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SIGC SIGC rbcL rbcL HY5 HY5 HO1 HO1 RBCS-2B RBCS-2B BCA1 BCA1 FC1 FC1 rpoB rpoB ACT7 ACT7 ndhF ndhF psbD psbD psaA psaA psaJ psaJ clpP1 clpP1 psbB psbB psbN psbN psbA psbA PDS PDS LHCB1.2 LHCB1.2 ACT2 ACT2 DG1 DG1 CHLH CHLH SIGF SIGF LHCB2.2 LHCB2.2 GUN1 GUN1 SIGE SIGE SIGD SIGD
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query proteins and first shell of interactors
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second shell of interactors
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proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
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experimentally determined
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SIGCRNA polymerase sigma factor sigC; Sigma factors are initiation factors that promote the attachment of plastid-encoded RNA polymerase (PEP) to specific initiation sites and are then released. (571 aa)
rbcLRibulose bisphosphate carboxylase large chain; RuBisCO catalyzes two reactions: the carboxylation of D- ribulose 1,5-bisphosphate, the primary event in carbon dioxide fixation, as well as the oxidative fragmentation of the pentose substrate in the photorespiration process. Both reactions occur simultaneously and in competition at the same active site. Belongs to the RuBisCO large chain family. Type I subfamily. (479 aa)
HY5Transcription factor HY5; Transcription factor that promotes photomorphogenesis in light. Acts downstream of the light receptor network and directly affects transcription of light-induced genes. Specifically involved in the blue light specific pathway, suggesting that it participates in transmission of cryptochromes (CRY1 and CRY2) signals to downstream responses. In darkness, its degradation prevents the activation of light-induced genes (Probable). Acts coordinately with SPL7 to regulate the microRNA miR408 and its target genes in response to changes in light and copper conditions. R [...] (168 aa)
HO1Heme oxygenase 1, chloroplastic; Key enzyme in the synthesis of the chromophore of the phytochrome family of plant photoreceptors. Catalyzes the opening of the heme ring to form the open-chain tetrapyrrole biliverdin IX with the release of iron and carbon monoxide (CO). Produces specifically the biliverdin IX-alpha isomer. Can form complex with heme, is ferredoxin- dependent and its activity is increased in the presence of ascorbate. Plays a role in salt acclimation signaling. May affect the plastid-to- nucleus signaling pathway by perturbing tetrapyrrole synthesis. The plastid-to-nucl [...] (282 aa)
RBCS-2BRibulose bisphosphate carboxylase small chain 2B, chloroplastic; RuBisCO catalyzes two reactions: the carboxylation of D- ribulose 1,5-bisphosphate, the primary event in carbon dioxide fixation, as well as the oxidative fragmentation of the pentose substrate. Both reactions occur simultaneously and in competition at the same active site (By similarity); Belongs to the RuBisCO small chain family. (181 aa)
BCA1Beta carbonic anhydrase 1, chloroplastic; Reversible hydration of carbon dioxide. Required for photosynthesis in cotyledons. Binds salicylic acid. Together with BCA4, involved in the CO(2) signaling pathway which controls gas-exchange between plants and the atmosphere by modulating stomatal development and movements. Promotes water use efficiency. (347 aa)
FC1Ferrochelatase-1, chloroplastic/mitochondrial; Catalyzes the last step of heme biosynthesis by inserting ferrous iron into protoporphyrin IX to produce protoheme. Produces heme for photosynthetic cytochromes, but does not seem to be involved in stress responses. May be involved in wound-induced supply of heme to defensive hemoproteins outside plastids. Regulates the expression of photosynthesis-associated nuclear genes in undevelopped chloroplasts through production of heme. (466 aa)
rpoBDNA-directed RNA polymerase subunit beta; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. (1072 aa)
ACT7Actin-7; Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells. Essential component of cell cytoskeleton; plays an important role in cytoplasmic streaming, cell shape determination, cell division, organelle movement and extension growth. This is considered as one of the vegetative actins which is involved in the regulation of hormone-induced plant cell proliferation and callus formation. (377 aa)
ndhFNAD(P)H-quinone oxidoreductase subunit 5, chloroplastic; NDH shuttles electrons from NAD(P)H:plastoquinone, via FMN and iron-sulfur (Fe-S) centers, to quinones in the photosynthetic chain and possibly in a chloroplast respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be plastoquinone. Couples the redox reaction to proton translocation, and thus conserves the redox energy in a proton gradient (By similarity). (746 aa)
psbDPhotosystem II D2 protein; Photosystem II (PSII) is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H(2)O, generating O(2) and a proton gradient subsequently used for ATP formation. It consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. The D1/D2 (PsbA/PsbA) reaction center heterodimer binds P680, the primary electron donor of PSII as well as several subsequent electron acceptors. D2 is needed for assembly of a stable PSII complex. (353 aa)
