Abstract:
:In this paper we describe the peculiar structures and preferential codon usage found in wild silkworm fibroin genes. We determined a 1350 bp nucleotide sequence from the Chinese oak silkworm, Antheraea pernyi. The deduced amino acid sequence was partitioned into thirteen polyalanine-containing repetitive motifs, which was one of the characteristics of Antheraea fibroins. Eleven of these arrays can be classified into two types of motifs depending on difference in amino acid sequences following polyalanine. Repetitive motifs structurally similar to those of A. pernyi were detected in a homologue of the Japanese oak silkworm, Antheraea yamamai. The most remarkable feature of this study was preferential codon usage, especially seen in alanine synonymous codons within both homologues of Antheraea: isocodon GCA most frequently occurred in alanine isocodons. In contrast, GCU isocodon was the most abundant in Bombyx mori fibroin heavy chain that lacks polyalanine arrays. This result strongly suggests different modes of selective constraint between the two types of fibroin gene. The similar finding that GCA isocodon was most frequent in two dragline silk sequences of the spider, Nephila clavipes, is consistent with our results because of the repetitive polyalanine-containing arrays seen in spider dragline silk.
journal_name
Insect Mol Bioljournal_title
Insect molecular biologyauthors
Yukuhiro K,Kanda T,Tamura Tdoi
10.1046/j.1365-2583.1997.00161.xsubject
Has Abstractpub_date
1997-02-01 00:00:00pages
89-95issue
1eissn
0962-1075issn
1365-2583journal_volume
6pub_type
杂志文章abstract::cDNAs of Anopheles gambiae Defensin 2 (AgDef2), Defensin 3 (AgDef3) and Defensin 4 (AgDef4), identified in the genome sequence, have been characterized and their expression profiles investigated. In contrast to both typical defensins and insect antimicrobial peptides generally, the newly identified defensins were not ...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2008.00786.x
更新日期:2008-04-01 00:00:00
abstract::To begin to explore the molecular dynamics of rickettsial tick interaction, subtractive hybridization was used to screen mRNAs in Rickettsia montanensis-infected and uninfected Dermacentor variabilis. We isolated 30 cDNA fragments, 22 of which were up-regulated and eight were down-regulated in response to rickettsial ...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.2003.00400.x
更新日期:2003-04-01 00:00:00
abstract::Lucilia sericata maggots are used world-wide in biosurgery for the medical treatment of nonhealing wounds because they ingest necrotic tissues and significantly promote healing. To gain further insight into interdependencies between ecological adaptation and molecular evolution of innate immunity in Diptera, we used t...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2008.00856.x
更新日期:2009-02-01 00:00:00
abstract::The Asian rice gall midge, Orseolia oryzae, is a fast evolving, damaging pest of rice. Understanding the underlying molecular mechanism of interaction between the gall midge and rice will help in devising strategies to control and manage the pest. The present study aims to identify rice-responsive genes in the gall mi...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2011.01085.x
更新日期:2011-10-01 00:00:00
abstract::We exposed adult male Drosophila melanogaster to cold, desiccation or starvation, and examined expression of several genes during exposure and recovery. Frost was expressed during recovery from cold, and was up-regulated during desiccation. Desiccation and starvation (but not cold) elicited increased expression of the...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2007.00739.x
更新日期:2007-08-01 00:00:00
abstract::We identified two different groups of piggyBac-like elements (PLE) in the tobacco budworm, Heliothis virescens, and named them HvPLE1 and HvPLE2. An intact copy of HvPLE1 revealed the characteristics of PLE: inverted terminal repeats, inverted subterminal repeats, and an open reading frame encoding transposase, wherea...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2006.00653.x
更新日期:2006-08-01 00:00:00
