2019-08-07 REL PDBe PDBe PDBe 2018-11-08 2019-08-07 2019-08-07 2019-08-07 National Research Foundation in South Africa Research Career Advancement Fellowship South Africa Cryo-EM informed directed evolution of Nitrilase 4 leads to a change in quaternary structure. Mulelu AE Woodward JD Mulelu AE Kirykowicz AM Woodward JD Cryo-EM and directed evolution reveal howArabidopsisnitrilase specificity is influenced by its quaternary structure. Commun Biol UK 2 260 260 2019 31341959 doi:10.1038/s42003-019-0505-4 2399-3642 EMD-0320 other EM volume
The wild-type protein
 EMD-4406 associated EM volume Arabidopsis thaliana NITRILASE 4 mutant Arabidopsis thaliana NITRILASE 4 mutant 0 1
Generated by directed evolution
Arabidopsis thaliana Escherichia coli BL21(DE3) pET-21b(+) 0.4 NITRILASE 4 mutant Arabidopsis thaliana Escherichia coli BL21(DE3) LEVO MSMQQETSHMTAAPQTNGHQIFPEIDMSAGDSSSIVRATVVQASTVFYDTPATLDKAERLLSEAAENGSQLVVFPEAFIGGYPRGSTFELAIGSTTAKGRDDFRKYHASAIDVPGPEVERLALMAKKYKVYLVMGVIEREGYTLYCTVLFFDSQGLFLGKHRKLMPTAAERCIWGFGDGSTIPVFDTPIGKIGAAICWENRMPSLRTAMYAKGIEIYCAPTADQRETWLASMTHIALEGGCFVLSANQFCRRKDYPSPPEYMFSGSEESLTPDSVVCAGGSSIISPLGIVLAGPNYRGEALITADLDLGDIARAKFDFDVVGHYSRPEVFSLNIREHPRKAVSFKTSKVMEDESVHHHHHH 3.5.5.1 helical filament 0.3 8.0 50.0 Tris-Hcl Tris 200.0 NaCl sodium chloride NEGATIVE Uranyl acetate Homemade COPPER 400 CARBON CONTINUOUS 15.0 GLOW DISCHARGE AIR FEI TECNAI 20 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2.1 0.5 0.5 50000. PHILIPS ROTATION HOLDER GATAN ULTRASCAN 4000 (4k x 4k) 1 50 1.0 10.0 1
The images were low-pass filtered to 20 A and normalised.
90 14.52459 -65.59083 C2 BACK PROJECTION 20.0 FSC 0.5 CUT-OFF SPIDER 21.10 IHRSR 10000 10000 EMAN Boxer was used in helical mode with 95% overlap Featureless cylinder NOT APPLICABLE SPIDER 21.10 IHRSR emd_4406.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 80 80 80 -40 -40 -40 80 80 80 328.80002 328.80002 328.80002 90.0 90.0 90.0 X Y Z -2.5709467 4.9610124 0.000000004074297 1.0 4.11 4.11 4.11 2.0 AUTHOR AtNIT4 R95T L169A S224Q filament