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Titolo:
INTERMEDIATE FILAMENT PROTEIN POLYMERIZATION - MOLECULAR ANALYSIS OF DROSOPHILA NUCLEAR LAMIN HEAD-TO-TAIL BINDING
Autore:
STUURMAN N; SASSE B; FISHER PA;
Indirizzi:
SUNY STONY BROOK,UNIV MED CTR,DEPT PHARMACOL SCI STONY BROOK NY 11794 UNIV BASEL,BIOZENTRUM,MAURICE E MULLER INST CH-4056 BASEL SWITZERLAND
Titolo Testata:
Journal of structural biology
fascicolo: 1, volume: 117, anno: 1996,
pagine: 1 - 15
SICI:
1047-8477(1996)117:1<1:IFPP-M>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ROD DOMAIN; EPIDERMOLYTIC HYPERKERATOSIS; CONSENSUS SEQUENCE; NETWORK FORMATION; 2-HYBRID SYSTEM; DNA-REPLICATION; CROSS-LINKING; MUTATIONS; GENES; VIMENTIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
N. Stuurman et al., "INTERMEDIATE FILAMENT PROTEIN POLYMERIZATION - MOLECULAR ANALYSIS OF DROSOPHILA NUCLEAR LAMIN HEAD-TO-TAIL BINDING", Journal of structural biology, 117(1), 1996, pp. 1-15

Abstract

Polymerization of intermediate filament proteins results from interactions among several distinct binding sites on the constituent proteins. Nuclear lamin head-to-tail polymers arise from one such interaction. We studied this binding using Drosophila lamin Dm(0)-derived fragments containing either the NH2-terminal or COOH-terminal binding site with a combination of co-immunoprecipitation, yeast two-hybrid, analytical ultracentrifugation, and electron microscopic assays. Fragment binding and full-length lamin head-to-tail polymerization were similar to each other in morphology, buffer requirements, and inhibition after phosphorylation with cdc2 kinase. Deletion analysis localized the bindingsites to the ends of the rod domain that are highly conserved among all intermediate filament proteins. Point mutants, defective in binding, were isolated. Two were identical to point mutations in specific human keratin genes known to affect keratin assembly and to cause geneticskin diseases. Results further indicate that the binding sites only function in specific sequence contexts and that binding can be modulated by elements outside the binding sites (like the cdc2 kinase phosphorylation site). Our data indicate that one type of interaction in intermediate filament protein polymerization is the longitudinal binding ofdimers via the conserved end segments of the coiled-coil rod domain. (C) 1996 Academic Press, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 11:54:07