abstract::Target of rapamycin (TOR), a member of the phosphatidylinositol kinase-related kinase family, plays a critical role in the regulation of growth, metabolism, development and survival, at both the cellular and the organismal levels. Two paralogous Tor genes, BmTor1 and BmTor2, were identified as a pair of inverted repea...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2010.01026.x
更新日期:2010-12-01 00:00:00
abstract::The western corn rootworm (WCR), a major pest of maize, is notorious for rapidly adapting biochemically, behaviourally and developmentally to a variety of control methods. Despite much effort, the genetic basis of WCR adaptation remains a mystery. Since transformation-based applications such as transposon tagging and ...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12305
更新日期:2017-08-01 00:00:00
abstract::The insertion of exogenous genetic cargo into insects using transposable elements is a powerful research tool with potential applications in meeting food security and public health challenges facing humanity. piggyBac is the transposable element most commonly utilized for insect germline transformation. The described ...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12220
更新日期:2016-06-01 00:00:00
abstract::Small RNA regulatory pathways are used to control the activity of transposons, regulate gene expression and resist infecting viruses. We examined the biogenesis of mRNA-derived endogenous short-interfering RNAs (endo-siRNAs) in the disease vector mosquito Aedes aegypti. Under standard conditions, mRNA-derived endo-siR...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2012.01141.x
更新日期:2012-06-01 00:00:00
abstract::HindIII restriction digests of the rDNA repeat unit of the German cockroach, Blattella germanica, reveal significant intraspecies sequence polymorphism. This variability is probably caused by structural differences within the nontranscribed spacer regions (NTS) of the ribosomal repeat unit. HindIII rDNA fragment polym...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.2000.00175.x
更新日期:2000-04-01 00:00:00
abstract::The responsiveness of several nuclear transcription factor genes to 20-hydroxyecdysone (20E) was characterized in an embryonic cell line, GV1, from Manduca sexta. The mRNA for the Manduca ecdysone receptor (MsEcR) was present in the GV1 cells and transiently increased 2.3-fold by 5 h after the addition of 2 micrograms...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.1997.00151.x
更新日期:1997-02-01 00:00:00
abstract::The bacterium Bacillus thuringiensis synthesizes toxins (delta-endotoxins) that are highly specific for insects. Once ingested, the activated form of the toxin binds to a specific receptor(s) located on the midgut epithelial cells, inserts into the membrane causing the formation of leakage pores and eventual death of ...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.2002.00373.x
更新日期:2002-12-01 00:00:00
abstract::Little is known about when, how or even if the wing development gene network elucidated in Drosophila is deployed in direct-developing insects. Here we identify the wing development genes (as determined in Drosophila) of the pea aphid (Acyrthosiphon pisum), which produces winged or unwinged adults in response to envir...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2009.00935.x
更新日期:2010-03-01 00:00:00
abstract::The sulfakinins are multifunctional insect neuropeptides displaying sequence similarities with the gastrin/ cholecystokinin (CCK) peptide family. In vertebrates, the peptides gastrin and CCK are involved in the regulation of digestion and food-intake. In this study sulfakinin cDNA was cloned and sequenced from the Med...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2007.00737.x
更新日期:2007-08-01 00:00:00
abstract::RNA interference (RNAi) refers to the process of post-transcriptional silencing of cellular mRNA by the application of double-stranded RNA (dsRNA). RNAi strategies have been widely employed to regulate gene expression in plants and animals including insects. With the availability of the full genome sequences of major ...
