In photosynthesis, the light-dependent reactions take place on the thylakoid membranes.The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.The thylakoid membrane contains some integral membrane protein complexes that catalyze the light reactions.

Carbonic anhydrase converts the HCO 3 − to CO 2 at the lower pH maintained in the illuminated thylakoid lumen by the light‐driven H + pump, generating CO 2 at 10 times or more the thylakoid HCO 3 − concentration. Efflux of this CO 2 can suppress Rubisco oxygenase activity and stimulate carboxylase activity in the stroma.

The net result is a low pH in the thylakoid lumen, and a high pH in the stroma. ATP synthase uses this electrochemical gradient to make ATP. The interior contains flattened sacs of photosynthetic membranes (thylakoids) formed by the invagination and fusion of the inner membrane. Thylakoids are usually arranged in stacks (grana) and contain the photosynthetic pigment (chlorophyll). During electron transport in the thylakoids, protons amass in the thylakoid lumen of the chloroplast. Become a member and unlock all Study Answers.

The inner surface of the thylakoid membrane encloses a narrow, continuous com-partment, the lumen (1, 2). Electron microscopy studies of spinach thylakoids have suggested that the lumen is a densely 1998-03-20 The TLP18.3 gene was found with a domain of unknown function (DUF477), a family of uncharacterized proteins. Arabidopsis thaliana thylakoid lumen 18.3 protein gene is up-regulated during dehydration. Expression of chloroplast-related DNA sequence in salt sensitive sunflower line by salt stress Ascorbate serves in the following roles in the thylakoid lumen: 1. It functions as a cofactor for violaxanthin–de-epoxidase (VDE), the enzyme involved in the formation of nonphotochemical quenching.

Photosystem II protein 33, a protein conserved in the plastid lineage, is associated with the chloroplast thylakoid membrane and provides stability to photosystem II

The TLP18.3 gene was found with a domain of unknown function (DUF477), a family of uncharacterized proteins. Arabidopsis thaliana thylakoid lumen 18.3 protein gene is up-regulated during dehydration. Expression of chloroplast-related DNA sequence in salt sensitive sunflower line by salt stress the thylakoid-invaginating pyre noid, such as the thylakoid-luminal α-CA, CAH3, an enzyme that could be essential for producing an ample flux of CO 2 to RubisCO by using the acidity of the thylakoid lumen (14, 15).

Ordet thylakoid är från det gröna ordet thylakos , vilket betyder påse eller säck. och den slutna regionen som kallas thylakoid lumen.

Because the thylakoid lumen proteins are in close proximity to the protein complexes of photosynthesis, it is reasonable to assume that the lumen proteins are highly influenced by the presence of light. All known soluble thylakoid lumen proteins (Schubert et al., 2002) and several thylakoid membrane proteins (Mant et al., 1994; Michl et al., 1994; Rodrigues et al., 2011) are synthesized as precursors containing bipartite N-terminal transit peptides consisting of a stromal targeting domain and a thylakoid transfer signal (TTS) in tandem. In particular, PSII complexes were almost completely interdigitated across the thylakoid lumen, with only ~4% overlap of EM density (Figure 4B and F, Figure 4—figure supplement 1). PSII interdigitation has previously been predicted from spinach thylakoids with a contracted ~4.5 nm lumen, which sterically could only permit interdigitation ( Daum et al., 2010 ). 2019-08-13 · It appears that thylakoid membranes can adopt different structural states (Fig. 3c).

2017-10-23 The electron transport chain moves protons across the thylakoid membrane into the lumen.
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Number of thylakoids in a Dec 27, 2013 Lumen: this is the thylakoid membrane bound to the chloroplast compartment. Lamella: linking a thylakoid within one granum to one in another. Get answer: Thylakoids occur inside. 9. 100.

Arabidopsis thaliana thylakoid lumen 18.3 protein gene is up-regulated during dehydration. Expression of chloroplast-related DNA sequence in salt sensitive sunflower line by salt stress Ascorbate serves in the following roles in the thylakoid lumen: 1. It functions as a cofactor for violaxanthin–de-epoxidase (VDE), the enzyme involved in the formation of nonphotochemical quenching.
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During electron transport in the thylakoids, protons amass in the thylakoid lumen of the chloroplast. Become a member and unlock all Study Answers Try it risk-free for 30 days

Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Chloroplast thylakoids Little is known about the structures and functions of thylakoid lumen proteins. However, some of these proteins have an essential role in photosynthesis. Photosystem II (PSII) complexes are embedded in the thylakoid membrane of oxygenic photosynthetic organisms and one of the central subunits, the D1 2020-12-06 · There is no other method to biochemically separate the thylakoid lumen from other intracellular structures, and while fluorescence microscopy of GFP-tagged proteins could be used to determine if a protein associates with the thylakoid membranes, it does not have the resolution to determine if a protein is on the cytoplasmic or lumenal side of the thylakoid membrane. THYLAKOID LUMEN OF PLANT CHLOROPLASTS .