Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1t7da_ All beta proteins LexA/Signal peptidase LexA/Signal peptidase Type 1 signal peptidase Type 1 signal peptidase (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Bd1t7db_ All beta proteins LexA/Signal peptidase LexA/Signal peptidase Type 1 signal peptidase Type 1 signal peptidase (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyLexA/Signal peptidase-like 8043153 3000103 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyLexA/Signal peptidase-like 8043153 3000103 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APeptidase_S24_1e1t7dA2 A: beta barrelsX: SH3H: LexA/Signal peptidase (From Topology)T: LexA/Signal peptidaseF: Peptidase_S24_1ECOD (1.6)
BPeptidase_S24_1e1t7dB1 A: beta barrelsX: SH3H: LexA/Signal peptidase (From Topology)T: LexA/Signal peptidaseF: Peptidase_S24_1ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A2.10.109.10 Mainly Beta Ribbon Umud Fragment, subunit A Umud Fragment, subunit ACATH (4.3.0)
A2.170.230.10 Mainly Beta Beta Complex Signal Peptidase I Chain: A, domain 2CATH (4.3.0)
B2.10.109.10 Mainly Beta Ribbon Umud Fragment, subunit A Umud Fragment, subunit ACATH (4.3.0)
B2.170.230.10 Mainly Beta Beta Complex Signal Peptidase I Chain: A, domain 2CATH (4.3.0)

Membrane Protein Annotation: OPM OPM Database Homepage

ChainsExternal LinkTypeClassSuperfamilyFamily
A, B
OPMTransmembraneAlpha-helical polytopicPeptidase SFPeptidase S26

Protein Modification Annotation

Modified Residue(s)
ChainResidue(s)Description
C, D
5PG Parent Component: GLY

C, D
DAL RESIDAA0111 , AA0191

PSI-MOD :  meso-lanthionine MOD:00120 , D-alanine (Ala) MOD:00198 , D-alanine (Ser) MOD:00858 , D-alanine MOD:00862
C, D
DSE RESIDAA0111 , AA0191

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
signal peptidase I  M-CSA #635

Escherichia coli type I signal peptidase is a membrane-bound serine endopeptidase that cleaves the amino-terminal signal sequence from secretory proteins and some membrane proteins. Evolutionarily the enzyme belongs to the protease clan SF and the protease family S26.

Defined by 4 residues: SER:B-15 [auth B-88]SER:B-17 [auth B-90]LYS:B-72 [auth B-145]SER:B-205 [auth B-278]
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