2026-09-19_00000025|medium|11SX

Cryo-EM structure of trimeric Nitrogenase MoFe protein from Methanosarcina acetivorans; Electron microscopy 3.50Å
Protein #1 559 residues (92% resolved)

MWSHPQFEKGGGSGGGSGGGSWSHPQFEKSGMGAEIEDKQLIVDNILKVLPEKAARDRRKHIVVRDCAAEQHIEADDKVIPGILTNRGCAFAGTKGVVFGPIKDMVHLVHGPIGCAYFTWGTRRNLAKAEEGEDNYMNYSVCTDMKETDIVFGGEKKLKKAIDEVVKIFNPGAITICATCPVGLIGDDIESVAREAEEEHGIKVIPARCEGYRGVSQSAGHHIASNSLMEHLIGTEDIKDPTPFDINIFGEYNIGGDLWEIKPILEKIGYRIISSLTGDGSFHKISQAHQAKLSILLCHRSINYTNRMMEEKYGVPWLKVNYIGTKGTEKSLRKMAEFFDDPELTRKTEEVIAEEKAKYADEIERYREKLQGKTAFIYAGGSRSHHYINLFEELGMKVVVAGYQFAHRDDYEGRQIIPHIKEKALGSILEDVHYEREENFKPSINAERITELKEKIGLMDYEGLFPEMKDGTIVVDDLNHHETEFLVKALKPDIFCSGIKDKYWAQKIGVPSRQIHSYDYSGRYTGFSGVLNFARDIDMAIHSPTWRFINPPWKGEGAE

MWSHPQFEKGGGSGGGSGGGSWSHPQFEKSGMGAEIEDKQLIVDNILKVLPEKAARDRRKHIVVRDCAAEQHIEADDKVIPGILTNRGCAFAGTKGVVFGPIKDMVHLVHGPIGCAYFTWGTRRNLAKAEEGEDNYMNYSVCTDMKETDIVFGGEKKLKKAIDEVVKIFNPGAITICATCPVGLIGDDIESVAREAEEEHGIKVIPARCEGYRGVSQSAGHHIASNSLMEHLIGTEDIKDPTPFDINIFGEYNIGGDLWEIKPILEKIGYRIISSLTGDGSFHKISQAHQAKLSILLCHRSINYTNRMMEEKYGVPWLKVNYIGTKGTEKSLRKMAEFFDDPELTRKTEEVIAEEKAKYADEIERYREKLQGKTAFIYAGGSRSHHYINLFEELGMKVVVAGYQFAHRDDYEGRQIIPHIKEKALGSILEDVHYEREENFKPSINAERITELKEKIGLMDYEGLFPEMKDGTIVVDDLNHHETEFLVKALKPDIFCSGIKDKYWAQKIGVPSRQIHSYDYSGRYTGFSGVLNFARDIDMAIHSPTWRFINPPWKGEGAE
Protein #2 456 residues (97% resolved)

MLDYTPCEEVERSAITINPAKICQPIGAVYAALGVHNCMPHSHGSQGCLSYLRMCLSRHYREAALATTSSFSEGTAVFGGAANLKEALVNLTTVYQPEVIAIHTTCVAETIGDDVGVILEDVSAEELIDPSIKICAASTPSYVGTHITGYDNMVKSFVTTFASKSKPNGKLNIIPGFVEPADIREIKRILSIMGISSIVFPDTTDVFDAPLTKEHTFYPKGGTPIGDIEDSANSLGTIALCRMAGGAAAKILESRYKVPAKIGPTPIGIRNTDRFIMNAAKLANVAIPPELEDERGRLVDMMTDAHPHYHGKKVAIYGDPDILSGLTSLVLEMGMEPSVVLTGTQNSEFEKEIEALIGSEYPDADIISGGDLFMLHQIIKRKPVDLLIGNTYGKFISRAEDVPLVRVGFPIMDRANLHYFPIMGYAGAARLVERIGNTLLDRKDRDAPDWLLETIQ

MLDYTPCEEVERSAITINPAKICQPIGAVYAALGVHNCMPHSHGSQGCLSYLRMCLSRHYREAALATTSSFSEGTAVFGGAANLKEALVNLTTVYQPEVIAIHTTCVAETIGDDVGVILEDVSAEELIDPSIKICAASTPSYVGTHITGYDNMVKSFVTTFASKSKPNGKLNIIPGFVEPADIREIKRILSIMGISSIVFPDTTDVFDAPLTKEHTFYPKGGTPIGDIEDSANSLGTIALCRMAGGAAAKILESRYKVPAKIGPTPIGIRNTDRFIMNAAKLANVAIPPELEDERGRLVDMMTDAHPHYHGKKVAIYGDPDILSGLTSLVLEMGMEPSVVLTGTQNSEFEKEIEALIGSEYPDADIISGGDLFMLHQIIKRKPVDLLIGNTYGKFISRAEDVPLVRVGFPIMDRANLHYFPIMGYAGAARLVERIGNTLLDRKDRDAPDWLLETIQ
Non polymer #3 CLF

InChI=1S/8Fe.7S

[S]12[Fe]3[S]4[Fe]1S567([Fe]2[S]3[Fe]45)[Fe]8[S]9[Fe]6[S]1[Fe]9[S]8[Fe]71
Non polymer #4 ICS

InChI=1S/C.7Fe.Mo.9S

C12345[Fe]67S[Fe]18[S]9[Fe]21S[Fe]32[S]6[Fe]3[S]7[Fe]4([S]23)S[Fe]52[S]8[Mo]9[S]12
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Reference