Domain ID e5tcr21

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  • A: a+b two layers
  • X: Alpha-lytic protease prodomain-like
  • H: Ring-building motif I in type III secretion system
  • T: Ring-building motif I in type III secretion system
  • F: PrgH
UID: 001935835
Type: Automatic domain
Parent: e3gr1A1
Range: 2:171-223
PDB: 5tcr
PDB Description: Protein PrgH
UniProt: P41783
Species:

Structure of domain e5tcr21

Domains in the same chain:

e5tcr21 2:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr23 2:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr22 2:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system

Domains in the same PDB:

e5tcr02 0:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr01 0:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr03 0:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr12 1:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcr11 1:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr102 10:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr103 10:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr101 10:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr21 2:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr23 2:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr22 2:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr31 3:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcr32 3:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr41 4:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr43 4:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr42 4:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr51 5:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcr52 5:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr63 6:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr62 6:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr61 6:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr72 7:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcr71 7:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr82 8:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr81 8:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr83 8:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcr91 9:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcr92 9:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcra1 a:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcra2 a:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrA6 A:34-103 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrA5 A:104-171 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrA3 A:172-216,A:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrA4 A:301-557 secretin domain secretin domain secretin domain
e5tcrb2 b:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrb1 b:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrb3 b:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrB4 B:34-103 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrB3 B:104-171 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrB2 B:172-216,B:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrB1 B:301-557 secretin domain secretin domain secretin domain
e5tcrc1 c:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrc2 c:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrC3 C:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrC2 C:172-216,C:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrC1 C:301-557 secretin domain secretin domain secretin domain
e5tcrd1 d:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrd2 d:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrd3 d:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrD3 D:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrD2 D:172-216,D:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrD1 D:301-557 secretin domain secretin domain secretin domain
e5tcre1 e:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcre2 e:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrE3 E:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrE2 E:172-216,E:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrE1 E:301-557 secretin domain secretin domain secretin domain
e5tcrf2 f:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrf1 f:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrf3 f:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrF3 F:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrF2 F:172-216,F:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrF1 F:301-557 secretin domain secretin domain secretin domain
e5tcrg1 g:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrg2 g:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrG3 G:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrG2 G:172-216,G:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrG1 G:301-557 secretin domain secretin domain secretin domain
e5tcrh2 h:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrh1 h:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrh3 h:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrH3 H:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrH2 H:172-216,H:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrH1 H:301-557 secretin domain secretin domain secretin domain
e5tcri1 i:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcri2 i:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrI3 I:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrI2 I:172-216,I:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrI1 I:301-557 secretin domain secretin domain secretin domain
e5tcrj3 j:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrj1 j:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrj2 j:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrJ3 J:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrJ2 J:172-216,J:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrJ1 J:301-557 secretin domain secretin domain secretin domain
e5tcrk2 k:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrk1 k:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrK3 K:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrK2 K:172-216,K:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrK1 K:301-557 secretin domain secretin domain secretin domain
e5tcrl1 l:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrl3 l:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrl2 l:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrL3 L:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrL2 L:172-216,L:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrL1 L:301-557 secretin domain secretin domain secretin domain
e5tcrm2 m:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrm1 m:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrM3 M:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrM2 M:172-216,M:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrM1 M:301-557 secretin domain secretin domain secretin domain
e5tcrn3 n:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrn1 n:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrn2 n:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrN3 N:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrN2 N:172-216,N:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrN1 N:301-557 secretin domain secretin domain secretin domain
e5tcro2 o:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcro1 o:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrO3 O:34-171 N0 domain in phage tail proteins and secretins-like N0 domain in phage tail proteins and secretins N0 domain in phage tail proteins and secretins
e5tcrO2 O:172-216,O:267-300 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrO1 O:301-557 secretin domain secretin domain secretin domain
e5tcrp2 p:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrp1 p:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrp3 p:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrP2 P:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrP1 P:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrq1 q:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrq2 q:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrQ2 Q:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrQ1 Q:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrQ3 Q:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrr1 r:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrr3 r:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrr2 r:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrR1 R:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrR2 R:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrs1 s:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrs2 s:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrS3 S:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrS1 S:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrS2 S:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrt2 t:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrt3 t:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrt1 t:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrT1 T:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrT2 T:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcru1 u:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcru2 u:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrU1 U:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrU2 U:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrU3 U:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrv2 v:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrv3 v:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrv1 v:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrV2 V:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrV1 V:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrw2 w:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrw1 w:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrW1 W:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrW3 W:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrW2 W:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrx1 x:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrx3 x:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrx2 x:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrX2 X:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrX1 X:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcry1 y:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcry2 y:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrY2 Y:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrY1 Y:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrY3 Y:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrz2 z:20-81 Alpha-lytic protease prodomain-like Ring-building motif II in type III secretion system Ring-building motif II in type III secretion system
e5tcrz1 z:82-203 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrZ1 Z:171-223 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrZ3 Z:224-294 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system
e5tcrZ2 Z:295-364 Alpha-lytic protease prodomain-like Ring-building motif I in type III secretion system Ring-building motif I in type III secretion system