Chitin, uas tshwm sim hauv cov xwm txheej raws li kev txiav txim siab macrofibrils, yog qhov tseem ceeb ntawm cov txheej txheem nyob rau hauv lub exoskeletons ntawm crustaceans, crabs thiab cws, nrog rau cov phab ntsa ntawm tes ntawm fungi.
chitin nyob qhov twg?
2.1.
Chitin yog ib qho dawb, tawv, tsis muaj zog, nitrogenous polysaccharide thiab thib ob feem ntau biopolymer (tom qab cellulose) uas pom muaj nyob hauv cov exoskeletons ntawm crabs, prawns, kab., thiab txawm nyob hauv cov phab ntsa ntawm cov kab mob fungi.
Cov cell yog chitin pom hauv dab tsi?
Chitin, ib qho β1-4-txuas homopolymer ntawm N-acetylglucosamine residues, yog ib qho tseem ceeb ntawm phab ntsa ntawm cov kab mob, muaj kwv yees li 10% ntawm cov phab ntsa ntawm tes.. Chitin kuj tseem muaj nyob hauv ntau yam kab mob uas tsis yog cov kab mob fungi, thiab tau kawm los ntawm ntau qhov kev xav nrog rau kev siv hauv kev lag luam.
tib neeg puas muaj chitin?
Tib neeg thiab lwm yam tsiaj muaj chitinase thiab chitinase-zoo li proteins uas tuaj yeem degrade chitin; lawv kuj muaj ob peb lub cev tiv thaiv kab mob uas tuaj yeem paub txog chitin thiab nws cov khoom degradation hauv cov kab mob uas cuam tshuam nrog cov qauv molecular, pib lub cev tiv thaiv kab mob.
chitin yog dab tsi thiab nws nyob qhov twg hauv fungi?
Chitin yog ib qho loj, cov qauv polysaccharide ua los ntawm cov chains ntawm cov piam thaj hloov. Chitin pom muaj nyob rau hauv lub exoskeletons ntawm kab, cell phab ntsa ntawm fungi, thiab tej yam nyuaj qauv nyob rau hauv invertebrates thiab ntses. Hais txog kev nplua nuj, chitin yog thib ob rau tsuas yog cellulose xwb.
