Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyLeukotriene A4 hydrolase N-terminal domain 8038930 3000390 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyMetalloproteases (zincins), catalytic domain 8038934 3001975 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyARM repeat-like 8038928 3000116 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APeptidase_M1_2e1hs6A1 A: beta sandwichesX: Baculovirus p35 protein-related (From Topology)H: Baculovirus p35 protein-related (From Topology)T: Baculovirus p35 protein-relatedF: Peptidase_M1_2ECOD (1.6)
ALeuk-A4-hydro_Ce1hs6A2 A: alpha superhelicesX: Repetitive alpha hairpinsH: ARM repeat (From Topology)T: ARM repeatF: Leuk-A4-hydro_CECOD (1.6)
APeptidase_M1_1e1hs6A3 A: mixed a+b and a/bX: Zincin-likeH: Metalloproteases (zincins) catalytic domain (From Topology)T: Metalloproteases (zincins) catalytic domainF: Peptidase_M1_1ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF09127Leukotriene A4 hydrolase, C-terminal (Leuk-A4-hydro_C)Leukotriene A4 hydrolase, C-terminal- Repeat
PF01433Peptidase family M1 domain (Peptidase_M1)Peptidase family M1 domainMembers of this family are aminopeptidases. The members differ widely in specificity, hydrolysing acidic, basic or neutral N-terminal residues. This family includes leukotriene-A4 hydrolase Swiss:P09960, this enzyme also has an aminopeptidase activ ...Members of this family are aminopeptidases. The members differ widely in specificity, hydrolysing acidic, basic or neutral N-terminal residues. This family includes leukotriene-A4 hydrolase Swiss:P09960, this enzyme also has an aminopeptidase activity [1].
Domain
PF17900Peptidase M1 N-terminal domain (Peptidase_M1_N)Peptidase M1 N-terminal domainThis domain is found at the N-terminus of aminopeptidases from the M1 family.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
LEUKOTRIENE A-4 HYDROLASE

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

ChainsEnzyme NameDescriptionCatalytic Residues
leukotriene-A4 hydrolase  M-CSA #166

Leukotriene A4 hydrolase/ Aminopeptidase is involved in the immune response in humans, and is unique in its ability to catalyse two very different reactions at the active site. Not only is it able to catalyse the hydrolysis of the epoxide Leukotriene A4 to produce the potent immune activator Leukotriene B4, it is also able to catalyse the hydrolysis of peptide bonds, acting on the first peptide bond after the N terminal. One active site is enough to confer such variety of function, so the enzyme represents a yardstick of evolutionary efficiency seldom reached in nature. It displays a characteristic Zinc binding motif at the active site (GXMEN) which places it in the family M1 of Zinc metalloproteases.

Defined by 7 residues: GLU:A-272 [auth A-271]HIS:A-296 [auth A-295]GLU:A-297 [auth A-296]HIS:A-300 [auth A-299]GLU:A-319 [auth A-318]ASP:A-376 [auth A-375]TYR:A-384 [auth A-383]
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