Taw qhia txog Hom II Collagen

Hom II collagen yog dab tsi?

Hom II collagen yog fibrillar protein ua los ntawm 3 ntev chains ntawm amino acids uas tsim ib tug nruj packed network ntawm fibrils thiab fibers. Nws yog lub hauv paus tseem ceeb ntawm pob txha mos hauv lub cev. Nws muaj qhov hnyav qhuav thiab collagens.

Hom II collagen yog dab tsi muab pob txha mos nws lub zog tensile thiab elasticity, yog li ua kom nws txhawb cov pob qij txha. Nws pab txoj kev khi nrog kev pab ntawm fibronectin thiab lwm yam collagens.

Dab tsi yog qhov txawv ntawm hom II thiab hom I collagen?

Nyob rau saum npoo lawv zoo nkaus li zoo ib yam, txhua tus yog triple helix piv txwv li ua los ntawm peb txoj hlua ntev ntawm cov amino acids. Txawm li cas los xij, ntawm qib molecular muaj qhov sib txawv tseem ceeb.

Hom I collagen: Ob ntawm peb txoj hlua yog tib yam.

Hom II collagen: Tag nrho peb chains yog tib yam.

Hom I Collagen muaj nyob hauv cov pob txha thiab tawv nqaij. Thaum hom II collagen tsuas pom muaj nyob rau hauv pob txha mos.

Cov txiaj ntsig zoo li cas hom II collagen ua si hauv lub cev?

Raws li peb tau pom, hom II collagen yog ib feem tseem ceeb ntawm cov pob txha mos. Yog li kom nkag siab tiag tiag lub luag haujlwm nws ua, ib tus yuav tsum saib cov haujlwm ntawm pob txha mos hauv lub cev.

Pob txha mos yog ib qho ruaj tab sis pliable connective cov ntaub so ntswg. Muaj ntau hom pob txha mos nyob rau hauv lub cev, txhua tus muaj cov haujlwm tshwj xeeb. Cov pob txha mos pom hauv cov pob qij txha muaj ntau yam haujlwm, xws li

- txuas cov pob txha

- tso cai rau cov ntaub so ntswg kom dais mechanical stress

- shock absorption

- tso cai rau cov pob txha txuas nrog txav mus yam tsis muaj kev sib txhuam

Cov pob txha mos yog tsim los ntawm chondrocytes uas yog cov hlwb tshwj xeeb uas tsim qhov hu ua 'extracellular matrix' suav nrog proteoglycan, elastin fibers thiab hom II collagen fibers.

Hom II collagen fibers yog cov khoom tseem ceeb collagenous pom hauv pob txha mos. Lawv ua lub luag haujlwm tseem ceeb heev. Lawv tsim ib lub network ntawm fibrils uas pab rau kev sib txuas ntawm proteoglycan thiab elastin fibers rau hauv ib qho tawv, tab sis hloov tau cov ntaub so ntswg.