Citrus Sinensis ID: 036337
Local Sequence Feature Prediction
| Prediction and (Method) | Result |
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Close Homologs for Annotation Transfer
Close Homologs in the Non-Redundant Database Detected by BLAST 
Original result of BLAST against Nonredundant Database
GI ![]() | Alignment Graph ![]() | Length ![]() |
Definition ![]() |
Q cover ![]() |
H cover ![]() |
Identity ![]() |
E-value ![]() |
| Query | 197 | ||||||
| 255582174 | 190 | peripheral-type benzodiazepine receptor, | 0.954 | 0.989 | 0.558 | 4e-53 | |
| 225437310 | 185 | PREDICTED: uncharacterized protein LOC10 | 0.939 | 1.0 | 0.548 | 7e-53 | |
| 224064430 | 197 | predicted protein [Populus trichocarpa] | 0.969 | 0.969 | 0.522 | 1e-52 | |
| 224131166 | 199 | predicted protein [Populus trichocarpa] | 0.969 | 0.959 | 0.527 | 4e-51 | |
| 383932366 | 189 | putative peripheral-type benzodiazepine | 0.954 | 0.994 | 0.551 | 2e-47 | |
| 50978430 | 192 | peripheral-type benzodiazepine receptor | 0.923 | 0.947 | 0.526 | 6e-41 | |
| 18407444 | 196 | tryptophan-rich sensory protein-like pro | 0.989 | 0.994 | 0.459 | 1e-40 | |
| 297824879 | 196 | hypothetical protein ARALYDRAFT_483960 [ | 0.984 | 0.989 | 0.452 | 3e-40 | |
| 356505564 | 185 | PREDICTED: uncharacterized protein LOC10 | 0.928 | 0.989 | 0.441 | 1e-35 | |
| 312282289 | 195 | unnamed protein product [Thellungiella h | 0.979 | 0.989 | 0.417 | 5e-35 |
| >gi|255582174|ref|XP_002531881.1| peripheral-type benzodiazepine receptor, putative [Ricinus communis] gi|223528489|gb|EEF30518.1| peripheral-type benzodiazepine receptor, putative [Ricinus communis] | Back alignment and taxonomy information |
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Score = 213 bits (541), Expect = 4e-53, Method: Compositional matrix adjust.
Identities = 110/197 (55%), Positives = 139/197 (70%), Gaps = 9/197 (4%)
Query: 1 MATENLKKRTRDDRNDSDDTANVDKDNEVIKGGKRNNHQRKMVMAKRGLKSLSMAVALPL 60
M ++++K RT+D D ++ K+ ++ +R+ ++M MAKRG++SL++AVA PL
Sbjct: 1 MDSQSIKHRTKDP-----DQSDTPKETDMRSYSRRD---KRMAMAKRGIRSLAIAVAFPL 52
Query: 61 SLTLLNIYFNGSSDRYVK-QEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKP 119
SLTL NIYF GS + Y KPFWFP + LH LAS+FLMGLS+WLVWAEGGFHKKP
Sbjct: 53 SLTLFNIYFFGSRNGYGPLSTKPFWFPPMWALHFTCLASSFLMGLSAWLVWAEGGFHKKP 112
Query: 120 TVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKP 179
L LAQLGL L WDPIVF + A W GLVV A+ GSLV R +EVNPIAGDL+KP
Sbjct: 113 AALSFYLAQLGLGLIWDPIVFRMDATWVGLVVCLAMFGSLVGCSRQFKEVNPIAGDLVKP 172
Query: 180 CVAWAALLSLVNLKLVF 196
+ WAA L++VNLKLVF
Sbjct: 173 SLTWAAFLAIVNLKLVF 189
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Source: Ricinus communis Species: Ricinus communis Genus: Ricinus Family: Euphorbiaceae Order: Malpighiales Class: Phylum: Streptophyta Superkingdom: Eukaryota |
| >gi|225437310|ref|XP_002263702.1| PREDICTED: uncharacterized protein LOC100267613 [Vitis vinifera] | Back alignment and taxonomy information |
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| >gi|224064430|ref|XP_002301472.1| predicted protein [Populus trichocarpa] gi|224100985|ref|XP_002334319.1| predicted protein [Populus trichocarpa] gi|222843198|gb|EEE80745.1| predicted protein [Populus trichocarpa] gi|222870389|gb|EEF07520.1| predicted protein [Populus trichocarpa] | Back alignment and taxonomy information |
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| >gi|224131166|ref|XP_002321017.1| predicted protein [Populus trichocarpa] gi|222861790|gb|EEE99332.1| predicted protein [Populus trichocarpa] | Back alignment and taxonomy information |
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| >gi|383932366|gb|AFH57280.1| putative peripheral-type benzodiazepine receptor [Gossypium hirsutum] | Back alignment and taxonomy information |
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| >gi|50978430|emb|CAH10765.1| peripheral-type benzodiazepine receptor [Solanum tuberosum] | Back alignment and taxonomy information |
