Psyllid ID: psy9699


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---
MWYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAEKKKE
ccccccccccccccHHHHHHHHHHHHHHHHHHHHHHHHHcccEEEEEEccccEEEEEEEccccccEEEEEEEEEEcccccEEEEEEEEcccEEEccccEEEHHHHHHHHHHHHHHHHHccccc
cccccccccccccccHHHHHHHHHHHHHHHHHHHHHHHHHccEEEEEEccccEEEEEcccccccccEEEEEEEEccccccccEEEEEccHHHHHccccEEEHHHHHHHHHHHHHHHHHHcccc
mwylprnftpvkrfepvLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKdtktgvtrsEQFNKSVANyfdetglllpdlvendvSRLHNSILAEKKKE
mwylprnftpvkrfepVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHnsilaekkke
MWYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAEKKKE
*WYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSR************
MWYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNL********************VANYFDETGLLLPDLVENDVSRLH**********
MWYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAEKKKE
MWYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAE****
ooooooooooooooHHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
ooooooooooooooooHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
iiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHHHHooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
iiiiiiiiiiiiiiiiHHHHHHHHHHHHHHHHHHHHHHooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
ooooooooooooooooHHHHHHHHHHHHHHHHHHHHHHiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
MWYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAKKDHIVWEASSYLKKYDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAEKKKE
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 ?
Query123 2.2.26 [Sep-21-2011]
Q5M8Y1201 Probable signal peptidase yes N/A 0.910 0.557 0.495 4e-25
Q9VYY2199 Signal peptidase complex yes N/A 0.934 0.577 0.466 8e-25
Q28250226 Signal peptidase complex yes N/A 0.910 0.495 0.462 4e-24
Q9CYN2226 Signal peptidase complex yes N/A 0.910 0.495 0.462 4e-24
Q4R512226 Signal peptidase complex N/A N/A 0.910 0.495 0.462 4e-24
Q5RAY6226 Signal peptidase complex yes N/A 0.910 0.495 0.462 5e-24
Q15005226 Signal peptidase complex yes N/A 0.910 0.495 0.462 6e-24
Q5BJI9201 Probable signal peptidase yes N/A 0.902 0.552 0.483 1e-23
Q9XWW1180 Probable signal peptidase yes N/A 0.878 0.6 0.324 6e-10
Q615A2180 Probable signal peptidase N/A N/A 0.837 0.572 0.330 6e-09
>sp|Q5M8Y1|SPCS2_XENTR Probable signal peptidase complex subunit 2 OS=Xenopus tropicalis GN=spcs2 PE=2 SV=1 Back     alignment and function desciption
 Score =  113 bits (282), Expect = 4e-25,   Method: Compositional matrix adjust.
 Identities = 59/119 (49%), Positives = 78/119 (65%), Gaps = 7/119 (5%)

Query: 10  PVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVA-KKDHI------VWEASSYLKK 62
           P    +PVL +CV +YFLMMGILT+YT+YKEK IF VA +KD        +W  SS LK+
Sbjct: 81  PFPESKPVLAICVISYFLMMGILTIYTSYKEKSIFLVAHRKDPAGMDPDDIWHLSSSLKR 140

Query: 63  YDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAEKK 121
           +DD Y L + Y   KT   R  +F KS+A +FD+ G L+ DL E +VS+LH+S+  EKK
Sbjct: 141 FDDKYTLKVTYISGKTKAQRDAEFTKSIARFFDDNGTLVMDLFEPEVSKLHDSLAMEKK 199




