Citrus Sinensis ID: 036337


Local Sequence Feature Prediction

Prediction and (Method)Result
Residue Number Marker
Protein Sequence ?
Secondary Structure (PSIPRED) ?
Secondary Structure Prediction (SSPRO) ?
Coil and Loop (DISEMBL) ?
Flexible Loop (DISEMBL) ?
Low Complexity Region (SEG) ?
Disordered region (IsUnstruct) ?
Disordered Region (DISOPRED) ?
Disordered Region (DISEMBL) ?
Disordered Region (DISPRO) ?
Transmembrane Helix (TMHMM) ?
Transmembrane Helix (HMMTOP) ?
Transmembrane Helix (MEMSAT) ?
TM Helix, Signal Peptide (MEMSAT_SVM) ?
TM Helix, Signal Peptide (Phobius) ?
Signal Peptide (SignalP HMM Mode) ?
Signal Peptide (SignalP NN Mode) ?
Coiled Coils (COILS) ?
Positional Conservation ?
 
--------10--------20--------30--------40--------50--------60--------70--------80--------90-------100-------110-------120-------130-------140-------150-------160-------170-------180-------190-------
MATENLKKRTRDDRNDSDDTANVDKDNEVIKGGKRNNHQRKMVMAKRGLKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVFS
cccccHHccccccccccccccccccccccccccccccHHHHHHHcHHHHHHHHHHHHHHHHHHHHHHHHccccccccccccccccccHHHHHHHHHHHHHHHHHHHHHHHHHccccccHHHHHHHHHHHHHHHHHcHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHc
ccccccEEEccccccccccccccccccccccccccccccHHHHHHHccHHHHHHHHHHHHHHHHHHHHHccccHHHHHcccccccccccHHHHHHHHHHHHHHHHHHHHHHccccccccHHHHHHHHHHHHHHHHHHHHHccccHHHHHHHHHHHHHHHHHHHHHHHcccHHHHHHHHHHHHHHHHHHHHHHHHHHc
matenlkkrtrddrndsddtanvdkdnevikggkrnnhQRKMVMAKRGLKSLSMAVALPLSLTLLNIYfngssdryvkqekpfwfpsLLVLHTASLASTFLMGLSSWLVWaeggfhkkpTVLYLCLAQLglslawdpiVFHLGAYWAGLVVSTALSGSLVWYCRVVEEvnpiagdlmKPCVAWAALLSLVNLKLVFS
matenlkkrtrddrndsddtanvdkdnevikggkrnnhqrkMVMAKRGLKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVFS
MATENLKKrtrddrndsddtanvdKDNEVIKGGKRNNHQRKMVMAKRGLKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVFS
************************************************LKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVF*
*************************************************KSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVFS
*******************TANVDKDNEVIKGGKRNNHQRKMVMAKRGLKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVFS
**********************************************RGLKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVFS
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHHHooooooooooooooHHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiHHHHHHHHHHHHHHHHHHooooHHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHooooooooooooooooooHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHooooHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHoo
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooHHHHHHHHHHHHHHHHHHHHHHHHHiiiiiiiHHHHHHHHHHHHHHHHHHHHHHoo
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHoooooooooooooooooooHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHoooHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiHHHHHHHHHHHHHHHHHHHHHooo
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHoooooooooooooooooooHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiHHHHHHHHHHHHHHHHHHoooooHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHo
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MATENLKKRTRDDRNDSDDTANVDKDNEVIKGGKRNNHQRKMVMAKRGLKSLSMAVALPLSLTLLNIYFNGSSDRYVKQEKPFWFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKPTVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKPCVAWAALLSLVNLKLVFS
no confident homologs detected

Close Homologs for Annotation Transfer

Close Homologs in SWISS-PROT Database Detected by BLAST ?

ID ?Alignment graph ?Length ? Definition ? RBH(Q2H) ? RBH(H2Q) ? Q cover ? H cover ? Identity ? E-value ?
Query197 2.2.26 [Sep-21-2011]
O82245196 Translocator protein homo yes no 0.989 0.994 0.459 3e-42
P30536169 Translocator protein OS=H yes no 0.715 0.834 0.329 5e-07
P16257169 Translocator protein OS=R yes no 0.614 0.715 0.330 5e-05
Q9GMC9169 Translocator protein OS=O N/A no 0.629 0.733 0.308 0.0001
P50637169 Translocator protein OS=M yes no 0.614 0.715 0.338 0.0001
P30535169 Translocator protein OS=B yes no 0.644 0.751 0.307 0.0008
>sp|O82245|TSPO_ARATH Translocator protein homolog OS=Arabidopsis thaliana GN=TSPO PE=1 SV=1 Back     alignment and function desciption
 Score =  171 bits (433), Expect = 3e-42,   Method: Compositional matrix adjust.
 Identities = 91/198 (45%), Positives = 128/198 (64%), Gaps = 3/198 (1%)

