Entry
Name
HtrA2 peptidase;
high temperature requirement protein A2;
HtrA2;
Omi stress-regulated endoprotease;
serine proteinase OMI;
HtrA2 protease;
OMI/HtrA2 protease;
HtrA2/Omi;
Omi/HtrA2
Class
Hydrolases;
Acting on peptide bonds (peptidases);
Serine endopeptidases
BRITE hierarchy
Reaction(IUBMB)
Cleavage of non-polar aliphatic amino-acids at the P1 position, with a preference for Val, Ile and Met. At the P2 and P3 positions, Arg is selected most strongly with a secondary preference for other hydrophilic residues
Comment
This enzyme is upregulated in mammalian cells in response to stress induced by both heat shock and tunicamycin treatment [4]. It can induce apoptosis in a caspase-independent manner through its peptidase activity and in a caspase-dependent manner by disrupting the interaction between caspase and the inhibitor of apoptosis (IAP) [3]. Belongs in peptidase family S1C.
History
EC 3.4.21.108 created 2006
Orthology
K08669 HtrA serine peptidase 2
Genes
ORO : 101375505 101382419(HTRA2)
PKL : 118717574(HTRA2) 118726900
DRE : 100137109(htra2-14) 100149563 110438948 110438965 560917 797799 799791(htra2-7)
SANH : 107678491 107690150
MASI : 127412466 127414229
CCLU : 121547701 121552217
AANG : 118227649 118231742
AROT : 135254756 135259625
PSPA : 121315538 121331242
ARUT : 117409633 117420941
DSI : Dsimw501_GD20417(Dsim_GD20417)
HIS : 119650663 119650665 119653370
AALB : 109414079 115256087
CQU : CpipJ_CPIJ005160 CpipJ_CPIJ019291
PPAP : 129798065 129799514
TMOL : 138127030 138138716
AGRG : 126739416 126739657
CSET : 123321414 123322973
HAXR : 123672726 123673423
APLN : 108736222 108744581
PPYR : 116173013 116174078 116174361
BMAN : 114248093 114248094
DPL : KGM_208208 KGM_208209A
CFEL : 113374458 113382759
PMOO : 119575961 119591398
PMEO : 129599891 129599911
SHX : MS3_00005043(HTRA2_1)
CSAT : 104707036 104736749 104771198
EGR : 104415569 104417702 104429273
RARG : 115743838 115743843
AANS : 126798376 126800810
PCOX : 137722423 137745543
CAVE : 132171605 132171606
QLO : 115979360 115979955 115980370
SSPL : 121797426 121801255
PSOM : 113279085 113290163
TAES : 123086771 123091208 123096196
LPER : 127293991 127293993
LRD : 124699588 124699771 124699772
PVIR : 120643949 120686550
PAUA : 133887418 133900238
MUS : 103989835 135620438 135622746
ZOF : 122001036 122005320 122017557 122049217
SMO : SELMODRAFT_164697 SELMODRAFT_185147
» show all
Taxonomy
Reference
Authors
Srinivasula SM, Gupta S, Datta P, Zhang Z, Hegde R, Cheong N, Fernandes-Alnemri T, Alnemri ES.
Title
Inhibitor of apoptosis proteins are substrates for the mitochondrial serine protease Omi/HtrA2.
Journal
Reference
Authors
Savopoulos JW, Carter PS, Turconi S, Pettman GR, Karran EH, Gray CW, Ward RV, Jenkins O, Creasy CL.
Title
Expression, purification, and functional analysis of the human serine protease HtrA2.
Journal
Sequence
Reference
Authors
Martins LM, Turk BE, Cowling V, Borg A, Jarrell ET, Cantley LC, Downward J.
Title
Binding specificity and regulation of the serine protease and PDZ domains of HtrA2/Omi.
Journal
Sequence
Reference
Authors
Gray CW, Ward RV, Karran E, Turconi S, Rowles A, Viglienghi D, Southan C, Barton A, Fantom KG, West A, Savopoulos J, Hassan NJ, Clinkenbeard H, Hanning C, Amegadzie B, Davis JB, Dingwall C, Livi GP, Creasy CL
Title
Characterization of human HtrA2, a novel serine protease involved in the mammalian cellular stress response.
Journal
Sequence
Reference
Authors
Li W, Srinivasula SM, Chai J, Li P, Wu JW, Zhang Z, Alnemri ES, Shi Y.
Title
Structural insights into the pro-apoptotic function of mitochondrial serine protease HtrA2/Omi.
Journal
Sequence
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