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| >gi|18407444|ref|NP_566110.1| tryptophan-rich sensory protein-like protein [Arabidopsis thaliana] gi|75100575|sp|O82245.1|TSPO_ARATH RecName: Full=Translocator protein homolog; Short=AtTSPO gi|16226870|gb|AAL16286.1|AF428356_1 At2g47770/F17A22.16 [Arabidopsis thaliana] gi|3738290|gb|AAC63632.1| expressed protein [Arabidopsis thaliana] gi|15028357|gb|AAK76655.1| unknown protein [Arabidopsis thaliana] gi|19310783|gb|AAL85122.1| unknown protein [Arabidopsis thaliana] gi|330255792|gb|AEC10886.1| tryptophan-rich sensory protein-like protein [Arabidopsis thaliana] | Back alignment and taxonomy information |
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| >gi|297824879|ref|XP_002880322.1| hypothetical protein ARALYDRAFT_483960 [Arabidopsis lyrata subsp. lyrata] gi|297326161|gb|EFH56581.1| hypothetical protein ARALYDRAFT_483960 [Arabidopsis lyrata subsp. lyrata] | Back alignment and taxonomy information |
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| >gi|356505564|ref|XP_003521560.1| PREDICTED: uncharacterized protein LOC100785785 [Glycine max] | Back alignment and taxonomy information |
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| >gi|312282289|dbj|BAJ34010.1| unnamed protein product [Thellungiella halophila] | Back alignment and taxonomy information |
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Prediction of Gene Ontology (GO) Terms
Close Homologs with Gene Ontology terms Detected by BLAST 
Original result of BLAST against Gene Ontology (AMIGO)
ID ![]() |
Alignment graph ![]() |
Length ![]() |
Definition ![]() |
Q cover ![]() |
H cover ![]() |
Identity ![]() |
E-value ![]() |
| Query | 197 | ||||||
| TAIR|locus:2043358 | 196 | TSPO "TSPO(outer membrane tryp | 0.807 | 0.811 | 0.521 | 1.8e-39 | |
| UNIPROTKB|P30536 | 169 | TSPO "Translocator protein" [H | 0.725 | 0.846 | 0.339 | 1.7e-11 | |
| UNIPROTKB|P30535 | 169 | TSPO "Translocator protein" [B | 0.624 | 0.727 | 0.328 | 1.5e-10 | |
| UNIPROTKB|E2RQH5 | 169 | TSPO "Uncharacterized protein" | 0.741 | 0.863 | 0.313 | 5.2e-10 | |
| UNIPROTKB|F1SJR8 | 169 | TSPO "Translocator protein" [S | 0.568 | 0.662 | 0.352 | 5.2e-10 | |
| UNIPROTKB|F1NZA2 | 167 | TSPO "Uncharacterized protein" | 0.558 | 0.658 | 0.361 | 6.6e-10 | |
| RGD|2228 | 169 | Tspo "translocator protein" [R | 0.659 | 0.769 | 0.344 | 6.6e-10 | |
| UNIPROTKB|Q6UN27 | 169 | TSPO "Translocator protein" [S | 0.568 | 0.662 | 0.344 | 1.1e-09 | |
| MGI|MGI:88222 | 169 | Tspo "translocator protein" [M | 0.659 | 0.769 | 0.350 | 1.4e-09 | |
| UNIPROTKB|E2RDM9 | 172 | TSPO2 "Uncharacterized protein | 0.685 | 0.784 | 0.3 | 2.9e-09 |
| TAIR|locus:2043358 TSPO "TSPO(outer membrane tryptophan-rich sensory protein)-related" [Arabidopsis thaliana (taxid:3702)] | Back alignment and assigned GO terms |
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Score = 421 (153.3 bits), Expect = 1.8e-39, P = 1.8e-39
Identities = 85/163 (52%), Positives = 112/163 (68%)
Query: 33 GKRNNHQRKMVMAKRGLKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPF-WFPSLLVL 91
GKR+ +K MAKRGLKSL++AVA P+ +TL YF G+SD Y + K W P L +L
Sbjct: 34 GKRD---QKRAMAKRGLKSLTVAVAAPVLVTLFATYFLGTSDGYGNRAKSSSWIPPLWLL 90
Query: 92 HTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVV 151
HT LAS+ LMGL++WLVW +GGFHKKP LYL LAQ L L WDP+ F +G+ AGL V
Sbjct: 91 HTTCLASSGLMGLAAWLVWVDGGFHKKPNALYLYLAQFLLCLVWDPVTFRVGSGVAGLAV 150
Query: 152 STALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKL 194
S +L + E++P+AG+L+KPC+AWAA ++ VN+KL
Sbjct: 151 WLGQSAALFGCYKAFNEISPVAGNLVKPCLAWAAFVAAVNVKL 193
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| UNIPROTKB|P30536 TSPO "Translocator protein" [Homo sapiens (taxid:9606)] | Back alignment and assigned GO terms |
