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        <title>Composite map of collagenase H (E416Q mutant) from Hathewaya histolytica in complex with collagen model peptide (Pro-Hyp-Gly)12</title>
        <authors_list>
            <author>Oki H</author>
            <author>Kawahara K</author>
        </authors_list>
        <keywords>Collagenase, Hathewaya histolytica, Clostridium histolyticum, METAL BINDING PROTEIN</keywords>
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                    <author order="2">Takebe K</author>
                    <author ORCID="0009-0003-1759-3420" order="3">Bonsu A</author>
                    <author ORCID="0009-0008-0733-6590" order="4">Fujii K</author>
                    <author order="5">Masuda R</author>
                    <author order="6">Henderson N</author>
                    <author ORCID="0000-0003-2116-1498" order="7">Mima T</author>
                    <author order="8">Koide T</author>
                    <author ORCID="0000-0002-0601-402X" order="9">Moradi M</author>
                    <author ORCID="0000-0001-6410-9070" order="10">Matsushita O</author>
                    <author ORCID="0000-0002-8373-969X" order="11">Sakon J</author>
                    <author ORCID="0000-0003-3909-1512" order="12">Kawahara K</author>
                    <title>Bacterial collagenase harnesses collagen geometry for processive cleavage.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>17</volume>
                    <year>2026</year>
                    <external_references type="PUBMED">41927550</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-026-71099-3</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
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                <details>Cryo-EM structure of collagenase H (E416Q mutant) from Hathewaya histolytica in complex with collagen model peptide (Pro-Hyp-Gly)12</details>
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        <name>ColH-(POG)12 complex</name>
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                <name>ColH-(POG)12 complex</name>
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                        <macromolecule_id>2</macromolecule_id>
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                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
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                <enantiomer>LEVO</enantiomer>
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                    <string>GSVQNESKRYTVSYLKTLNYYDLVDLLVKTEIENLPDLFQYSSDAKEFYGNKTRMSFIMDEIGRRAPQYTEIDHKGIPTL
VEVVRAGFYLGFHNKELNEINKRSFKERVIPSILAIQKNPNFKLGTEVQDKIVSATGLLAGNETAPPEVVNNFTPILQDC
IKNIDRYALDDLKSKALFNVLAAPTYDITEYLRATKEKPENTPWYGKIDGFINELKKLALYGKINDNNSWIIDNGIYHIA
PLGKLHSNNKIGIETLTEVMKVYPYLSMQHLQSADQIKRHYDSKDAEGNKIPLDKFKKEGKEKYCPKTYTFDDGKVIIKA
GARVEEEKVKRLYWASKEVNSQFFRVYGIDKPLEEGNPDDILTMVIYNSPEEYKLNSVLYGYDTNNGGMYIEPEGTFFTY
EREAQESTYTLEELFRHQYTHYLQGRYAVPGQWGRTKLYDNDRLTWYEEGGAELFAGSTRTSGILPRKSIVSNIHNTTRN
NRYKLSDTVHSKYGASFEFYNYACMFMDYMYNKDMGILNKLNDLAKNNDVDGYDNYIRDLSSNYALNDKYQDHMQERIDN
YENLTVPFVADDYLVRHAYKNPNEIYSEISEVAKLKDAKSEVKKSQYFSTFTLRGSYTGGASKGKLEDQKAMNKFIDDSL
KKLDTYSWSGYKTLTAYFTNYKVDSSNRVTYDVVFHGYLPNEGDSKNSLPYGKINGTYKGTEKEKIKFSSEGSFDPDGKI
VSYEWDFGDGNKSNEENPEHSYDKVGTYTVKLKVTDDKGESSVSTTTAEIKDLSENKLPVIYMHVPKSGALNQKVVFYGK
GTYDPDGSIAGYQWDFGDGSDFSSEQNPSHVYTKKGEYTVTLRVMDSSGQMSEKTMKIKITDPVYPIGTEKEPNNSKETA
SGPIVPGIPVSGTIENTSDQDYFYFDVITPGEVKIDINKLGYGGATWVVYDENNNAVSYATDDGQNLSGKFKADKPGRYY
IHLYMFNGSYMPYRINIEGSVGR</string>
                    <external_references type="UNIPROTKB">Q46085</external_references>
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                <ec_number>3.4.24.3</ec_number>
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                <number_of_copies>3</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>P(HYP)GP(HYP)GP(HYP)GP(HYP)GP(HYP)GP(HYP)GP(HYP)GP(HYP)GP(HYP)GP(HYP)GP(HYP)GP
(HYP)G</string>
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                <name>CALCIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">4.0078e-05</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>CA</formula>
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            <ligand macromolecule_id="4">
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                    <theoretical units="MDa">6.5409e-05</theoretical>
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                <number_of_copies>1</number_of_copies>
                <formula>ZN</formula>
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                    <theoretical units="MDa">1.8015e-05</theoretical>
                </molecular_weight>
                <number_of_copies>74</number_of_copies>
                <formula>HOH</formula>
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                    <concentration units="mg/mL">1</concentration>
                    <buffer>
                        <ph>7.5</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
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                <single_particle_microscopy microscopy_id="1">
                    <microscope>JEOL CRYO ARM 300</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <nominal_defocus_min units="µm">0.7000000000000001</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.2</nominal_defocus_max>
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                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 (6k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">80.0</average_electron_dose_per_image>
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