Conserved Protein Domain Family
serpinE3

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cd19574: serpinE3 
serpin family E member 3
The function of serpin E3 is not known. It is a member of clade E, which also includes nexin and plasminogen activator inhibitor type 1, of the serpin superfamily. In general, SERine Proteinase INhibitors (serpins) exhibit conformational polymorphism shifting from native to cleaved, latent, delta, or polymorphic forms. Many serpins, such as antitrypsin and antichymotrypsin, function as serine protease inhibitors which regulate blood coagulation cascades. Non-inhibitory serpins perform many diverse functions such as chaperoning proteins or transporting hormones. Serpins are of medical interest because mutants have been associated with blood clotting disorders, emphysema, cirrhosis, and dementia. A classification based on evolutionary relatedness has resulted in the assignment of serpins to 16 clades designated A-P along with some orphans.
Statistics
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PSSM-Id: 381040
Aligned: 19 rows
Threshold Bit Score: 637.448
Created: 28-Aug-2017
Updated: 2-Oct-2020
Structure
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Aligned Rows:
 
reactive center
Feature 1:reactive center loop (RCL)
Evidence:
  • Comment:depending on the conformational state, the RC loop is surface accessible in the active form or buried and inserted as the central beta strand in the inactive form.

Sequence Alignment
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Format: Row Display: Color Bits: Type Selection:
Feature 1                                                                                        
A8MV23        18 ANGHLREGMTLLKTEFALHLYQSVAACRNETNFVISPAGVSLPLEILQFGAEGSTGQQLADALGYTVHDkRVKDFLHAVY 97  human
XP_015131346  18 GNCVSYDELKDLKIEFAINLYRHASEVENRTNLVISPASVAISLELLQFGAQGNTSMELQNALGYNIHDqNVQDMLHKVY 97  chicken
XP_017334912  18 QKTCNGSSVTNFDAEFSISLYQALAETDNSSNLIVSPASISLSLRLLQLGARGNTLAQIERTMGYDINDpTIQEAVSQAR 97  channel catfish
XP_014350259  51 GCCDLQDTFKELSTEFAVNFYKKAAESENETNLVVSPVSVSVLLELLQFGAQGNTFIQLENVLGYNMHDwRVRDFLCKIY 130 coelacanth
XP_007905384  19 GCCDFQDTIKELNTEFALNFYHTFAGLEGYHNVIVSPASVTVALGLLQFGAKGNTFTQLENALGYNVHDlRVQRFLRKMY 98  elephant shark
OCA46819      22 ASCISYDKLRELNLHFAVRLYQTLVNMENRTNLVVSPSSVASSLGLLQFGAQGNTFAQMESILGYNVHDvTVQDFMETMF 101 western clawed ...
XP_020825638  19 GNGGLQKELKALKTEFAVRLYQSLTGNGNGTNLVISPASVSVPLEILQFGAQGNTCLQLERALGYTVHDrRVHDFLRIAQ 98  koala
KFV07559      22 GSCMSYDELKELKTEFAINLYRHVSEAENRTNLVVSPASLAVSLELLQFGAQGNTFTELQDALGYNIHDqSVQDFLHAVY 101 red-crested turaco
EAX08871      18 ANGHLREGMTLLKTEFALHLYQSVAACRNETNFVISPAGVSLPLEILQFGAEGSTGQQLADALGYTVHDkRVKDFLHAVY 97  human
NP_001093829  18 GASNLHEDLTLLRTDLALRLYRSVAAAGNQTNLVLSPAGAFIPLELLQFGARGNTGRQLAQALGYTVHDpKVREWLQTVY 97  cattle
Feature 1                                                                                        
A8MV23        98 ATLPTSsQGTEMELACSLFVQVGTPLSPCFVEHVSWWANSSLEPADLsepnSTAIQTSEGASRETAGGGpsegpggwp-- 175 human
XP_015131346  98 EGAADSgQGAVVQLACSLFTHTGVQLSPRFAARVAHWANSSLQQADFtnpnQTAAQIQGWITGNLAGSIatqgkdslinl 177 chicken
XP_017334912  98 CDLYNSsQGGRLQFTNTLLIQSGIQLQPEFTQHAMQWCNSSLISVNFslpnHTQVRFQQVPTSRGEAKEvmqasw----- 172 channel catfish
XP_014350259 131 EDVTTStPTTAVQLASSLFVQAGIPLSPDFTEQISGWVNSSLQQANFsepnRTAAQINQWLHVKSRGNDlklnherevrd 210 coelacanth
XP_007905384  99 EDLTNSsHSPVVQLACGLFVESSVQLSPHFSERTAVWGNGSLQRANFsnpnETATLINNWVSAKSGGEIrdfmacp---- 174 elephant shark
OCA46819     102 SGLANSsQGTAIHLACALFIQTGTTFSPRFIQYAALWANSSLQLANFsepgMTATQINQWVSSNTGGGIqplvpcd---- 177 western clawed ...