journal_title:Insect molecular biology
pub_type: 杂志文章,评审
doi:10.1111/imb.12282
更新日期:2017-04-01 00:00:00
abstract::Insects and other arthropods have an effective innate immune system that can clear infections with bacteria and other microorganisms. Despite this ability, one group of bacteria, the spiroplasmas, survive unharmed within the haemolymph of a wide range of arthropod hosts. We investigated the interaction between one mem...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.2003.00380.x
更新日期:2003-02-01 00:00:00
abstract::Two genes encoding sterol carrier protein-2 like proteins are identified from fourth instar cDNAs of the yellow fever mosquito, Aedes aegypti. The predicted AeSCP-2like1 (AeSCP-2L1) and AeSCP-2like2 (AeSCP-2L2) proteins are small, acidic and lacking the peroxisomal targeting sequence at the C-termini. Purified recombi...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2007.00729.x
更新日期:2007-06-01 00:00:00
abstract::Two piggyBac-like elements (PLEs) were identified in the cotton bollworm, Helicoverpa armigera, and were designated as HaPLE1 and HaPLE2. HaPLE1 is flanked by 16 bp inverted terminal repeats (ITRs) and the duplicated TTAA tetranucleotide, and contains an open reading frame (ORF) of 1794 bp with the presumed DDD domain...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2008.00780.x
更新日期:2008-02-01 00:00:00
abstract::Resistance to permethrin in an East African population of the major malaria vector, Anopheles gambiae is multifactorial. A mutated sodium channel allele and enhanced insecticide metabolism contribute to the resistance phenotype. We used microsatellite markers to scan the genome for quantitative trait loci (QTL) associ...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.0962-1075.2004.00495.x
更新日期:2004-08-01 00:00:00
abstract::A large and diverse family of serine protease genes was identified in first-instar larval cDNA of the sheep blowfly (Lucilia cuprina). This complex repertoire of genes was identified via a PCR approach using highly degenerate primers based on structurally conserved regions which surround the active site His and Ser re...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.1994.tb00157.x
更新日期:1994-05-01 00:00:00
abstract::Representatives of five distinct types of transposable elements of the mariner family were detected in the genomes of the Queensland fruit fly Bactrocera tryoni and its sibling species Bactrocera neohumeralis by phylogenetic analysis of transposase gene fragments. Three mariner types were also found in an additional t...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.0962-1075.2001.00275.x
更新日期:2001-08-01 00:00:00
abstract::Adaptive polymorphism may be common in immune system genes as co-evolutionary interactions foster diversity; either through ongoing positive selection (arms races), or balancing selection. DNA sequence diversity in two putative immune system genes was examined in species of the genus Anopheles and from Aedes aegypti. ...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2005.00588.x
更新日期:2005-12-01 00:00:00
abstract::In a recent study Drosophila larvae were injected with bacterial lipopolysaccharide (LPS) suspended in 1% ethanol and differentially induced protein fractions were identified. The levels of several proteins, including alcohol dehydrogenase (ADH), increased in LPS-treated flies and were labelled as immune response prot...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2004.00543.x
更新日期:2005-04-01 00:00:00
abstract::The honey bee (Apis mellifera L.) has developed into an important ethological model organism for social behaviour and behavioural plasticity. Bees perform a complex age-dependent division of labour with the most pronounced behavioural differences occurring between in-hive bees and foragers. Whereas nurse bees, for exa...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12130
更新日期:2014-12-01 00:00:00
abstract::A birth-and-death evolutionary model for odorant receptor gene repertoires presumes the creation of repertoires with the capacity for high-level diversity and rapid ligand specificity change. This changes the recognised odour space, directly affecting fitness-related behaviours and ultimately affecting adaptation to n...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12176
更新日期:2015-08-01 00:00:00
abstract::Cyclobutane pyrimidine dimer (CPD) photolyases repair ultraviolet (UV)-induced DNA damage using blue light. To get insight in the origin of baculovirus CPD photolyase (phr) genes, homologues in the lepidopteran insects Chrysodeixis chalcites, Spodoptera exigua and Trichoplusia ni were identified and characterized. Lep...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2011.01076.x
更新日期:2011-08-01 00:00:00
abstract::Injection of double-stranded RNA (dsRNA) corresponding to the silkworm white gene (Bmwh3) into preblastoderm eggs of the wild-type silkworm induced phenotypes similar to those observed with mutants of the white egg 3 locus (10-19.6). The induced phenotypes were characterized by the presence of white eggs and transluce...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1046/j.1365-2583.2002.00328.x
更新日期:2002-06-01 00:00:00
abstract::Lipids of the insect cuticle have important roles in resistance against the arid environment and invasion of foreign substances. Fatty acid synthase (FAS) is an important enzyme of the insect lipid synthesis pathway. In the present study, we identified three FAS genes from transcriptome data of the migratory locust, L...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/imb.12665
更新日期:2020-12-01 00:00:00
abstract::The full-length Hsp90 cDNA in Delia antiqua was cloned and sequenced. The deduced polypeptide comprised 717 amino acid residues, with a molecular mass of 82 140 Da. Summer- and winter-diapauses both elevated HSP90 transcript levels in D. antiqua pupae. Levels gradually increased with time in summer diapausing pupae wh...
journal_title:Insect molecular biology
pub_type: 杂志文章
doi:10.1111/j.1365-2583.2005.00602.x
更新日期:2005-12-01 00:00:00