral membrane proteins. Here, we present the crystal structure of the ankyrin-binding domain of human beta2-spectrin at 1.95 A resolution together with mutagenesis data identifying the binding surface for ankyrins on beta2-spectrin.
Localization and structure of the ankyrin-binding site on beta2-spectrin.,Davis L, Abdi K, Machius M, Brautigam C, Tomchick DR, Bennett V, Michaely P J Biol Chem. 2009 Mar 13;284(11):6982-7. Epub 2008 Dec 20. PMID:19098307[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Davis L, Abdi K, Machius M, Brautigam C, Tomchick DR, Bennett V, Michaely P. Localization and structure of the ankyrin-binding site on beta2-spectrin. J Biol Chem. 2009 Mar 13;284(11):6982-7. Epub 2008 Dec 20. PMID:19098307 doi:10.1074/jbc.M809245200