Microsomal signal peptidase is a membrane-bound endoproteinase that removes signal peptides from nascent proteins as they are translocated into the lumen of the endoplasmic reticulum.
Xenopus tropicalis (taxid: 8364)
EC: 3EC: .EC: 4EC: .EC: -EC: .EC: -
>sp|Q9VYY2|SPCS2_DROME Signal peptidase complex subunit 2 OS=Drosophila melanogaster GN=Spase25 PE=2 SV=1 Back     alignment and function description
>sp|Q28250|SPCS2_CANFA Signal peptidase complex subunit 2 OS=Canis familiaris GN=SPCS2 PE=1 SV=1 Back     alignment and function description
>sp|Q9CYN2|SPCS2_MOUSE Signal peptidase complex subunit 2 OS=Mus musculus GN=Spcs2 PE=2 SV=1 Back     alignment and function description
>sp|Q4R512|SPCS2_MACFA Signal peptidase complex subunit 2 OS=Macaca fascicularis GN=SPCS2 PE=2 SV=1 Back     alignment and function description
>sp|Q5RAY6|SPCS2_PONAB Signal peptidase complex subunit 2 OS=Pongo abelii GN=SPCS2 PE=2 SV=1 Back     alignment and function description
>sp|Q15005|SPCS2_HUMAN Signal peptidase complex subunit 2 OS=Homo sapiens GN=SPCS2 PE=1 SV=3 Back     alignment and function description
>sp|Q5BJI9|SPCS2_DANRE Probable signal peptidase complex subunit 2 OS=Danio rerio GN=spcs2 PE=2 SV=1 Back     alignment and function description
>sp|Q9XWW1|SPCS2_CAEEL Probable signal peptidase complex subunit 2 OS=Caenorhabditis elegans GN=Y37D8A.10 PE=1 SV=1 Back     alignment and function description
>sp|Q615A2|SPCS2_CAEBR Probable signal peptidase complex subunit 2 OS=Caenorhabditis briggsae GN=CBG15767 PE=3 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 ?
Query123
344190603193 signal peptidase complex subunit SPC25 [ 0.926 0.590 0.561 1e-30
270006751193 hypothetical protein TcasGA2_TC013119 [T 0.910 0.580 0.576 1e-29
263173484193 putative microsomal signal peptidase 25 0.910 0.580 0.563 9e-28
48097144192 PREDICTED: probable signal peptidase com 0.926 0.593 0.504 2e-27
380029692192 PREDICTED: probable signal peptidase com 0.926 0.593 0.504 2e-27
242007953195 microsomal signal peptidase 25 kD subuni 0.886 0.558 0.55 5e-26
307177769189 Signal peptidase complex subunit 2 [Camp 0.926 0.603 0.479 6e-26
340719717192 PREDICTED: probable signal peptidase com 0.926 0.593 0.479 2e-25
307199391192 Probable signal peptidase complex subuni 0.926 0.593 0.479 2e-25
114052092184 signal peptidase complex subunit 2 [Bomb 0.918 0.614 0.5 4e-25
>gi|344190603|gb|AEM97987.1| signal peptidase complex subunit SPC25 [Dipetalogaster maximus] Back     alignment and taxonomy information
 Score =  136 bits (343), Expect = 1e-30,   Method: Compositional matrix adjust.
 Identities = 68/121 (56%), Positives = 90/121 (74%), Gaps = 7/121 (5%)

Query: 10  PVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVA-KKDHI------VWEASSYLKK 62
           P  +  PVLI+CV+TYF+ MG+LTLYTTYKEKGIF V+ +KD        +WEASS LKK
Sbjct: 73  PFPQSRPVLIICVSTYFIFMGLLTLYTTYKEKGIFVVSIQKDPAGFVPDNIWEASSVLKK 132

Query: 63  YDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAEKKK 122
           YDD YNL L  KD KTG  RS    +SVAN+ DE G+++ +L+E +VS+LHNS+L+E+K+
Sbjct: 133 YDDKYNLSLAMKDGKTGTVRSATIVRSVANFIDENGVIVHELIEPEVSKLHNSLLSERKE 192

