Entry Clone Accession:
Entry Clone Source: Invitrogen
SGC Construct ID: MTHFRA-c042
Protein Region: D38-N644
Vector: pFB-CT10HF-LIC
Tag: C-TEV;C-10HIS;C-FLAG
Host: DH10Bac
Sequence (with tag(s)): MDPERHERLREKMRRRLESGDKWFSLEFFPPRTAEGAVNLISRFDRMAAGGPLYIDVTWHPAGDPGSDKETSSMMIASTAVNYCGLETILHMTCCRQRLEEITGHLHKAKQLGLKNIMALRGDPIGDQWEEEEGGFNYAVDLVKHIRSEFGDYFDICVAGYPKGHPEAGSFEADLKHLKEKVSAGADFIITQLFFEADTFFRFVKACTDMGITCPIVPGIFPIQGYHSLRQLVKLSKLEVPQEIKDVIEPIKDNDAAIRNYGIELAVSLCQELLASGLVPGLHFYTLNREMATTEVLKRLGMWTEDPRRPLPWALSAHPKRREEDVRPIFWASRPKSYIYRTQEWDEFPNGRWGNSSSPAFGELKDYYLFYLKSKSPKEELLKMWGEELTSEASVFEVFVLYLSGEPNRNGHKVTCLPWNDEPLAAETSLLKEELLRVNRQGILTINSQPNINGKPSSDPIVGWGPSGGYVFQKAYLEFFTSRETAEALLQVLKKYELRVNYHLVNVKGENITNAPELQPNAVTWGIFPGREIIQPTVVDPVSFMFWKDEAFALWIEQWGKLYEEESPSRTIIQYIHDNYFLVNLVDNDFPLDNCLWQVVEDTLELLNAENLYFQSHHHHHHHHHHDYKDDDDK
Sequence after tag cleavage: MDPERHERLREKMRRRLESGDKWFSLEFFPPRTAEGAVNLISRFDRMAAGGPLYIDVTWHPAGDPGSDKETSSMMIASTAVNYCGLETILHMTCCRQRLEEITGHLHKAKQLGLKNIMALRGDPIGDQWEEEEGGFNYAVDLVKHIRSEFGDYFDICVAGYPKGHPEAGSFEADLKHLKEKVSAGADFIITQLFFEADTFFRFVKACTDMGITCPIVPGIFPIQGYHSLRQLVKLSKLEVPQEIKDVIEPIKDNDAAIRNYGIELAVSLCQELLASGLVPGLHFYTLNREMATTEVLKRLGMWTEDPRRPLPWALSAHPKRREEDVRPIFWASRPKSYIYRTQEWDEFPNGRWGNSSSPAFGELKDYYLFYLKSKSPKEELLKMWGEELTSEASVFEVFVLYLSGEPNRNGHKVTCLPWNDEPLAAETSLLKEELLRVNRQGILTINSQPNINGKPSSDPIVGWGPSGGYVFQKAYLEFFTSRETAEALLQVLKKYELRVNYHLVNVKGENITNAPELQPNAVTWGIFPGREIIQPTVVDPVSFMFWKDEAFALWIEQWGKLYEEESPSRTIIQYIHDNYFLVNLVDNDFPLDNCLWQVVEDTLELLNAENLYFQ
DNA Sequence: TTAAGAAGGAGATATACTATGGACCCTGAGCGGCATGAGAGACTCCGGGAGAAGATGAGGCGGCGATTGGAATCTGGTGACAAGTGGTTCTCCCTGGAATTCTTCCCTCCTCGAACTGCTGAGGGAGCTGTCAATCTCATCTCAAGGTTTGACCGGATGGCAGCAGGTGGCCCCCTCTACATAGACGTGACCTGGCACCCAGCAGGTGACCCTGGCTCAGACAAGGAGACCTCCTCCATGATGATCGCCAGCACCGCCGTGAACTACTGTGGCCTGGAGACCATCCTGCACATGACCTGCTGCCGTCAGCGCCTGGAGGAGATCACGGGCCATCTGCACAAAGCTAAGCAGCTGGGCCTGAAGAACATCATGGCGCTGCGGGGAGACCCAATAGGTGACCAGTGGGAAGAGGAGGAGGGAGGCTTCAACTACGCAGTGGACCTGGTGAAGCACATCCGAAGTGAGTTTGGTGACTACTTTGACATCTGTGTGGCAGGTTACCCCAAAGGCCACCCCGAAGCAGGGAGCTTTGAGGCTGACCTGAAGCACTTGAAGGAGAAGGTGTCTGCGGGAGCCGATTTCATCATCACGCAGCTTTTCTTTGAGGCTGACACATTCTTCCGCTTTGTGAAGGCATGCACCGACATGGGCATCACTTGCCCCATCGTCCCCGGGATCTTTCCCATCCAGGGCTACCACTCCCTTCGGCAGCTTGTGAAGCTGTCCAAGCTGGAGGTGCCACAGGAGATCAAGGACGTGATTGAGCCAATCAAAGACAACGATGCTGCCATCCGCAACTATGGCATCGAGCTGGCCGTGAGCCTGTGCCAGGAGCTTCTGGCCAGTGGCTTGGTGCCAGGCCTCCACTTCTACACCCTCAACCGCGAGATGGCTACCACAGAGGTGCTGAAGCGCCTGGGGATGTGGACTGAGGACCCCAGGCGTCCCCTACCCTGGGCTCTCAGTGCCCACCCCAAGCGCCGAGAGGAAGATGTACGTCCCATCTTCTGGGCCTCCAGACCAAAGAGTTACATCTACCGTACCCAGGAGTGGGACGAGTTCCCTAACGGCCGCTGGGGCAATTCCTCTTCCCCTGCCTTTGGGGAGCTGAAGGACTACTACCTCTTCTACCTGAAGAGCAAGTCCCCCAAGGAGGAGCTGCTGAAGATGTGGGGGGAGGAGCTGACCAGTGAAGCAAGTGTCTTTGAAGTCTTTGTTCTTTACCTCTCGGGAGAACCAAACCGGAATGGTCACAAAGTGACTTGCCTGCCCTGGAACGATGAGCCCCTGGCGGCTGAGACCAGCCTGCTGAAGGAGGAGCTGCTGCGGGTGAACCGCCAGGGCATCCTCACCATCAACTCACAGCCCAACATCAACGGGAAGCCGTCCTCCGACCCCATCGTGGGCTGGGGCCCCAGCGGGGGCTATGTCTTCCAGAAGGCCTACTTAGAGTTTTTCACTTCCCGCGAGACAGCGGAAGCACTTCTGCAAGTGCTGAAGAAGTACGAGCTCCGGGTTAATTACCACCTTGTCAATGTGAAGGGTGAAAACATCACCAATGCCCCTGAACTGCAGCCGAATGCTGTCACTTGGGGCATCTTCCCTGGGCGAGAGATCATCCAGCCCACCGTAGTGGATCCCGTCAGCTTCATGTTCTGGAAGGACGAGGCCTTTGCCCTGTGGATTGAGCAGTGGGGAAAGCTGTATGAGGAGGAGTCCCCGTCCCGCACCATCATCCAGTACATCCACGACAACTACTTCCTGGTCAACCTGGTGGACAATGACTTCCCACTGGACAACTGCCTCTGGCAGGTGGTGGAAGACACATTGGAGCTTCTCAACGCAGAGAACCTCTACTTCCAATCGCACCATCATCACCATCACCATCACCACCATGATTACAAGGATGACGACGATAAGTGAGGATCC
Procedure: Protein was expressed in insect cells in 6L Sf9 media (ThermoFisher), infected with 3mL/L P2 virus.
Procedure: Protein was purified by affinity (Ni-NTA, Qiagen) and size-exclusion (Superdex 200) chromatography, followed by cleavage of the C-terminal tag by His-tagged tobacco etch virus protease (1:20 mass ratio) overnight at 4°C and re-passage over Ni-NTA resin. Selenomethionine(SeMet)-derivatized proteins were expressed using SelenoMethionine Medium Complete (Molecular Dimensions) and purified as above.
Concentration: 21.0 mg/ml
Mass-spec Verification: yes
Crystallization: SeMet-derivatized and native HsMTHFR38-644 were concentrated to 15-20 mg/ml, and crystals were grown by siting drop vapour diffusion at 20°C, in mother liquor containing 0.1M Na citrate tribasic, 22.5% PEG4K, 5% 2-propanol.
Data Collection: Beamline: Dmnd I04-1; Resolution: 2.5 Å
Data Processing: X-ray diffraction data were collected at the Diamond Light Source and processed using XIA2. The HsMTHFR38-644 structure was solved by selenium multi-wavelength anomalous diffraction phasing using autoSHARP, and subjected to automated building with BUCCANEER.