psaAPhotosystem I P700 chlorophyll a apoprotein A1; PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin. (750 aa)
psaJPhotosystem I reaction center subunit IX; May help in the organization of the PsaE and PsaF subunits. Belongs to the PsaJ family. (44 aa)
clpP1Chloroplastic ATP-dependent Clp protease proteolytic subunit 1; Cleaves peptides in various proteins in a process that requires ATP hydrolysis. Has a chymotrypsin-like activity. Plays a major role in the degradation of misfolded proteins. (196 aa)
psbBPhotosystem II CP47 reaction center protein; One of the components of the core complex of photosystem II (PSII). It binds chlorophyll and helps catalyze the primary light- induced photochemical processes of PSII. PSII is a light-driven water:plastoquinone oxidoreductase, using light energy to abstract electrons from H(2)O, generating O(2) and a proton gradient subsequently used for ATP formation; Belongs to the PsbB/PsbC family. PsbB subfamily. (508 aa)
psbNProtein PsbN; May play a role in photosystem I and II biogenesis. Belongs to the PsbN family. (43 aa)
psbAPhotosystem II protein D1; Photosystem II (PSII) is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H(2)O, generating O(2) and a proton gradient subsequently used for ATP formation. It consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. The D1/D2 (PsbA/PsbA) reaction center heterodimer binds P680, the primary electron donor of PSII as well as several subsequent electron acceptors. (353 aa)
PDS15-cis-phytoene desaturase, chloroplastic/chromoplastic; Converts phytoene into zeta-carotene via the intermediary of phytofluene by the symmetrical introduction of two double bonds at the C-11 and C-11' positions of phytoene with a concomitant isomerization of two neighboring double bonds at the C9 and C9' positions from trans to cis; Belongs to the carotenoid/retinoid oxidoreductase family. (566 aa)
LHCB1.2Chlorophyll a-b binding protein 3, chloroplastic; The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated; Belongs to the light-harvesting chlorophyll a/b-binding (LHC) protein family. (267 aa)
ACT2Actin-2; Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells. Essential component of cell cytoskeleton; plays an important role in cytoplasmic streaming, cell shape determination, cell division, organelle movement and extension growth. This is considered as one of the vegetative actins. (377 aa)
DG1Pentatricopeptide repeat-containing protein At5g67570, chloroplastic; Involved in the regulation of early chloroplast development and chloroplast gene expression in a SIGF-dependent manner. Belongs to the PPR family. P subfamily. (798 aa)
CHLHMagnesium-chelatase subunit ChlH, chloroplastic; Multifunctional protein involved in chlorophyll synthesis, plastid-to-nucleus retrograde signaling and abscisic acid (ABA) perception. In chlorophyll synthesis, catalyzes the insertion of magnesium ion into protoporphyrin IX to yield Mg-protoporphyrin IX. The reaction takes place in two steps, with an ATP-dependent activation followed by an ATP-dependent chelation step. In addition to its function in the Mg-chelatase enzyme, is required for the plastid-to- nucleus retrograde signaling. The plastid-to-nucleus signal plays an important rol [...] (1381 aa)
SIGFRNA polymerase sigma factor sigF, chloroplastic; Sigma factors are initiation factors that promote the attachment of plastid-encoded RNA polymerase (PEP) to specific initiation sites and are then released. Regulates transcription in chloroplast in a DG1-dependent manner. Involved in light-dependent chloroplast development. Required during early plant development and primary leaf formation. (547 aa)
LHCB2.2Chlorophyll a-b binding protein 2.2, chloroplastic; The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated (By similarity). Mediates rapid phosphorylation and migration of LHCII-PSII to photosystem I (PSI) after transition to state 2 (red) light conditions, thus leading to the formation of PSI-PSII-LHCII and PSI-LHCII supercomplex to balance the relative excitation of PSI and PSII. Involved in the production of reactive oxygen species (ROS) and stomatal closure upon abscisic acid ( [...] (265 aa)
GUN1Pentatricopeptide repeat-containing protein At2g31400, chloroplastic. (918 aa)
SIGERNA polymerase sigma factor sigE, chloroplastic/mitochondrial; Essential protein. Sigma factors are initiation factors that promote the attachment of plastid-encoded RNA polymerase (PEP) to specific initiation sites (e.g. psbA and psbD) and are then released. Essential for blue light-mediated transcription of psbD, which encodes the photosystem II reaction center protein D2. Plays a role in reproduction. Required during female gametophyte development. (517 aa)
SIGDRNA polymerase sigma factor sigD, chloroplastic; Sigma factors are initiation factors that promote the attachment of plastid-encoded RNA polymerase (PEP) to specific initiation sites and are then released. Regulates transcription of the ndhF gene which codes for a subunit of the plastid NDH [NAD(P)H dehydrogenase] complex. (419 aa)
Your Current Organism:
Arabidopsis thaliana
NCBI taxonomy Id: 3702
Other names: A. thaliana, Arabidopsis thaliana (L.) Heynh., mouse-ear cress, thale cress, thale-cress
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