Proteins
Curated comments from UniProt
Type | Comment | Proteins |
---|---|---|
AB1K1_ARATH-2 AB1K1_ARATH | function | Kinase that can phosphorylate the tocopherol cyclase VTE1, a key enzyme of tocopherol (vitamin E) metabolism and involved in the recycling of oxidated alpha-tocopherol quinone, possibly stabilizing it at plastoglobules. Regulates also plastoglobule protein composition (PubMed:24267661). Prevents photodamage of chloroplasts under continuous red light, thus working in opposition to ABC1K3 (PubMed:25882344). Together with ABC1K1, contributes to plastoglobule (PG) function in prenyl-lipid metabolism, stress response, and thylakoid remodeling (PubMed:23673981, PubMed:24267661). Involved in chlorophyll degradation and in the maintenance of the number of chlorophyll-binding photosynthetic thylakoid membranes (PubMed:22447966). Ensures photosynthetic electron transport by regulating the homeostasis of plastoquinone, beta-carotene and xanthophyll lutein, as well as membrane antioxidant tocopherol metabolism (PubMed:24267661). Seems to affect specifically stability or turnover of D1 protein, product of psbA, one of the four core subunits of the photosystem II (PSII) (PubMed:25882344). Required for photooxidative stress responses, including the induction of oxidative stress response genes (e.g. FSD1, CSD1, CAT1, and UTG71C1), to prevent photosystem II core and chlorophyll degradations (PubMed:22447966, PubMed:23673981, PubMed:24267661). |
AB1K1_ARATH-2 A0A1P8B7P6_ARATH AB1K1_ARATH | similarity | Belongs to the protein kinase superfamily. ADCK protein kinase family. |
AB1K1_ARATH-2 AB1K1_ARATH | tissue specificity | Expressed in all tissues (e.g. especially in leaves) at all developmental stages from seed germination to flowering, except in the root tips. |
Function
Gene Ontology
cellular component | |
---|---|
plastoglobule | ECO |
plasma membrane | ECO |
chloroplast | ECO |
molecular function | |
ATP binding | ECO |
histone H2AS1 kinase activity | ECO |
protein serine kinase activity | ECO |
protein kinase activity | ECO |
biological process | |
response to red light | ECO |
protein phosphorylation | ECO |
cellular response to nitrogen starvation | ECO |
positive regulation of carotenoid biosynthetic process | ECO |
positive regulation of chlorophyll biosynthetic process | ECO |
response to paraquat | ECO |
plastoglobule organization | ECO |
response to water deprivation | ECO |
thylakoid membrane organization | ECO |
regulation of photosynthesis | ECO |
response to photooxidative stress | ECO |
chlorophyll catabolic process | ECO |
response to blue light | ECO |
photosynthetic electron transport chain | ECO |
regulation of tocopherol cyclase activity | ECO |
regulation of anthocyanin biosynthetic process | ECO |
Interactions
Interaction Network
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