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| UNIPROTKB|P30535 TSPO "Translocator protein" [Bos taurus (taxid:9913)] | Back alignment and assigned GO terms |
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| UNIPROTKB|E2RQH5 TSPO "Uncharacterized protein" [Canis lupus familiaris (taxid:9615)] | Back alignment and assigned GO terms |
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| UNIPROTKB|F1SJR8 TSPO "Translocator protein" [Sus scrofa (taxid:9823)] | Back alignment and assigned GO terms |
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| UNIPROTKB|F1NZA2 TSPO "Uncharacterized protein" [Gallus gallus (taxid:9031)] | Back alignment and assigned GO terms |
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| RGD|2228 Tspo "translocator protein" [Rattus norvegicus (taxid:10116)] | Back alignment and assigned GO terms |
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| UNIPROTKB|Q6UN27 TSPO "Translocator protein" [Sus scrofa (taxid:9823)] | Back alignment and assigned GO terms |
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| MGI|MGI:88222 Tspo "translocator protein" [Mus musculus (taxid:10090)] | Back alignment and assigned GO terms |
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| UNIPROTKB|E2RDM9 TSPO2 "Uncharacterized protein" [Canis lupus familiaris (taxid:9615)] | Back alignment and assigned GO terms |
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Prediction of Enzyme Commission (EC) Number
EC Number Prediction by Ezypred Server 
Original result from Ezypred Server
Fail to connect to Ezypred Server
Prediction of Functionally Associated Proteins
Functionally Associated Proteins Detected by STRING 
Original result from the STRING server
Fail to connect to STRING server
Conserved Domains and Related Protein Families
Conserved Domains Detected by RPS-BLAST 
Original result of RPS-BLAST against CDD database part I
ID ![]() | Alignment Graph ![]() | Length ![]() |
Definition ![]() |
E-value ![]() |
| Query | 197 | |||
| pfam03073 | 147 | pfam03073, TspO_MBR, TspO/MBR family | 3e-15 | |
| COG3476 | 161 | COG3476, COG3476, Tryptophan-rich sensory protein | 3e-10 |
| >gnl|CDD|217354 pfam03073, TspO_MBR, TspO/MBR family | Back alignment and domain information |
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Score = 69.1 bits (170), Expect = 3e-15
Identities = 38/144 (26%), Positives = 61/144 (42%), Gaps = 2/144 (1%)
Query: 55 AVALPLSLTLLNIYF-NGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEG 113
+A+ L+ L F SS+ Y KP W P V LMG++++LVW G
Sbjct: 3 FIAICLAAGFLGGLFTPTSSEWYASLRKPSWTPPNWVFGPVWTVLYILMGIAAYLVWRAG 62
Query: 114 GFHKKP-TVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPI 172
K+ L L QL L+ W P+ F L + L+V L ++ V+ +
Sbjct: 63 PGTKRRKLALALFALQLALNALWSPLFFGLHSPGLALIVILLLWLLVLATIVAFWRVSRL 122
Query: 173 AGDLMKPCVAWAALLSLVNLKLVF 196
A L+ P + W + + +N +
Sbjct: 123 AALLLVPYLLWVSFATYLNYSIWR 146
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Tryptophan-rich sensory protein (TspO) is an integral membrane protein that acts as a negative regulator of the expression of specific photosynthesis genes in response to oxygen/light. It is involved in the efflux of porphyrin intermediates from the cell. This reduces the activity of coproporphyrinogen III oxidase, which is thought to lead to the accumulation of a putative repressor molecule that inhibits the expression of specific photosynthesis genes. Several conserved aromatic residues are necessary for TspO function: they are thought to be involved in binding porphyrin intermediates. In, the rat mitochondrial peripheral benzodiazepine receptor (MBR) was shown to not only retain its structure within a bacterial outer membrane, but also to be able to functionally substitute for TspO in TspO- mutants, and to act in a similar manner to TspO in its in situ location: the outer mitochondrial membrane. The biological significance of MBR remains unclear, however. It is thought to be involved in a variety of cellular functions, including cholesterol transport in steroidogenic tissues. Length = 147 |
