Video: Dab tsi yog polypeptide saw hauv cov plaub hau?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov plaub hau Nws yog ib qho kev sib tw, zoo li xov zoo li kev loj hlob los ntawm cov follicle hauv daim tawv nqaij ntawm cov tsiaj thiab muaj feem ntau ntawm cov proteins (88%) ntawm ib hom tawv fibrous hu ua Keratin. Keratin protein yog tsim los ntawm qhov peb hu ua " polypeptide chains ”. Ntau (poly) cov amino acids sib koom ua ke ua " polypeptide saw ”.
Tsis tas li ntawd, polypeptide chains yog dab tsi?
Polypeptide chains yog cov polymers ntawm cov amino acids koom ua ke nrog peptide bonds. Cov peptide bonds no tau tsim los ntawm kev sib xyaw ua ke ua ke thaum cov amino acids tau raug cim rau thaum txhais lus. Thaum nyob hauv polypeptide chains , amino acids paub tias yog cov seem.
Yuav ua li cas koj rhuav ib daim ntawv cog lus disulfide hauv koj cov plaub hau? Cov disulphide daim ntawv cog lus tsis tuaj yeem tawg sib nrug los ntawm cov tshuaj oxidizing, uas yog cov kua qaub, tab sis tuaj yeem tawg sib nrug los ntawm cov tshuaj muaj zog txo qis, uas yog cov hauv paus. Yog li ntawd, kev daws teeb meem Alkaline tau siv rau plaub hau rau tawg sib cais disulphide bonds . Cov plaub hau yog ces tuav ncaj thiab acidic daws yog siv rau nws.
Yog li ntawd, dab tsi yog ib daim ntawv cog lus disulfide hauv cov plaub hau?
Disulfide bonds yog tshuaj lom daim ntawv cog lus . Disulfide bonds txuas ua ke ob lub sulfur atoms txuas rau cysteine amino acids hauv cov saw hlau polypeptide. Tshuaj plaub hau relaxers thiab mus tas li tsis muaj tshuaj lom neeg hloov cov plaub hau disulfide daim ntawv cog lus . Disulfide bonds tsis tuaj yeem tawg los ntawm dej lossis cua sov.
Cov txheej txheem tshuaj plaub hau yog dab tsi?
Tag nrho cov tshuaj lom neeg muaj pes tsawg leeg yog 45 % carbon, 28 % oxygen, 15 % nitrogen, 7 % hydrogen thiab 5 % sulfur. Cov plaub hau ncej yog qhov tseem ceeb ntawm keratin. Cov plaub hau keratin yog qhov nyuaj, sib cog thiab muaj zog. Cov protein fibrous no tau maj mam tsim sab hauv hlwb los ntawm txheej txheej
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