XP_020825638  99 AAATTSgPGTMIQLACAFFVQTGTQLSSRFTEHISLWANSSLVTTNFsepnRTTAQINRWVSGFVADEKngnvsle---- 174 koala
KFV07559     102 EGVTNSsQGTVVQLACSFFVDAGVQLSPHFAARAARWANSSLQQTNFtdfnRTAAQIQEWIMGNLGDRYvrgmple---- 177 red-crested turaco
EAX08871      98 ATLPTSsQGTEMELACSLFVQVGTPLSPCFVEHVSWWANSSLEPADLsepnSTAIQTSEGASRETAGGGpsegpggwp-- 175 human
NP_001093829  98 AVLPSTnPGAKLELACTLYVQTGTPLAPCFVEQVSRWANSSLELANFrepnSTAMLANGWGPRQTAGDEpvgsawer--- 174 cattle
Feature 1                                                                                        
A8MV23       176 -----------------------------------------------weqvsaafaQLVLVSTMSFQGTWRKRFssTDTQ 208 human
XP_015131346 178 sskyrltgnpeefylpnctmplavwagqpvspspslsladrdvhgvpseeavsplsRVAVVSTMYFKSTWLKKFsfTDTQ 257 chicken
XP_017334912 173 ---------------------------------------------------watvpHMALLSSVDFQGSWQKQFlfRRTQ 201 channel catfish
XP_014350259 211 l--------------------------------------------ifsdmlgspvtQIAVVSVMYFKSTWQKPFtfANTQ 246 coelacanth
XP_007905384 175 -------------------------------------------------matppltQIAVASAMYFKSTWQKPFllSETQ 205 elephant shark
OCA46819     178 -------------------------------------------------efgpvfpQIALVSTMYFKSTWKTKFsfTDTQ 208 western clawed ...
XP_020825638 175 -------------------------------------------------rihsalaQMALVSTMSFQSIWQKRFsfTDTQ 205 koala
KFV07559     178 -------------------------------------------------sagsplsQVTLVSTMYFKSTWQKKFsfMDTQ 208 red-crested turaco
EAX08871     176 -----------------------------------------------weqvsaafaQLVLVSTMSFQGTWRKRFssTDTQ 208 human
NP_001093829 175 -------------------------------------------------gggaesaQLVLVSTVSFQSAWRHQFs-SDTQ 204 cattle
Feature 1                                                                                        
A8MV23       209 ILPFTCAYGLVLQVPMMHQTTEVNYGQFQDTAGHQVGVLELPYLGSAVSLFLVLPRDKDTPLSHIEPHLTASTIHLWTTS 288 human
XP_015131346 258 ILPFTTAESSTLKVPTMHHTAEVNYGQFQTATQDAFSVIELPYLGEKLSMFIVLPSHKRTPLSHIESHLSAKTIALWSSS 337 chicken
XP_017334912 202 NLPFSLANGSNIKVPMMYQSTEVKFGQFHLPSDQRYSVLELPYSGQSLSLLLVIPSERKTPLSLFQTQLTRRTLAIWNTG 281 channel catfish
XP_014350259 247 NLPFTTADASVLKVPMMYQTAEVNYGQFKFASEEHIAVLELPYLGNAVSMFVVLPSNRKTPLSLIEPYLTASAILLWTNN 326 coelacanth
XP_007905384 206 HLSFTKADGTVVKVPMMYQTAEVNYGQIKTATNQRFTVLELSYLGHAVSMFIIIPSERRMPLSALEPHITSRSLSMWTNN 285 elephant shark
OCA46819     209 TLPFISTDGSTIKVPMMHQTADVNYGQFETPSLKRFTVVELPYIGNTVSMFVVRPSDRNTPLSCIEANLTSKSMAQWANS 288 western clawed ...
