Qhov txawv ntawm NAG thiab NAM yog tias N-acetylglucosamine (NAG) tsis muaj pentapeptide txuas rau nws thaum N-acetylmuramic acid (NAM) muaj pentapeptide txuas rau nws.
Peptidoglycan yog tshwj xeeb rau cov kab mob, thiab nws yog cov khoom uas muaj nyob rau hauv cov kab mob cell phab ntsa. Nyob rau hauv lub cell phab ntsa, muaj ib txheej ntawm peptidoglycan. Raws li cov thickness ntawm cov txheej no, cov kab mob sib txawv rau hauv ob pawg loj uas yog ib qho tseem ceeb hauv kev ua cov kab mob. Nyob rau hauv Grams zoo kab mob, muaj ib tug tuab peptidoglycan txheej thaum nyob rau hauv Grams negative bacteria, nyias peptidoglycan txheej yog tam sim no. Peptidoglycan yog ib qho polymer uas muaj suab thaj thiab amino acids. N-acetylglucosamine (NAG) thiab N-acetylmuramic acid (NAM) yog ob qho kev hloov cov amino qab zib uas muaj nyob rau hauv peptidoglycan txheej ntawm cov kab mob ntawm phab ntsa.
NAG yog dab tsi?
N-acetylglucosamine yog ib qho amino qab zib uas yog ib feem ntawm peptodoglycan txheej hauv cov kab mob. Nws yog derivative ntawm qabzib.
Figure 01: NAG
Nws nyob nruab nrab ntawm ob NAM molecules hauv oligopeptides ntawm peptidoglycan txheej. NAG muab cov qauv rau peptidoglycan txheej, yog li muab lub zog rau cov kab mob ntawm tes. Structurally NAG zoo ib yam li NAM. Txawm li cas los xij, NAG tsis muaj pentapeptide txuas rau nws.
NAM yog dab tsi?
NAM yog qhov thib ob ntawm peptidoglycan monomer ntawm cov kab mob. Nws yog ib qho ether ua los ntawm lactic acid thiab N-acetylglucosamine. NAM muaj pentapeptide txuas rau nws. Li no nws pab txhawb kev sib txuas ntawm oligopeptides ntawm peptidoglycan txheej.
Figure 02: NAM
Ntxiv mus, NAM nrhiav ntawm ob NAG molecules. Ob leeg NAM thiab NAG ua ke muab cov qauv lattice muaj zog rau peptidoglycan txheej.
NAG thiab NAM yog dab tsi?
- NAG thiab NAM yog cov suab thaj amino.
- Lawv muaj nyob rau hauv cov phab ntsa ntawm cov kab mob.
- NAG thiab NAM yog cov khoom ntawm peptidoglycan monomer.
- Ob leeg muaj lub nplhaib qauv.
- Ob leeg muab lub zog rau cov kab mob ntawm phab ntsa.
NAG thiab NAM sib txawv li cas?
NAG thiab NAM yog ob lub suab thaj amino uas muaj nyob hauv peptidoglycan txheej kab mob. NAG yog ib qho amide tsim los ntawm glucosamine thiab acetic acid. NAM yog ib qho ether ntawm lactic acid thiab N-acetylglucosamine. NAM molecule muaj cov saw peptide txuas rau nws uas ua rau kev sib txuas ntawm oligopeptides ntawm peptidoglycan txheej. Ntawm qhov tod tes, NAG tsis muaj peptide saw txuas rau nws. Hloov chaw, NAG nrhiav ntawm ob NAM molecules thiab muab cov qauv rau peptidoglycan txheej. Nov yog qhov txawv ntawm NAG thiab NAM
Summary – NAG vs NAM
NAG thiab NAM yog ob lub suab thaj amino uas yog cov khoom ntawm peptidoglycan monomer. NAM pab txhawb kev sib txuas ntawm peptide chains ntawm peptidoglycan txheej. NAG tseem muab kev txhawb nqa rau cov txheej txheem peptidoglycan. Ob leeg NAM thiab NAM ua ke ua ib txheej muaj zog uas tiv thaiv kab mob los ntawm ib puag ncig sab nraud. Qhov no yog qhov txawv ntawm NAG thiab NAM.
