TheProteinDataBank(PDB)isaglobaldatabasethatstoresthree-dimensionalstructuraldataoflargebiologicalmolecules,suchasproteinsandnucleicacids.Establishedin1971,itservesasacriticalresourceforresearchersinfieldslikestructuralbiology,biochemistry,anddrugdiscovery.ThePDBarchivesexperimentallydeterminedstructuresobtainedthroughmethodslikeX-raycrystallography,NMRspectroscopy,andcryo-electronmicroscopy.ScientistsworldwidecontributedatatothePDB,whichisfreelyaccessibletothepublic.ThedatabaseismanagedbyaninternationalorganizationcalledtheWorldwideProteinDataBank(wwPDB),ensuringstandardizeddataqualityandaccessibility.ResearchersusePDBdatatostudymolecularfunctions,interactions,andtoaidinthedevelopmentofnewmedicines.