000878277 001__ 878277 000878277 005__ 20240627202006.0 000878277 0247_ $$2doi$$a10.1016/j.pbiomolbio.2020.07.004 000878277 0247_ $$2ISSN$$a0079-6107 000878277 0247_ $$2ISSN$$a1873-1732 000878277 0247_ $$2Handle$$a2128/27392 000878277 0247_ $$2altmetric$$aaltmetric:87192387 000878277 0247_ $$2pmid$$a32735944 000878277 0247_ $$2WOS$$aWOS:000632013800005 000878277 037__ $$aFZJ-2020-02740 000878277 082__ $$a570 000878277 1001_ $$0P:(DE-Juel1)177870$$aBeckers, Maximilian$$b0$$ufzj 000878277 245__ $$aStructural interpretation of cryo-EM image reconstructions 000878277 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2021 000878277 3367_ $$2DRIVER$$aarticle 000878277 3367_ $$2DataCite$$aOutput Types/Journal article 000878277 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1719493203_19429 000878277 3367_ $$2BibTeX$$aARTICLE 000878277 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000878277 3367_ $$00$$2EndNote$$aJournal Article 000878277 520__ $$aThe productivity of single-particle cryo-EM as a structure determination method has rapidly increased as many novel biological structures are being elucidated. The ultimate result of the cryo-EM experiment is an atomic model that should faithfully represent the computed image reconstruction. Although the principal approach of atomic model building and refinement from maps resembles that of the X-ray crystallographic methods, there are important differences due to the unique properties resulting from the 3D image reconstructions. In this review, we discuss the practiced work-flow from the cryo-EM image reconstruction to the atomic model. We give an overview of (i) resolution determination methods in cryo-EM including local and directional resolution variation, (ii) cryo-EM map contrast optimization including complementary map types that can help in identifying ambiguous density features, (iii) atomic model building and (iv) refinement in various resolution regimes including (v) their validation and (vi) discuss differences between X-ray and cryo-EM maps. Based on the methods originally developed for X-ray crystallography, the path from 3D image reconstruction to atomic coordinates has become an integral and important part of the cryo-EM structure determination work-flow that routinely delivers atomic models. 000878277 536__ $$0G:(DE-HGF)POF4-5352$$a5352 - Understanding the Functionality of Soft Matter and Biomolecular Systems (POF4-535)$$cPOF4-535$$fPOF IV$$x0 000878277 536__ $$0G:(DE-HGF)POF4-5241$$a5241 - Molecular Information Processing in Cellular Systems (POF4-524)$$cPOF4-524$$fPOF IV$$x1 000878277 588__ $$aDataset connected to CrossRef 000878277 7001_ $$0P:(DE-Juel1)179550$$aMann, Daniel$$b1 000878277 7001_ $$0P:(DE-Juel1)173949$$aSachse, Carsten$$b2$$eCorresponding author 000878277 773__ $$0PERI:(DE-600)1498578-0$$a10.1016/j.pbiomolbio.2020.07.004$$gp. 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