Collagenase,Type4,FilteredCollagenase,Type4(Code:CLS-4),whichisfilteredthrougha0.22micronmembraneandlyophilizedinvials.Storeat2-8°C.≥160unitspermgdryweightSource:Clostridiumhistolyticum

I.U.B.:3.4.24.3

CollagenaseRawMaterialCertification 

Crudecollagenasepreparationscontainseveralisoformsoftwodifferentcollagenases,asulfhydrylprotease,clostripain,atrypsin-likeenzyme,andanaminopeptidase.Thiscombinationofcollagenolyticandproteolyticactivitiesiseffectiveatbreakingdownintercellularmatrices,theessentialpartoftissuedissociation.OnecomponentofthecomplexisahydrolyticenzymewhichdegradesthehelicalregionsinnativecollagenpreferentiallyattheY-GlybondinthesequencePro-Y-Gly-Pro,whereYismostfrequentlyaneutralaminoacid.ThiscleavageyieldsproductssusceptIBLetofurtherpeptidasedigestion.Crudecollagenaseisinhibitedbymetalchelatingagentssuchascysteine,EDTAoro-phenanthrolinebutnotDFP.Itisalsoinhibitedbyα2-macroglobulin,alargeplasmaglycoprotein.Ca²⁺isrequiredforenzymeactivity.Particularenzymaticprofilesofeachcollagenasehavebeencorrelatedwiththetissuesfromwhichthecellsforstudywereobtained(orwiththeusestowhichthecellsareput)andasaresultofthecorrelationsseveraltypesofcrudecollagenaseshavebeenestablishedbyWorthington:Types1,2,3,and4.

•Type1crudecollagenasehastheoriginalbalanceofcollagenase,caseinase,clostripainandtrypticactivities.
•Type2containshigherrelativelevelsofproteaseactivity,particularlyclostripain.
•Type3containslowestlevelsofsecondaryproteases.
•Type4isdesignedtobeespeciallylowintrypticactivitytolimitdamagetomembraneproteinsandreceptors.
•Purifiedcollagenase,Code:CLSPA,containsminimalsecondaryproteolyticactivitiesalongwithhighcollagenaseactivity.

NEW!AnimalOriginFreeTypesAFA,AFBandAFC,STZ1,andSTZ2collagenasesarederivedfromculturesgrowninmediumcompletelydevoidofanimalbasedcomponentsanddesignedforbioprocessingapplicationswhereintroductionofpotentialanimalderivedpathogensmustbeprevented.LevelsofsecondaryproteasesaresimilartoTypes1and2collagenase. • CLSAFA istheoriginalAFAgradedesignedtohavecollagenaseandsecondaryproteasessimilartoTypes1and2collagenase. • CLSAFB containshighercollagenaseandcaseinaseactivitiesthanCLSAFA. • CLSAFC hasespeciallylowtrypticactivitysimilartoType4collagenase. • STZ1&STZ2,0.22μfilteredSTEMxyme®AOFCollagenase/NeutralProtease(Dispase®)blendsforprimaryandstemcellisolation.

Worthingtonalsooffers0.22µmfilteredpreparationsofeachtypeinpre-packagedformfordirectreconstitutionanduseincellisolationandcultureprocedures.Correlationsbetweenenzymetypeandeffectivenesswithdifferenttissueshavebeengood,butnotperfect,dueinparttothevariableparametersofuse.Neverthelessmostresearchersconsiderthetissue-typingofcrudecollagenaselotstobeavaluableservice.AdetaileddescriptionoftheWorthingtoncollagenaseandcontaminantassayscanbefoundintheWorthingtonEnzymeManual.Inaddition,tissuespecificreferencesanddetailedisolationconditionscanbefoundintheWorthingtonTissueDissociationGuide.

ThecollagenaseassayisamodificationofMandlwhereincollagenaseisincubatedforfivehourswithnativecollagenandtheextentofcollagenbreakdownisdeterminedusingtheMooreandStein,JBC,176,367,(1948)colorimetricninhydrinmethod.Aminoacidsreleasedareexpressedasmicromolesleucinepermilligramcollagenase.

Uses:Crudecollagenasesarewidelyusedinenzymaticprimarycellisolationandtissuedissociationprocedures.MostresearchersemployeithercrudecollagenasepreparationssuchasTypes1,2,3,and4orchromatographicallypurifiedcollagenase(Code:CLSPA);thelatterusuallycombinedwithsecondaryenzymessuchaselastase,hyaluronidase,etc.Forbestresults,theprecisemixtureofproteolyticactivitiesmustbetailoredtothetissuetobedissociated.Correlationsbetweentypeandeffectivenesswithdifferenttissueshavebeengood,butnotperfect,andmaybedependentpartlyonparametersofuseandobjectivesaswellaslot-to-lotvariations.FormoreinformationseetheCollagenaseSamplingPrograminformation.WorthingtonalsopublishesaTissueDissociationGuidewhichprovidesadditionalinformationregardingtheenzymesusedfortheseapplicationsandspecificreferencesfornumerouscellandtissuetypes.

UnitDefinition:OneUnitreleasesonemicromoleofL-leucineequivalentsfromcollagenin5hoursat37°C,pH7.5

RelatedProducts:

Collagen(CL)
DeoxyribonucleaseI(DP/D/DCLS/D2/DPFF/DPRF)
Elastase(ES/ESL/ESFF)
Hyaluronidase(HSE/HSEP)
NeutralProtease(Dispase,NPRO)
Papain(PAP/PAPL/PAP2)ProteinaseK(PROK)
Trypsin(TL/TRL/TRL3/TRLS/TRTPCK)
TrypsinInhibitors(LBI/OI/SI/SIC)

CellIsolationOptimizingSystem(CIT)
HepatocyteIsolationSystem(HIS)
NeonatalCardiomyocyteIsolationSystem(NCIS)
PapainDissociiationSystem(PDS/PDS2)

美国Worthington Biochemical Corporation成立于1947年，位于美国东海岸美丽海滨小城Lakewood, 有超过60年的生产经营历史，是世界上最主要的酶类供应商，是细胞分离酶的专家级公司。同时，也提供DNA/RNA纯化等分子生物学方面的产品。Worthington已经被购买和出售了好几次，并于1987年返回到沃辛顿家族。60年来，Worthington一直保持世界上高纯度酶的主要来源。