Query: 1   MATENLKKRTRDDRNDSDDTANVDKDNEVIKGGKRNNHQRKMVMAKRGLKSLSMAVALPL 60
           M +++++ R  DDR D+  TA  + + +     K    Q++  MAKRGLKSL++AVA P+
Sbjct: 1   MDSQDIRYRGGDDR-DAATTAMAETERKSADDNKGKRDQKR-AMAKRGLKSLTVAVAAPV 58

Query: 61  SLTLLNIYFNGSSDRYVKQEKPF-WFPSLLVLHTASLASTFLMGLSSWLVWAEGGFHKKP 119
            +TL   YF G+SD Y  + K   W P L +LHT  LAS+ LMGL++WLVW +GGFHKKP
Sbjct: 59  LVTLFATYFLGTSDGYGNRAKSSSWIPPLWLLHTTCLASSGLMGLAAWLVWVDGGFHKKP 118

Query: 120 TVLYLCLAQLGLSLAWDPIVFHLGAYWAGLVVSTALSGSLVWYCRVVEEVNPIAGDLMKP 179
             LYL LAQ  L L WDP+ F +G+  AGL V    S +L    +   E++P+AG+L+KP
Sbjct: 119 NALYLYLAQFLLCLVWDPVTFRVGSGVAGLAVWLGQSAALFGCYKAFNEISPVAGNLVKP 178

Query: 180 CVAWAALLSLVNLKLVFS 197
           C+AWAA ++ VN+KL  +
Sbjct: 179 CLAWAAFVAAVNVKLAVA 196




Stress-induced membrane protein that can bind heme and may play a role in the transport of tetrapyrrole intermediates during salt stress and contribute to the detoxification of highly reactive porphyrins in the cytoplasm.
Arabidopsis thaliana (taxid: 3702)
>sp|P30536|TSPOA_HUMAN Translocator protein OS=Homo sapiens GN=TSPO PE=1 SV=3 Back     alignment and function description
>sp|P16257|TSPO_RAT Translocator protein OS=Rattus norvegicus GN=Tspo PE=1 SV=1 Back     alignment and function description
>sp|Q9GMC9|TSPO_SHEEP Translocator protein OS=Ovis aries GN=TSPO PE=1 SV=1 Back     alignment and function description
>sp|P50637|TSPO_MOUSE Translocator protein OS=Mus musculus GN=Tspo PE=2 SV=1 Back     alignment and function description
>sp|P30535|TSPO_BOVIN Translocator protein OS=Bos taurus GN=TSPO PE=2 SV=1 Back     alignment and function description

Close Homologs in the Non-Redundant Database Detected by BLAST ?

GI ?Alignment Graph ?Length ? Definition ? Q cover ? H cover ? Identity ? E-value ?
Query197
255582174190 peripheral-type benzodiazepine receptor, 0.954 0.989 0.558 4e-53
225437310185 PREDICTED: uncharacterized protein LOC10 0.939 1.0 0.548 7e-53
224064430197 predicted protein [Populus trichocarpa] 0.969 0.969 0.522 1e-52
224131166199 predicted protein [Populus trichocarpa] 0.969 0.959 0.527 4e-51
383932366189 putative peripheral-type benzodiazepine 0.954 0.994 0.551 2e-47
50978430192 peripheral-type benzodiazepine receptor 0.923 0.947 0.526 6e-41
18407444196 tryptophan-rich sensory protein-like pro 0.989 0.994 0.459 1e-40
297824879196 hypothetical protein ARALYDRAFT_483960 [ 0.984 0.989 0.452 3e-40
356505564185 PREDICTED: uncharacterized protein LOC10 0.928 0.989 0.441 1e-35
312282289195 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
 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




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
>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
>gi|224131166|ref|XP_002321017.1| predicted protein [Populus trichocarpa] gi|222861790|gb|EEE99332.1| predicted protein [Populus trichocarpa] Back     alignment and taxonomy information
>gi|383932366|gb|AFH57280.1| putative peripheral-type benzodiazepine receptor [Gossypium hirsutum] Back     alignment and taxonomy information
>gi|50978430|emb|CAH10765.1| peripheral-type benzodiazepine receptor [Solanum tuberosum] Back     alignment and taxonomy information
>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
>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
>gi|356505564|ref|XP_003521560.1| PREDICTED: uncharacterized protein LOC100785785 [Glycine max] Back     alignment and taxonomy information
>gi|312282289|dbj|BAJ34010.1| unnamed protein product [Thellungiella halophila] Back     alignment and taxonomy information

Prediction of Gene Ontology (GO) Terms

Close Homologs with Gene Ontology terms Detected by BLAST ?