Query: 123 E 123
           +
Sbjct: 193 K 193




Source: Dipetalogaster maximus

Species: Dipetalogaster maximus

Genus: Dipetalogaster

Family: Reduviidae

Order: Hemiptera

Class: Insecta

Phylum: Arthropoda

Superkingdom: Eukaryota

>gi|270006751|gb|EFA03199.1| hypothetical protein TcasGA2_TC013119 [Tribolium castaneum] Back     alignment and taxonomy information
>gi|263173484|gb|ACY69951.1| putative microsomal signal peptidase 25 kD subunit [Cimex lectularius] Back     alignment and taxonomy information
>gi|48097144|ref|XP_393701.1| PREDICTED: probable signal peptidase complex subunit 2-like [Apis mellifera] Back     alignment and taxonomy information
>gi|380029692|ref|XP_003698501.1| PREDICTED: probable signal peptidase complex subunit 2-like [Apis florea] Back     alignment and taxonomy information
>gi|242007953|ref|XP_002424779.1| microsomal signal peptidase 25 kD subunit, putative [Pediculus humanus corporis] gi|212508302|gb|EEB12041.1| microsomal signal peptidase 25 kD subunit, putative [Pediculus humanus corporis] Back     alignment and taxonomy information
>gi|307177769|gb|EFN66766.1| Signal peptidase complex subunit 2 [Camponotus floridanus] Back     alignment and taxonomy information
>gi|340719717|ref|XP_003398294.1| PREDICTED: probable signal peptidase complex subunit 2-like [Bombus terrestris] Back     alignment and taxonomy information
>gi|307199391|gb|EFN80016.1| Probable signal peptidase complex subunit 2 [Harpegnathos saltator] Back     alignment and taxonomy information
>gi|114052092|ref|NP_001040214.1| signal peptidase complex subunit 2 [Bombyx mori] gi|87248409|gb|ABD36257.1| signal peptidase complex subunit 2 [Bombyx mori] 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 ?
Query123
UNIPROTKB|F1SUP2226 SPCS2 "Uncharacterized protein 0.910 0.495 0.470 3.3e-24
FB|FBgn0030306199 Spase25 "Spase 25-subunit" [Dr 0.934 0.577 0.475 5.3e-24
RGD|1311253226 Spcs2 "signal peptidase comple 0.910 0.495 0.462 6.8e-24
UNIPROTKB|Q28250226 SPCS2 "Signal peptidase comple 0.910 0.495 0.462 8.7e-24
MGI|MGI:1913874226 Spcs2 "signal peptidase comple 0.910 0.495 0.462 8.7e-24
UNIPROTKB|E9PI68257 SPCS2 "Signal peptidase comple 0.910 0.435 0.462 1.1e-23
UNIPROTKB|Q15005226 SPCS2 "Signal peptidase comple 0.910 0.495 0.462 1.1e-23
UNIPROTKB|E1BEI2230 SPCS2 "Uncharacterized protein 0.910 0.486 0.447 3.4e-22
ZFIN|ZDB-GENE-050320-32203 spcs2 "signal peptidase comple 0.902 0.546 0.475 5.5e-22
UNIPROTKB|F1P528231 F1P528 "Uncharacterized protei 0.910 0.484 0.444 4.9e-21
UNIPROTKB|F1SUP2 SPCS2 "Uncharacterized protein" [Sus scrofa (taxid:9823)] Back     alignment and assigned GO terms
 Score = 277 (102.6 bits), Expect = 3.3e-24, P = 3.3e-24
 Identities = 56/119 (47%), Positives = 78/119 (65%)

Query:    10 PVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVA-KKDHI------VWEASSYLKK 62
             P    +PVL +CV TYF+MMGILT+YT+YKEK IF VA +KD        +W+ SS LK+
Sbjct:   106 PFPESKPVLALCVITYFVMMGILTIYTSYKEKSIFLVAHRKDPTGMDPDDIWQLSSSLKR 165

Query:    63 YDDMYNLVLQYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSILAEKK 121
             +DD Y L L +   +T   R  +F KS+A +FD +G L+ D  E ++SRLH+S+  E+K
Sbjct:   166 FDDKYTLKLTFISGRTKQQREAEFTKSIAKFFDHSGTLVMDAYEPEISRLHDSLATERK 224




