Qhov sib txawv tseem ceeb ntawm phab ntsa teichoic acid thiab lipoteichoic acid yog cov phab ntsa teichoic acid yog covalently txuas rau peptidoglycan thaum lipoteichoic acids yog anched rau cov kab mob membrane ntawm glycolipid.
Teichoic acids yog cell phab ntsa glycopolymers pom nyob rau hauv cov kab mob Gram-positive. Lawv muaj phosphodiester-txuas polyol rov ua haujlwm. Lawv feem ntau yog fibers ntawm glycerol phosphate los yog ribitol phosphate. Teichoic acids ua tiav ntau lub luag haujlwm suav nrog kev tswj hwm ntawm autolytic enzymes, kev tswj hwm ntawm divalent cations, txuas ntawm cov proteins saum npoo, lossis tiv thaiv cov kab mob molecules, thiab lwm yam. Teichoic acids yog cov tsis zoo them nyiaj polymers, thiab lawv txuas nrog carbohydrates los ntawm phosphodiester bonds. Phab ntsa teichoic acid thiab lipoteichoic acid yog ob lub cell phab ntsa teichoic acids pom nyob rau hauv cov kab mob Gram-zoo. Phab ntsa teichoic acids txuas nrog peptidoglycan thaum lipoteichoic acids yog nyob rau hauv cytoplasmic membrane los ntawm lipid thauj tog rau nkoj.
Phab ntsa Teichoic Acid yog dab tsi?
Phab ntsa teichoic acid yog ib hom teichoic acid uas yog covalently txuas rau peptidoglycan txheej ntawm Gram-zoo kab mob. Structurely, phab ntsa teichoic acid polymer muaj ob yam: ib tug disaccharide linkage unit thiab ib lub ntsiab saw polymer uas muaj li ntawm phosphodiester-txuas polyol rov ua dua units. Lawv feem ntau thauj tog rau nkoj nrog N-acetylmuramic acid lossis lub davhlau ya nyob twg D-alanine hauv tetrapeptide cross-linkage ntawm N-acetylmuramic acid units ntawm peptidoglycan txheej. Lawv yog cov feem ntau PG-txuas polymers pom nyob rau hauv ntau yam kab mob gram-zoo, tshwj xeeb tshaj yog nyob rau hauv B. subtilis thiab S.aureus.
Daim duab 01: Phab ntsa Teichoic Acid
Phab ntsa teichoic acids koom nrog ntau yam ntawm kev faib cell hauv cov kab mob gram-zoo. Lawv kuj yog ib qho tseem ceeb rau kev tswj cov cell zoo hauv cov kab mob zoo li tus pas nrig. Ntxiv mus, lawv yuav tsum tau rau beta-lactam kuj nyob rau hauv Methicillin-resistant Staphylococcus aureus. Tsis tas li ntawd, phab ntsa teichoic acids kho kom haum rau cov tshuaj tua kab mob cationic. Hauv kev kho mob, phab ntsa teichoic acids yog lub hom phiaj kom kov yeej cov kab mob resistant.
YLipoteichoic Acid yog dab tsi?
Lipoteichoic acids yog teichoic acids uas yog covalently anchored rau lipid hauv cytoplasmic membrane. Lawv yog hom thib ob ntawm teichoic acids pom nyob rau hauv gram-zoo kab mob cell phab ntsa. Lipoteichoic acid yog ib qho tseem ceeb ntawm cov phab ntsa ntawm tes.
Daim duab 02: Lipoteichoic Acid
A diacylglycerol moiety ua haujlwm ua cov plasma membrane thauj tog rau nkoj rau lipoteichoic acids. Raws li txoj cai, lipoteichoic acid txawv ntawm teichoic acid vim nws muaj polyglycerol phosphates. Lipoteichoic acid yog ib qho acidic polymer uas txhawb nqa qhov tsis zoo rau phab ntsa ntawm tes. Cov molecules no ua raws li receptor molecules rau qee qhov Gram-positive bacteriophage.
Dab tsi yog qhov zoo sib xws ntawm Phab Ntsa Teichoic Acid thiab Lipoteichoic Acid?
- Ob phab ntsa teichoic acids thiab lipoteichoic acid yog ob qho tseem ceeb ntawm cov phab ntsa ntawm tes ntawm cov kab mob gram-zoo.
- Ob leeg yog cell phab ntsa glycopolymers.
- Lawv muab kev txhawb nqa rau lub cell phab ntsa ntawm cov kab mob gram-zoo.
- Ntxiv mus, lawv muaj cov hlua ntev ntawm ribitol lossis glycerol
- Lawv tsis pom muaj kab mob gram-negative.
Qhov txawv ntawm Phab Ntsa Teichoic Acid thiab Lipoteichoic Acid yog dab tsi?
Phab ntsa teichoic acids yog ib hom teichoic acids uas yog covalently txuas rau peptidoglycan thaum lipoteichoic acids yog ib hom teichoic acids uas yog anchored rau cov kab mob membrane ntawm glycolipid. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm phab ntsa teichoic acid thiab lipoteichoic acid.
Hauv qab infographic tabulates qhov sib txawv ntawm phab ntsa teichoic acid thiab lipoteichoic acid.
Summary – Phab ntsa Teichoic Acid vs Lipoteichoic Acid
Teichoic acid yog lub cell phab ntsa glycopolymer pom nyob rau hauv cov kab mob gram-zoo. Lawv yog cov tseem ceeb hauv kev tswj cov qauv ntawm cov phab ntsa ntawm tes. Muaj ob hom teichoic acids: phab ntsa teichoic acids thiab lipoteichoic acids. Phab ntsa teichoic acids yog covalently txuas rau peptidoglycan. Lipoteichoic acids yog covalently txuas rau lipid hauv cell membrane. Phab ntsa teichoic acids yog ib qho tseem ceeb rau kev txiav txim siab ntawm tes, kev tswj ntawm cell division, pathogenesis, tshuaj tua kab mob thiab lwm yam tseem ceeb ntawm gram-zoo kab mob physiology. Lipoteichoic acids yog qhov tseem ceeb hauv kev txhawb nqa tsis zoo rau phab ntsa ntawm tes. Ntxiv mus, lawv ua raws li receptor molecules rau qee cov kab mob gram-zoo bacteriophages. Yog li, qhov no qhia txog qhov sib txawv ntawm phab ntsa teichoic acid thiab lipoteichoic acid.
