Cov qauv tertiary yuav muaj ib leeg polypeptide saw "qaum"nrog ib lossis ntau dua cov qauv protein, cov protein ntau. Amino acid side chains tuaj yeem cuam tshuam thiab sib txuas hauv ntau txoj hauv kev. Kev sib cuam tshuam thiab kev sib txuas ntawm cov saw hlau sab hauv ib qho protein txiav txim siab nws cov qauv tertiary.
Puas muaj peptide bonds hauv tertiary qauv?
Cov qauv tertiary ntawm cov protein yog hais txog tag nrho peb-dimensional kev npaj ntawm nws cov saw hlau polypeptide hauv qhov chaw. Nws feem ntau ruaj khov los ntawm sab nraum polar hydrophilic hydrogen thiab ionic bond kev sib cuam tshuam, thiab sab hauv hydrophobic kev sib cuam tshuam ntawm nonpolar amino acid sab chains (Fig.
theem twg ntawm cov qauv muaj peptide bonds?
Primary structure muaj cov amino acids koom nrog peptide bonds. Peptide bonds yog nruab nrab ntawm alpha-carboxyl ntawm ib qho amino acid, thiab alpha-amine ntawm cov amino acid tom ntej. Daim ntawv cog lus peptide yog ib qho piv txwv ntawm daim ntawv cog lus amide.
Peptide daim ntawv cog lus tsim dab tsi?
Peptide daim ntawv cog lus yog tsim los ntawm biochemical cov tshuaj tiv thaiv uas rho tawm cov dej molecule raws li nws koom nrog amino pawg ntawm ib qho amino acid rau pawg carboxyl ntawm cov amino acid nyob sib ze. Cov kab sib txuas ntawm cov amino acids hauv cov protein yog suav tias yog cov qauv ntawm cov protein.
Yuav ua li cas sib cog lus tshwm sim hauv tertiary qauv?
Disulfide bond Disulfide bonds yog covalent bonds ntawm ob cysteine residues uas nyuaj rau tawg. Vim tias cov ntawv cog lus no muaj kev ruaj ntseg, lawv ntseeg tau tias yog cov ntawv cog lus kawg tsim nyob rau hauv cov qauv tertiary thiab pab teeb tsa qhov kawg ntawm cov protein.
