| Purity | 10-20%caspase-9proteinbygelanalysis.AlsocontainsE.coliproteins.Approximately,0.8-2μgtotalprotein/unitofactivity. | 
| Source | Human | 
| SpecificActivity | Oneunitoftherecombinantcaspase-9istheenzymeactivitythatcleaves1nmolofthecaspasesubstrateLEHD-pNA(pNA:pnitroanaline)perhourat37°Catsaturatedsubstrateconcentrations. | 
| EntrezGeneNumber |  | 
| EntrezGeneSummary | Thisgeneencodesamemberofthecysteine-asparticacidprotease(caspase)family.Sequentialactivationofcaspasesplaysacentralroleintheexecution-phaseofcellapoptosis.Caspasesexistasinactiveproenzymeswhichundergoproteolyticprocessingatconservedasparticresiduestoproducetwosubunits,largeandsmall,thatdimerizetoformtheactiveenzyme.ThisproteinisprocessedbycaspaseAPAF1;thisstepisthoughttobeoneoftheearliestinthecaspaseactivationcascade.Alternativesplicingresultsintwotranscriptvariantswhichencodedifferentisoforms. | 
| GeneSymbol | CASP9CASP-9ICE-LAP6MCH6APAF3CASPASE-9cOTTHUMP00000044594APAF-3EC3.4.22.62[Contains:Caspase-9subunitp35Caspase-9subunitp10].
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| UniProtNumber |  | 
| UniProtSummary | FUNCTION:SwissProt:P55211#Isoform2lacksactivityisandominant-negativeinhibitorofcaspase-9. SIZE:416aminoacids;46281Da
 SUBUNIT:Heterotetramerthatconsistsoftwoanti-parallelarrangedheterodimers,eachoneformedbya35kDa(p35)anda10kDa(p10)subunit.Caspase-9andAPAF1bindtoeachotherviatheirrespectiveNH2-terminalCED-3homologousdomainsinthepresenceofcytochromeCandATP.InteractswiththeinhibitorsBIRC2,BIRC4,BIRC5andBIRC7.
 TISSUESPECIFICITY:Ubiquitous,withhighestexpressionintheheart,moderateexpressioninliver,skeletalmuscle,andpancreas.Lowlevelsinallothertissues.
 PTM:CleavagesatAsp-315bygranzymeBandatAsp-330bycaspase-3generatethetwoactivesubunits.Caspase-8and-10canalsobeinvolvedintheseprocessingevents.
 SIMILARITY:SwissProt:P55211##BelongstothepeptidaseC14family.&Contains1CARDdomain.
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