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Titolo:
PATTERNS AND CONFORMATIONS OF COMMONLY OCCURRING SUPERSECONDARY STRUCTURES (BASIC MOTIFS) IN PROTEIN DATA-BANK
Autore:
SUN ZR; JIANG B;
Indirizzi:
TSING HUA UNIV,DEPT BIOL SCI & BIOTECHNOL,STATE KEY LAB BIOMEMBRANE &MEMBRANE ENGN BEIJING 100084 PEOPLES R CHINA
Titolo Testata:
Journal of protein chemistry
fascicolo: 7, volume: 15, anno: 1996,
pagine: 675 - 690
SICI:
0277-8033(1996)15:7<675:PACOCO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACID SUBSTITUTION TABLES; HOMOLOGOUS PROTEINS; SECONDARY STRUCTURE; BETA-HAIRPINS; LOOP REGIONS; PREDICTION; DEFINITION; FEATURES; DESIGN; FOLDS;
Keywords:
PROTEIN SUPERSECONDARY STRUCTURE; SHORT CONNECTING PEPTIDES; BASIC MOTIFS; STRUCTURE MODELING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
Z.R. Sun e B. Jiang, "PATTERNS AND CONFORMATIONS OF COMMONLY OCCURRING SUPERSECONDARY STRUCTURES (BASIC MOTIFS) IN PROTEIN DATA-BANK", Journal of protein chemistry, 15(7), 1996, pp. 675-690

Abstract

Short peptides connecting alpha-helices and beta-strands have been analyzed in 240 proteins refined at resolutions of 0.25 nm or better. Connecting peptides of lengths between one and five residues have been classified as part of supersecondary motifs of four types: alpha alpha,alpha beta, beta alpha, and beta beta. Careful consideration has beengiven to the definition of secondary structures on the basis of hydrogen bonds and main-chain conformational angles. Using five classes of residue conformation-a, b, e, l, t-in the nonregular structure regionsof phi, psi space, 34 classes of supersecondary motifs occurring at least five times have been identified. Among these 34 classes, 11 classes that occur more than 25 times are commonly occurring supersecondarystructure motifs, The patterns and conformations of the 11 commonly occurring supersecondary structure motifs have been characterized, demonstrating that patterns and conformations adopted by supersecondary structure motifs are limited, The results have relevance to structure prediction, comparative modeling, and protein folding.

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Documento generato il 30/11/20 alle ore 16:15:11