What's the difference between sericin and silk?

Sericin


Definition:

  • (n.) A gelatinous nitrogenous material extracted from crude silk and other similar fiber by boiling water; -- called also silk gelatin.

Example Sentences:

  • (1) The onset of the symptoms, with regard to the various stages in the processing of silk, leads one to assume that the allergen involved is sericin.
  • (2) The sericin gene required more supercoiling for full transcription, whereas no preference for supercoiling was seen with the transcription of hsp70.
  • (3) Three protein binding sites have been identified in the upstream region of the sericin-1 gene.
  • (4) The 5' part of one sericin gene had been cloned and described by Okamoto et al.
  • (5) The UPE of the sericin-1-encoding gene, which is specifically expressed in the middle silk gland, also stimulates Ad2 MLP transcription in a similar manner.
  • (6) An allatectomy performed on fourth instar larvae promoted production of these mRNAs, suggesting that the synthesis of sericin mRNA is regulated by the titer of juvenile hormone.
  • (7) Templates containing multimerized SA or SC sites at -39 of the sericin-1 gene promoter were tested in MSG nuclear extracts.
  • (8) This explains, at least partially, the diversity of the sericins found in the cocoon.
  • (9) Using nuclear extracts from Bombyx mori middle silk glands (MSG) where the sericin-1 (Ser-1) mRNA is produced specifically, we have studied the in vitro transcription of the Ser-1 gene.
  • (10) When silk glands of the third instar larvae were transplanted into the abdomen of fifth instar larvae, substantial amounts of sericin mRNAs were induced in the transplant.
  • (11) The induced sericin gene activity was suppressed upon re-transplantation into the abdomen of fourth instar larvae and induced again when the second hosts grew up to fifth instar larvae.
  • (12) The sericin gene transcription is mostly restricted to the posterior region of the middle silk gland throughout the fifth larval instar.
  • (13) SGF-3 is present abundantly in the middle silk gland (MSG) where the sericin-1 gene is transcribed specifically but is also present in other cell types, though in a much less concentration.
  • (14) Since clusters of homeodomain binding sites can also be found in the promoters of other silk protein genes, the fibroin gene and the sericin-1 gene, these observations suggest a possible involvement of some homeobox genes in the regulation of a group of silk protein genes.
  • (15) In addition to quantitative adaptation of tRNAs to the composition of silk proteins (fibroin from the posterior silk gland, sericin from the middle part) and of iso-tRNAs from posterior silk gland to the major codons of fibroin mRNA, we also observe adaptation of tRNA from various tissues to the average amino acid content of proteins from fat body, gut, gonads and carcass of the silkworm.
  • (16) The components of the silk (fibroin and sericin) are also studied (molecular weight, composition).
  • (17) The middle silkgland cells also express another sericin gene (Ser2) which encodes two mRNA of 5.4 and 3.1 kb, also arising by differential splicing.
  • (18) Immunological investigations showed clearly that in this context sericin and also antigens from an insect of the genus anthrenus in the silk material are of allergenic importance.
  • (19) Promoters originating from insect genes, like the Bombyx sericin-1 gene, Drosophila hsp70 and Drosophila copia LTR, functioned as strong promoters in the embryos.
  • (20) The selective accumulation of tRNAs needed for decoding fibroin and sericin mRNAs which takes place during the Vth larval instar, cannot be explained by the occurrence of a preferential degradation of some tRNA species.

Silk


Definition:

  • (n.) The fine, soft thread produced by various species of caterpillars in forming the cocoons within which the worm is inclosed during the pupa state, especially that produced by the larvae of Bombyx mori.
  • (n.) Hence, thread spun, or cloth woven, from the above-named material.
  • (n.) That which resembles silk, as the filiform styles of the female flower of maize.

Example Sentences:

  • (1) To ascertain whether azo dyes are associated with risk of development of bladder tumors in workers who handpaint Yuzen-type silk kimonos in Kyoto, we investigated the disintegration of dyes to benzidine.
  • (2) Serial keratometry readings were obtained pre- and postoperative cataract extraction utilizing all silk closure.
  • (3) Here’s Marie-Josée Kravis, advisor to the New York Fed, accessorizing brilliantly with her snake-effect silk scarf off on a power walk with her billionaire financier husband Henry Kravis, head of predatory investment company KKR.
  • (4) The country’s other attractions include a burning pit at “the door to hell” in the Darvaza crater, and rarely seen stretches of the silk road, the region’s ancient trade route.
  • (5) The polylactic-polyglycolic acid suture is braided and dyed, and has handling characteristics similar to those of black silk.
  • (6) The radioallergosorbent inhibition test, however, suggested that there may be no cross-reactivity or, if any, only very low cross-reactivity between midge allergens and mite, house dust (HD), silk, shrimp, or mosquito allergens.
  • (7) But lest the duchess feel overlooked, the end section of the show featured long, pale-blue bias-cut crepe dresses with more of a charity gala feel; and knee-length silk crepe dresses with black grosgrain belts seemed princess friendly.
  • (8) A clinical survey in two silk filatures revealed that 36.2% of the persons engaged in the processing of natural silk were suffering from bronchial asthma, while 16.9% of the total subjects had asthma of occupational origin.
  • (9) It posted photos on its website of what it said was Thargyal's charred body covered in ceremonial yellow silk scarves and hundreds of people marching up a hill to a cremation site where his remains were burned.
  • (10) Silk Road is just one website; bitcoin is potentially the foundation for a whole new economic order.
  • (11) The presence of specific antibodies against extracts of silk has been shown by the direct RAST and confirmed by the indirect RAST.
  • (12) The skin stapler produced less inflammation and a better aesthetic result over time than the silk stitches.
  • (13) Transcription of the Bombyx mori fibroin gene in a posterior silk gland extract can be separated into three functional steps on the basis of sensitivity to Sarkosyl: 1) formation of an initiation complex, which is blocked by 0.025% Sarkosyl; 2) conversion of the initiation complex to an elongation complex, a step sensitive to 0.05% Sarkosyl; 3) the subsequent elongation of RNA chain which occurs in the presence of 0.05% Sarkosyl.
  • (14) High-waisted flared pleated silk trousers was the key shape, in colours Saint Laurent would have approved, such as like pumpkin orange, sea green and glowing fuchia.
  • (15) 37 Castle Street, Somerset, A5 1LN; 01278 732 266; janetphillips-weaving.co.uk East Assington Mill's rural skills courses range from cane-and-rush chair making to silk scarf dyeing– and some more unusual options, too.
  • (16) Thankfully, mazot guests can also use the lounge and dining room in the Chalet Les Mazots, a lovely wood-panelled home full of antique chairs, chests and cabinets, built by a family of silk manufacturers from Leon who chose the location for their farm for its south-facing views of Mont Blanc.
  • (17) The abdominal safety line, which is a size 1 silk passed through the eyes of the urethral splint (Foley catheter) and rolled up on gauze with some tension on the anterior abdominal wall has been used in three cases.
  • (18) Pretreatment which gave higher grafting onto silk did not always promote the bond strength to the dentin pretreated by the same pretreatments.
  • (19) Six monkeys had significant drops in alveolar bone mass 14 days after the the application of a silk ligature around the gingival margin of an adjacent tooth.
  • (20) Silk ligatures were tied around selected posterior teeth and replaced weekly for 4 weeks.

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