| >gnl|CDD|226007 COG3476, COG3476, Tryptophan-rich sensory protein (mitochondrial benzodiazepine receptor homolog) [Signal transduction mechanisms] | Back alignment and domain information |
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Conserved Domains Detected by HHsearch 
Original result of HHsearch against CDD database
ID ![]() | Alignment Graph ![]() | Length ![]() |
Definition ![]() |
Probability ![]() |
| Query | 197 | |||
| PF03073 | 148 | TspO_MBR: TspO/MBR family; InterPro: IPR004307 Mem | 100.0 | |
| COG3476 | 161 | Tryptophan-rich sensory protein (mitochondrial ben | 100.0 | |
| PHA02980 | 160 | hypothetical protein; Provisional | 100.0 | |
| KOG3797 | 168 | consensus Peripheral-type benzodiazepine receptor | 100.0 | |
| COG4709 | 195 | Predicted membrane protein [Function unknown] | 82.43 |
| >PF03073 TspO_MBR: TspO/MBR family; InterPro: IPR004307 Members of this group are involved in transmembrane signalling | Back alignment and domain information |
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Probab=100.00 E-value=1.8e-40 Score=264.78 Aligned_cols=143 Identities=31% Similarity=0.516 Sum_probs=135.2
Q ss_pred HHHHHHHHHHHHHHHHcCC--ccccCCCCCCCCCCCchhHHHHHHHHHHHHHHHHHHHhhcC-CCCcchhHHHHHHHHHH
Q 036337 54 MAVALPLSLTLLNIYFNGS--SDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEG-GFHKKPTVLYLCLAQLG 130 (197)
Q Consensus 54 ~~i~~p~~~g~~~~~~~~~--~~wY~~L~KP~w~PP~~vF~ivW~ilY~lmg~A~~lv~~~~-~~~~~~~al~ly~~ql~ 130 (197)
+++++|.++|.++++++++ ++||++|+||+|+||+|+|+++|+++|++||+|+|++|+++ +.++++.++.+|.+|++
T Consensus 2 i~~~~~~~~~~~~~~~~~~~~~~wy~~L~kP~~~Pp~~~f~~vW~~ly~l~g~a~~~v~~~~~~~~~~~~~l~l~~~~l~ 81 (148)
T PF03073_consen 2 IFIAAPLVVGFLSGYLTPTDVSEWYDSLKKPSWTPPGWVFGPVWTILYILMGIASYLVWRKGGGSPRRRRALALYAIQLA 81 (148)
T ss_pred eeeHHHHHHHHHHHHHcCCcchHHHhhccCCCCCCcccHHHHHHHHHHHHHHHHHHhhHhcccCcchhHHHHHHHHHHHH
Confidence 5678899999999999865 47899999999999999999999999999999999999987 44556789999999999
Q ss_pred hhhhhhHHHHhhhHHHHHHHHHHHHHHHHHHHHHHHHhhhhhHHHHhhHHHHHHHHHHHHHHHhhh
Q 036337 131 LSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVF 196 (197)
Q Consensus 131 LN~~W~~lfF~~~~~~lali~il~l~~~~~~~~~~f~~i~~~Ag~Ll~PYl~W~~fAt~LN~~i~~ 196 (197)
+|.+|+++||+.|++++|+++++++++++..++..++++||.||++++||++|++|||++|+++|+
T Consensus 82 ln~~W~~ifF~~~~~~la~~~~~~l~~~~~~~~~~~~~~~~~a~~l~~Pyl~W~~fAt~Ln~~i~~ 147 (148)
T PF03073_consen 82 LNFAWSPIFFGLRSLGLALIIILALLGLLAALIFAFWKISRTAGLLLIPYLAWLSFATYLNFSIWR 147 (148)
T ss_pred HHHHHHHHHHHHHcccHHHHHHHHHHHHHHHHHHHHccccHhhHHHHHHHHHHHHHHHHHHHHHHh
Confidence 999999999999999999999999999999999999999999999999999999999999999986
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In both prokaryotes and mitochondria they are localized to the outer membrane, and have been shown to bind and transport dicarboxylic tetrapyrrole intermediates of the haem biosynthetic pathway [, ]. They are associated with the major outer membrane porins (in prokaryotes) and with the voltage-dependent anion channel (in mitochondria) []. Rhodobacter sphaeroides TspO (previously CrtK) is involved in signal transduction, functioning as a negative regulator of the expression of some photosynthesis genes (PpsR/AppA repressor/antirepressor regulon). This down-regulation is believed to be in response to oxygen levels. TspO works through (or modulates) the PpsR/AppA system and acts upstream of the site of action of these regulatory proteins []. It has been suggested that the TspO regulatory pathway works by regulating the efflux of certain tetrapyrrole intermediates of the haem/bacteriochlorophyll biosynthetic pathways in response to the availability of molecular oxygen, thereby causing the accumulation of a biosynthetic intermediate that serves as a corepressor for the regulated