GO:0016021 "integral to membrane" evidence=IEA
GO:0008233 "peptidase activity" evidence=IEA
GO:0006465 "signal peptide processing" evidence=IEA
GO:0005787 "signal peptidase complex" evidence=IEA
FB|FBgn0030306 Spase25 "Spase 25-subunit" [Drosophila melanogaster (taxid:7227)] Back     alignment and assigned GO terms
RGD|1311253 Spcs2 "signal peptidase complex subunit 2 homolog (S. cerevisiae)" [Rattus norvegicus (taxid:10116)] Back     alignment and assigned GO terms
UNIPROTKB|Q28250 SPCS2 "Signal peptidase complex subunit 2" [Canis lupus familiaris (taxid:9615)] Back     alignment and assigned GO terms
MGI|MGI:1913874 Spcs2 "signal peptidase complex subunit 2 homolog (S. cerevisiae)" [Mus musculus (taxid:10090)] Back     alignment and assigned GO terms
UNIPROTKB|E9PI68 SPCS2 "Signal peptidase complex subunit 2" [Homo sapiens (taxid:9606)] Back     alignment and assigned GO terms
UNIPROTKB|Q15005 SPCS2 "Signal peptidase complex subunit 2" [Homo sapiens (taxid:9606)] Back     alignment and assigned GO terms
UNIPROTKB|E1BEI2 SPCS2 "Uncharacterized protein" [Bos taurus (taxid:9913)] Back     alignment and assigned GO terms
ZFIN|ZDB-GENE-050320-32 spcs2 "signal peptidase complex subunit 2 homolog (S. cerevisiae)" [Danio rerio (taxid:7955)] Back     alignment and assigned GO terms
UNIPROTKB|F1P528 F1P528 "Uncharacterized protein" [Gallus gallus (taxid:9031)] Back     alignment and assigned GO terms

Prediction of Enzyme Commission (EC) Number

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

No confident hit for EC number transfering in SWISSPROT detected by BLAST

EC Number Prediction by EFICAz Software ?

No EC number assignment, probably not an enzyme!


Prediction of Functionally Associated Proteins


Conserved Domains and Related Protein Families

Conserved Domains Detected by RPS-BLAST ?

ID ?Alignment Graph ?Length ? Definition ? E-value ?
Query123
pfam06703161 pfam06703, SPC25, Microsomal signal peptidase 25 k 3e-30
>gnl|CDD|219145 pfam06703, SPC25, Microsomal signal peptidase 25 kDa subunit (SPC25) Back     alignment and domain information
 Score =  105 bits (265), Expect = 3e-30
 Identities = 45/105 (42%), Positives = 60/105 (57%), Gaps = 4/105 (3%)

Query: 16  PVLIMCVTTYFLMMGILTLYTTYKEKGIFAVA-KKDHI---VWEASSYLKKYDDMYNLVL 71
           PVLI CV  YF++ GILTL++ + EKGI  V  +KD         SS LKKYD +Y L +
Sbjct: 57  PVLIACVALYFVLSGILTLWSKFVEKGIVYVGKRKDGFSGEKLTISSSLKKYDPLYTLTI 116

Query: 72  QYKDTKTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSI 116
             KD  +   R  +  KS A +FDE G  + DL E  +S L N++
Sbjct: 117 TVKDKSSSSQREVELTKSFAEFFDEDGYFVEDLFEKWLSELLNAL 161


This family consists of several microsomal signal peptidase 25 kDa subunit proteins. Translocation of polypeptide chains across the endoplasmic reticulum (ER) membrane is triggered by signal sequences. Subsequently, signal recognition particle interacts with its membrane receptor and the ribosome-bound nascent chain is targeted to the ER where it is transferred into a protein-conducting channel. At some point, a second signal sequence recognition event takes place in the membrane and translocation of the nascent chain through the membrane occurs. The signal sequence of most secretory and membrane proteins is cleaved off at this stage. Cleavage occurs by the signal peptidase complex (SPC) as soon as the lumenal domain of the translocating polypeptide is large enough to expose its cleavage site to the enzyme. The signal peptidase complex is possibly also involved in proteolytic events in the ER membrane other than the processing of the signal sequence, for example the further digestion of the cleaved signal peptide or the degradation of membrane proteins. Mammalian signal peptidase is as a complex of five different polypeptide chains. This family represents the 25 kDa subunit (SPC25). Length = 161

Conserved Domains Detected by HHsearch ?

