TY  - JOUR
A1  - Thurotte, Adrien
A1  - Seidel, Tobias
A1  - Jilly, Ruven
A1  - Kahmann, Uwe
A1  - Schneider, Dirk
T1  - DnaK3 is involved in biogenesis and/or maintenance of thylakoid membrane protein complexes in the Cyanobacterium Synechocystis sp. PCC 6803
T2  - Life
N2  - DnaK3, a highly conserved cyanobacterial chaperone of the Hsp70 family, binds to cyanobacterial thylakoid membranes, and an involvement of DnaK3 in the biogenesis of thylakoid membranes has been suggested. As shown here, light triggers synthesis of DnaK3 in the cyanobacterium Synechocystis sp. PCC 6803, which links DnaK3 to the biogenesis of thylakoid membranes and to photosynthetic processes. In a DnaK3 depleted strain, the photosystem content is reduced and the photosystem II activity is impaired, whereas photosystem I is regular active. An impact of DnaK3 on the activity of other thylakoid membrane complexes involved in electron transfer is indicated. In conclusion, DnaK3 is a versatile chaperone required for biogenesis and/or maintenance of thylakoid membrane-localized protein complexes involved in electron transfer reactions. As mentioned above, Hsp70 proteins are involved in photoprotection and repair of PS II in chloroplasts.
KW  - chaperone
KW  - Hsp70
KW  - photosynthesis
KW  - thylakoid membrane biogenesis
KW  - photosystem maintenance
KW  - Synechocystis sp. PCC6803
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/55587
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-555874
SN  - 2075-1729
VL  - 10
IS  - 55
PB  - MDPI
CY  - Basel
ER  -