genes []. A homologue of the TspO protein in Rhizobium meliloti (Sinorhizobium meliloti) is involved in regulating expression of the ndi locus in response to stress conditions []. There is evidence that the S. meliloti TspO acts through, or in addition to, the FixL regulatory system. In animals, the peripheral-type benzodiazepine receptor (PBR, MBR) is a mitochondrial protein (located in the outer mitochondrial membrane) characterised by its ability to bind with nanomolar affinity to a variety of benzodiazepine-like drugs, as well as to dicarboxylic tetrapyrrole intermediates of the haem biosynthetic pathway. Depending upon the tissue, it was shown to be involved in steroidogenesis, haem biosynthesis, apoptosis, cell growth and differentiation, mitochondrial respiratory control, and immune and stress response, but the precise function of the PBR remains unclear. The role of PBR in the regulation of cholesterol transport from the outer to the inner mitochondrial membrane, the rate-determining step in steroid biosynthesis, has been studied in detail. PBR is required for the binding, uptake and release, upon ligand activation, of the substrate cholesterol []. PBR forms a multimeric complex with the voltage-dependent anion channel (VDAC) [] and adenine nucleotide carrier []. Molecular modeling of PBR suggested that it might function as a channel for cholesterol. Indeed, cholesterol uptake and transport by bacterial cells was induced upon PBR expression. Mutagenesis studies identified a cholesterol recognition/interaction motif (CRAC) in the cytoplasmic C terminus of PBR [, ]. In complementation experiments, rat PBR (pk18) functionally substitutes for its homologue TspO in R. sphaeroides, negatively affecting transcription of specific photosynthesis genes []. This suggests that PBR may function as an oxygen sensor, transducing an oxygen-triggered signal leading to an adaptive cellular response. These observations suggest that fundamental aspects of this receptor and the downstream signal transduction pathway are conserved in bacteria and higher eukaryotic mitochondria. The alpha-3 subdivision of the purple bacteria is considered to be a likely source of the endosymbiont that ultimately gave rise to the mitochondrion. Therefore, it is possible that the mammalian PBR remains both evolutionarily and functionally related to the TspO of R. sphaeroides.; GO: 0016021 integral to membrane |
| >COG3476 Tryptophan-rich sensory protein (mitochondrial benzodiazepine receptor homolog) [Signal transduction mechanisms] | Back alignment and domain information |
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| >PHA02980 hypothetical protein; Provisional | Back alignment and domain information |
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| >KOG3797 consensus Peripheral-type benzodiazepine receptor and related proteins [Signal transduction mechanisms] | Back alignment and domain information |
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| >COG4709 Predicted membrane protein [Function unknown] | Back alignment and domain information |
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Homologous Structure Templates
Structure Templates Detected by BLAST 
Original result of BLAST against Protein Data Bank
No homologous structure with e-value below 0.005
Structure Templates Detected by RPS-BLAST 
Original result of RPS-BLAST against PDB70 database
No hit with e-value below 0.005
Structure Templates Detected by HHsearch 
Original result of HHsearch against PDB70 database
No hit with probability above 80.00
Homologous Structure Domains
Structure Domains Detected by RPS-BLAST 
Original result of RPS-BLAST against SCOP70(version1.75) database
No hit with e-value below 0.005
Homologous Domains Detected by HHsearch 
Original result of HHsearch against SCOP70(version1.75) database
No hit with probability above 80.00