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Titolo:
INTERACTION OF THE RECOMBINANT S100A1 PROTEIN WITH TWITCHIN KINASE, AND COMPARISON WITH OTHER CA2-BINDING PROTEINS()
Autore:
HEIERHORST J; MANN RJ; KEMP BE;
Indirizzi:
ST VINCENTS INST MED RES,41 VICTORIA PARADE FITZROY VIC 3065 AUSTRALIA
Titolo Testata:
European journal of biochemistry
fascicolo: 1, volume: 249, anno: 1997,
pagine: 127 - 133
SICI:
0014-2956(1997)249:1<127:IOTRSP>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
CALCIUM-BINDING; MOLLUSCAN TWITCHIN; CALMODULIN; DOMAIN; PURIFICATION; ACTIVATION; AFFINITY; MUSCLE; S-100; ZINC;
Keywords:
PROTEIN KINASE; TWITCHIN; TITIN; S100; CALMODULIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
J. Heierhorst et al., "INTERACTION OF THE RECOMBINANT S100A1 PROTEIN WITH TWITCHIN KINASE, AND COMPARISON WITH OTHER CA2-BINDING PROTEINS()", European journal of biochemistry, 249(1), 1997, pp. 127-133

Abstract

The giant myosin-associated twitchin kinase, a member of the Ca2+-regulated protein kinase superfamily, is activated by the EF-hand proteinS100A1 in a Ca2+-dependent and Zn2+-enhanced manner. We used recombinant S100A1 to further characterize the interaction between the two proteins. Zn2+ enhanced the binding of Ca2+/S100A1 to twitchin kinase fragments (K-d < 50 nM) in assays using a BIAcore biosensor by reducing the S100A1 off rate. Other Ca2+-binding proteins (S100A6, calmodulin, and the calmodulin-like domain of Ca2+-dependent protein kinase abound to the kinase but did not activate it. These results indicate that binding of Ca2+-binding proteins alone is insufficient to trigger the intramolecular rearrangement of kinase autoinhibitory contacts required for twitchin kinase activation that is specifically elicited by the S100A1 protein. Kinase fragments that contained only the autoinhibited catalytic sequence or an additional immunoglobulin-like domain had very similar properties, indicating that the tethered immunoglobulin-like domain does not modulate kinase regulation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 18:16:51