XP_020825638 206 VLSFTSTEGLILRVPMMYQTADVNYGQFQVIDEQQVGVLELPYRGSSVSLFLVLPRHKATPLALLEPYLTASAIHIWMNS 285 koala
KFV07559     209 MLPFTTAEGSTLKVPTMHRTAEVNYGQFQTAALEDFSVVELPYLGEKLSMFLLLPNHKRTSLSQIESHLSAKTITLWANS 288 red-crested turaco
EAX08871     209 ILPFTCAYGLVLQVPMMHQTTEVNYGQFQDTAGHQVGVLELPYLGSAVSLFLVLPRDKDTPLSHIEPHLTASTIHLWTTS 288 human
NP_001093829 205 LLPFTCAQGLTLEVPMMYQMAEVNFGQFQDPAGHQVGVLELPYLGNVASLLLVLPRDRDTPLSHIEPHLTASLLHAWTAS 284 cattle
Feature 1                                                                           #############
A8MV23       289 LRRARMDVFLPRFRIQNQFNLKSILNSWGVTDLFDPLKANLKGIS-GQDGFYVSEAIHKAKIEVLEEGTKASGATALLLL 367 human
XP_015131346 338 LKRMKMDIFLPRFSIQSLFDLKTVFSALGIRDAFDPITANFKGIS-EQAGLYISEAIHKAKIEVTEDGTKASGATAMVLL 416 chicken
XP_017334912 282 LRHTKMDIFLPRFKLHYQVNLKPVLELLGISDAFDPISADFRGIS-DTEGFYVSEAVHKAMIDVTENGTAAAAATAMVLL 360 channel catfish
XP_014350259 327 MRRMKMDIFLPRFKLQNKLNLKIVLPALGITDPFDPLKADFRGIS-DQENLYVSEAIHKAKIEVTEDGTRASAAAAMVLL 405 coelacanth
XP_007905384 286 MRRIKMDVFLPKFKVQNKFNLKMVLGALGMTDLFSPGEADFRGIS-EQDKLYVSEAIHEAKIEVTENGTKAAAATAMVLL 364 elephant shark
OCA46819     289 MKRMKMDVFLPRFRLQSHSNLRNVLPALGATDLFDPWKANFKGIS-EQSGLYISQAIHKAEIEVAEGGTRASGVTAMVLL 367 western clawed ...
XP_020825638 286 LKRIKMDVFLPRFRIENHFNMKDVLSSLGITDLFDPFKANLKGISvGQDDLYVSEAIHNARMEVLEDGTKASGTTALVLL 365 koala
KFV07559     289 LRRTKMDIFLPRFSIQSLFDLKTVFSALGIRDAFDPITANFKGIS-EQGSLYISEAIHKAEIEVTEDGTKASGTTAMVLL 367 red-crested turaco
EAX08871     289 LRRARMDVFLPRFRIQNQFNLKSILNSWGVTDLFDPLKANLKGIS-GQDGFYVSEAIHKAKIEVLEEGTKASGATALLLL 367 human
NP_001093829 285 LKRARMEVFLPRFRIQNHFDLKNILYSWGVIDLFDPLRANLKGIS-GQDGFYVSEAIHKAKIEVSEEGTKASAATALLLL 363 cattle
Feature 1        #############                       
A8MV23       368 KRSRIPIFKADRPFIYFLREPNTG-ITVFFDRIQII 402 human
XP_015131346 417 KRSRTPIFKADRPFTFFLRQANTGtYARFLIQQQNH 452 chicken
XP_017334912 361 KRSRASVFKVDRPFLFILRCVNGG-SVLFIGRVMNP 395 channel catfish
XP_014350259 406 KRSRAPVFKADRPFLFLLRQADTG-VTLFMGRVVNP 440 coelacanth
XP_007905384 365 KRSRSLVFKADRPFFFLLRHTNTG-AILFMGRIMDP 399 elephant shark
OCA46819     368 KRSRMPVFKADRPFFFFLRQASSG-SILFIGRVTNP 402 western clawed frog
XP_020825638 366 RRSRTPIFKADRPFIFFLRESNTG-SVLCIGRVTNP 400 koala
KFV07559     368 KRSRTPIFKADRPFTFFLRQANTG-SVLFIGRVTNP 402 red-crested turaco
EAX08871     368 KRSRIPIFKADRPFIYFLREPNTG-FVFSIGRVSNP 402 human
NP_001093829 364 KRSRIPIFKADRPFIFFLREPNTA-FVFSIGRVLNP 398 cattle

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