ID ? Alignment graph ? Length ? Definition ? Q cover ? H cover ? Identity ? E-value ?
Query197
TAIR|locus:2043358196 TSPO "TSPO(outer membrane tryp 0.807 0.811 0.521 1.8e-39
UNIPROTKB|P30536169 TSPO "Translocator protein" [H 0.725 0.846 0.339 1.7e-11
UNIPROTKB|P30535169 TSPO "Translocator protein" [B 0.624 0.727 0.328 1.5e-10
UNIPROTKB|E2RQH5169 TSPO "Uncharacterized protein" 0.741 0.863 0.313 5.2e-10
UNIPROTKB|F1SJR8169 TSPO "Translocator protein" [S 0.568 0.662 0.352 5.2e-10
UNIPROTKB|F1NZA2167 TSPO "Uncharacterized protein" 0.558 0.658 0.361 6.6e-10
RGD|2228169 Tspo "translocator protein" [R 0.659 0.769 0.344 6.6e-10
UNIPROTKB|Q6UN27169 TSPO "Translocator protein" [S 0.568 0.662 0.344 1.1e-09
MGI|MGI:88222169 Tspo "translocator protein" [M 0.659 0.769 0.350 1.4e-09
UNIPROTKB|E2RDM9172 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
 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




GO:0005739 "mitochondrion" evidence=ISM
GO:0016021 "integral to membrane" evidence=IEA
GO:0005783 "endoplasmic reticulum" evidence=IDA
GO:0005795 "Golgi stack" evidence=IDA
GO:0006970 "response to osmotic stress" evidence=IEP
GO:0009651 "response to salt stress" evidence=IEP
GO:0009737 "response to abscisic acid stimulus" evidence=IEP
GO:0016020 "membrane" evidence=IDA
GO:0005794 "Golgi apparatus" evidence=IDA
GO:0006778 "porphyrin-containing compound metabolic process" evidence=IMP
GO:0020037 "heme binding" evidence=IDA
UNIPROTKB|P30536 TSPO "Translocator protein" [Homo sapiens (taxid:9606)] Back     alignment and assigned GO terms
UNIPROTKB|P30535 TSPO "Translocator protein" [Bos taurus (taxid:9913)] Back     alignment and assigned GO terms
UNIPROTKB|E2RQH5 TSPO "Uncharacterized protein" [Canis lupus familiaris (taxid:9615)] Back     alignment and assigned GO terms
UNIPROTKB|F1SJR8 TSPO "Translocator protein" [Sus scrofa (taxid:9823)] Back     alignment and assigned GO terms
UNIPROTKB|F1NZA2 TSPO "Uncharacterized protein" [Gallus gallus (taxid:9031)] Back     alignment and assigned GO terms
RGD|2228 Tspo "translocator protein" [Rattus norvegicus (taxid:10116)] Back     alignment and assigned GO terms
UNIPROTKB|Q6UN27 TSPO "Translocator protein" [Sus scrofa (taxid:9823)] Back     alignment and assigned GO terms
MGI|MGI:88222 Tspo "translocator protein" [Mus musculus (taxid:10090)] Back     alignment and assigned GO terms
UNIPROTKB|E2RDM9 TSPO2 "Uncharacterized protein" [Canis lupus familiaris (taxid:9615)] Back     alignment and assigned GO terms

Prediction of Enzyme Commission (EC) Number

EC Number Prediction by Annotation Transfer from SWISS-PROT Entries ?

ID ?Name ?Annotated EC number ?Identity ?Query coverage ?Hit coverage ?RBH(Q2H) ?RBH(H2Q) ?
O82245TSPO_ARATHNo assigned EC number0.45950.98980.9948yesno

EC Number Prediction by Ezypred Server ?

Fail to connect to Ezypred Server

EC Number Prediction by EFICAz Software ?

No EC number assignment, probably not an enzyme!


Prediction of Functionally Associated Proteins

Functionally Associated Proteins Detected by STRING ?

Fail to connect to STRING server


Conserved Domains and Related Protein Families

Conserved Domains Detected by RPS-BLAST ?

ID ?Alignment Graph ?Length ? Definition ? E-value ?
Query197
pfam03073147 pfam03073, TspO_MBR, TspO/MBR family 3e-15
COG3476161 COG3476, COG3476, Tryptophan-rich sensory protein 3e-10
>gnl|CDD|217354 pfam03073, TspO_MBR, TspO/MBR family Back     alignment and domain information
 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


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

Conserved Domains Detected by HHsearch ?

ID ?Alignment Graph ?Length ? Definition ? Probability ?
Query 197
PF03073148 TspO_MBR: TspO/MBR family; InterPro: IPR004307 Mem 100.0
COG3476161 Tryptophan-rich sensory protein (mitochondrial ben 100.0
PHA02980160 hypothetical protein; Provisional 100.0
KOG3797168 consensus Peripheral-type benzodiazepine receptor 100.0
COG4709195 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
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



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
>PHA02980 hypothetical protein; Provisional Back     alignment and domain information
>KOG3797 consensus Peripheral-type benzodiazepine receptor and related proteins [Signal transduction mechanisms] Back     alignment and domain information
>COG4709 Predicted membrane protein [Function unknown] Back     alignment and domain information

Homologous Structure Templates

Structure Templates Detected by BLAST ?

No homologous structure with e-value below 0.005

Structure Templates Detected by RPS-BLAST ?

No hit with e-value below 0.005

Structure Templates Detected by HHsearch ?

No hit with probability above 80.00


Homologous Structure Domains

Structure Domains Detected by RPS-BLAST ?

No hit with e-value below 0.005

Homologous Domains Detected by HHsearch ?

No hit with probability above 80.00