Vatsvagiri vepaJohn Innes Center nevamwe vavo kuChinese Academy yeSainzi vakaona shanduko yemamolecular inotaridza kusiyanisa kwekukura kwemasero uye chimiro chenhengo dzezvirimwa. Phys.org portal.
Kukura regulator auxin inosimudzira kukura kwesero kuburikidza neprotein yepamusoro inonzi transmembrane kinase 1 (TMK1). Pamusoro pesero, puroteni iyi inogadzirisa sero madziro zvinhu zvinokurudzira kukura kwesero. Asi TMK1 inoratidzawo yakatarisana nekukura-inononoka mhedzisiro musero nucleus, kwainodzvanya kukura kwesero nekudzikira auxin-mediated gene expression.
Dr. Bengo Gu uye vaaishanda navo vakaratidza kuti TMK1 inoita sei mabasa aya anoita seanopesana munzvimbo dzakasiyana dzesero. Kucheneswa kweprotein yeTMK1 kunoitika pachisero chesero, chikamu cheprotein yakatsemuka inotamirwa kune nucleus yayo. Kunyangwe izvi zvakajairika, kuzivikanwa kwemapuroteni anobatanidzwa mu cleavage kwakambonetsa.
Mapuroteni anobatanidzwa inhengo dzeDA1 peptidase mhuri. Aya ma enzymes anoputsa mapuroteni akasiyana-siyana anobatanidzwa mukukura kwekuita uye anokurudzira kukura kwenhengo dzezvirimwa.
Iyo DA1 mhuri TMK1 cleavage demonstration inoratidza magadzirirwo avanoita kuyerera kweruzivo kubva pasero kumusoro kusvika kunucleus, kuumba hukuru hwesero uye kukura kwenhengo. Kutsunga kwemaitiro aya kunopa mupiro wakakosha pakunzwisisa kwemaitiro ekukura kwechirimwa.
Iri basa rinoratidza kuti DA1 mhuri peptidases inokanganisa hormonal signal transduction, iyo inonongedza kune yakajairwa nzira yekuchinjisa chiratidzo kubva kuplasma membrane kuenda kunucleus. Zvakawanikwa zvinogona kupa nzira yekuvandudza kumera kwembeu.