HCF164 — Brassica juncea

Summary

BjHCF164 (BJUB05G60860S) on Indian mustard chromosome B05 encodes a thioredoxin-domain protein of the TxlA/HCF164 family, with NAD(P)H dehydrogenase (quinone) and oxidoreductase activities acting on sulfur-group donors with disulfide as acceptor, and protein binding. The product localises to the thylakoid lumen, chloroplast thylakoid membrane and plastid. It is associated with cytochrome b6f complex assembly, photosystem II assembly, electron transfer, photosynthetic ability, and severe photoautotrophic growth defects with PSII depletion. The gene is also linked to osmotic response sensitivity. Studies of related genes in other species link the family to seedling lethality with cytochrome b6f complex deficiency and photosynthetic growth.