Cation binding properties of calretinin, an EF-hand calcium-binding protein.

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Cation binding properties of calretinin, an EF-hand calcium-binding protein.

Calretinin (CR) is a neuronal EF-hand protein previously characterized as a calcium (micromolar affinity) binding protein. CR-containing neurons are spared in some neurodegenerative diseases, although it is as yet unconfirmed how CR plays an active role in this protection. Higher levels of some metal cations (e.g. copper and zinc) are associated with these diseases. At the same time, metals suc...

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EF-hand calcium-binding proteins.

The EF-hand motif is the most common calcium-binding motif found in proteins. Several high-resolution structures containing different metal ions bound to EF-hand sites have given new insight into the modulation of their binding affinities. Recently determined structures of members of several newly identified protein families that contain the EF-hand motif in some of their domains, as well as of...

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Molecular Tuning of an EF-Hand-like Calcium Binding Loop

Calcium binding and signaling orchestrate a wide variety of essential cellular functions, many of which employ the EF-hand Ca2+ binding motif. The ion binding parameters of this motif are controlled, in part, by the structure of its Ca2+ binding loop, termed the EF-loop. The EF-loops of different proteins are carefully specialized, or fine-tuned, to yield optimized Ca2+ binding parameters for t...

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Prediction of EF-hand calcium-binding proteins and analysis of bacterial EF-hand proteins.

The EF-hand protein with a helix-loop-helix Ca(2+) binding motif constitutes one of the largest protein families and is involved in numerous biological processes. To facilitate the understanding of the role of Ca(2+) in biological systems using genomic information, we report, herein, our improvement on the pattern search method for the identification of EF-hand and EF-like Ca(2+)-binding protei...

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Calcium-binding Protein Calretinin Immunoreactivity in the Dog Superior Colliculus

We studied calretinin-immunoreactive (IR) fibers and cells in the canine superior colliculus (SC) and studied the distribution and effect of enucleation on the distribution of this protein. Localization of calretinin was immunocytochemically observed. A dense plexus of anti--calretinin-IR fibers was found within the upper part of the superficial gray layer (SGL). Almost all of the labeled fiber...

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ژورنال

عنوان ژورنال: Acta Biochimica Polonica

سال: 2001

ISSN: 1734-154X,0001-527X

DOI: 10.18388/abp.2001_5117