ID ?Alignment Graph ?Length ? Definition ? Probability ?
Query 123
PF06703162 SPC25: Microsomal signal peptidase 25 kDa subunit 100.0
KOG4072|consensus127 99.98
>PF06703 SPC25: Microsomal signal peptidase 25 kDa subunit (SPC25); InterPro: IPR009582 This family consists of several microsomal signal peptidase 25 kDa subunit proteins Back     alignment and domain information
Probab=100.00  E-value=2.5e-38  Score=230.82  Aligned_cols=115  Identities=38%  Similarity=0.633  Sum_probs=109.3

Q ss_pred             eeecccccCCCCchhhhhhHHHHHHHHHHHHHHHHhhhhcCeEEEEE-e----CCcEEEEEeecCCCCceeEEEEEEEeC
Q psy9699           2 WYLPRNFTPVKRFEPVLIMCVTTYFLMMGILTLYTTYKEKGIFAVAK-K----DHIVWEASSYLKKYDDMYNLVLQYKDT   76 (123)
Q Consensus         2 ~f~~dy~~~f~~sk~~l~~~V~~YfiLsgilt~~~~~vEK~~~yvg~-k----~~~~i~isS~~~k~~p~Y~l~l~~~~~   76 (123)
                      +|+|||++|||+|++++++||++||+|||+||+|++|+|||++|+|. +    ++++|+|+|+++||+|+|+|++++.++
T Consensus        43 a~~~d~~~~f~~s~~~~~~~v~~YfiLs~il~~~~~~~ek~~~~~g~~~~~~~~~~~i~i~s~~~k~~p~Y~l~i~~~~~  122 (162)
T PF06703_consen   43 AFFYDYKYPFPESKPYLIICVILYFILSGILTLYSYFVEKDIFYVGKRKDGSSSGEKITISSSMPKYDPIYTLTITYRDG  122 (162)
T ss_pred             HHHhhhcCCCCccHHHHHHHHHHHHHHHHHHHHHHHHhcCCEEEEEeccCCCCCCCEEEEEEEccCCCCeEEEEEEEEcC
Confidence            58999999999999999999999999999999999999999999999 6    589999999999999999999999988


Q ss_pred             CCCeeeeEEEeeeccceeccCceechHhHHHHHHHHHHHH
Q psy9699          77 KTGVTRSEQFNKSVANYFDETGLLLPDLVENDVSRLHNSI  116 (123)
Q Consensus        77 ~~~~~~~~~~~~~v~~~Fd~~G~l~~~~f~~~l~~l~~~l  116 (123)
                      +++..++.+.++|+++|||+||+|++++|++|++++++++
T Consensus       123 ~~~~~~~~~~~~~v~~~Fde~G~l~~~~~~~~l~~ll~~~  162 (162)
T PF06703_consen  123 KSKSSKEVSVSKSVGKFFDEDGYLVEDLFENWLEKLLEKF  162 (162)
T ss_pred             CCCccceEEEEEehhhEECCCCEEeHHHHHHHHHHHHhcC
Confidence            7666677999999999999999999999999999999864



Translocation of polypeptide chains across the endoplasmic reticulum (ER) membrane is triggered by signal sequences. Subsequently, signal recognition particle interacts with its membrane receptor and the ribosome-bound nascent chain is targeted to the ER where it is transferred into a protein-conducting channel. At some point, a second signal sequence recognition event takes place in the membrane and translocation of the nascent chain through the membrane occurs. The signal sequence of most secretory and membrane proteins is cleaved off at this stage. Cleavage occurs by the signal peptidase complex (SPC) as soon as the lumenal domain of the translocating polypeptide is large enough to expose its cleavage site to the enzyme. The signal peptidase complex is possibly also involved in proteolytic events in the ER membrane other than the processing of the signal sequence, for example the further digestion of the cleaved signal peptide or the degradation of membrane proteins. Mammalian signal peptidase is as a complex of five different polypeptide chains [].; GO: 0008233 peptidase activity, 0006465 signal peptide processing, 0005787 signal peptidase complex, 0016021 integral to membrane

>KOG4072|consensus 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