Imisemburo ya hormone abcisic aside (ABA) nigenzura rikomeye muguhuza ibimera abiotic.Igenzura rya poroteyine ya PP2C nka ABI1 ni ihuriro rikuru rya transduction ya ABA.Mubihe bisanzwe, ABI1 ihuza protein kinase SnRK2s kandi ikabuza ibikorwa byayo.ABA ihujwe na poroteyine ya reseptor PYR1 / PYLs irushanwa na SnRK2s mu kwibasira ABI1, bityo ikarekura SnRK2s ikanatanga igisubizo cya ABA.
Itsinda ry’ubushakashatsi riyobowe na Porofeseri Xie Qi wo mu Ishuri Rikuru ry’Ubuzima n’Iterambere ry’ibinyabuzima ry’Ishuri Rikuru ry’Ubumenyi ry’Ubushinwa rimaze igihe kinini ryiga ahantu hose, uburyo bwo guhindura inyandiko nyuma y’ubusobanuro bugenga ibimenyetso bya ABA.Ibikorwa byabo byabanje byagaragaje endocytose ya PYL4 yunganirwa no gukwirakwira hose kuri poroteyine V2 isa na E2, kandi ABA iteza imbere XBAT35 gutesha agaciro VPS23A, bityo ikarekura ingaruka zo kubuza kwakira ABA yakira PYL4.Ariko, niba ibimenyetso bya ABA birimo poroteyine zihariye za E2 zisabwa kugirango abantu babe hose, nuburyo ibimenyetso bya ABA bigenga ahantu hose bitarasobanuka neza.
Vuba aha, bagaragaje enzyme yihariye ya E2 UBC27, igenga neza kwihanganira amapfa no guhangana na ABA mubihingwa.Binyuze mu isesengura rya IP / MS, bemeje ko ABA bafatanya kwakira ABI1 na RING yo mu bwoko bwa E3 ligase AIRP3 ikora poroteyine za UBC27.
Basanze UBC27 ikorana na ABI1 kandi igateza imbere iyangirika ryayo, kandi igakora ibikorwa bya E3 bya AIRP3.AIRP3 ikora nka E3 ligase ya ABI1.
Mubyongeyeho, ABI1 ikora epistasis ya UBC27 na AIRP3, mugihe imikorere ya AIRP3 iterwa na UBC27.Byongeye kandi, kuvura ABA bitera imvugo ya UBC27, bikabuza kwangirika kwa UBC27, kandi bikongera imikoranire hagati ya UBC27 na ABI1.
Ibisubizo birerekana E2-E3 nshya murwego rwo gutesha agaciro ABI1 hamwe ningirakamaro kandi igoye ya ABA amarenga na sisitemu ya hose.
Umutwe w'uru rupapuro ni “UBC27-AIRP3 complexe ubiquitination complex igenga ibimenyetso bya ABA mu guteza imbere iyangirika rya ABI1 muri Arabidopsis thaliana.”Yatangajwe kumurongo kuri PNAS ku ya 19 Ukwakira 2020.
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