SupplementaryTable 1: Plasmids.

Plasmid Description Source or

reference

pBBR1MCS-2Kmr, lacZα(Kovach et al., 1995)

pAS50pBBR1MCS-2 with wild-type (wt)mamJ(encoding J426) ofThis work

Magnetospirillum gryphiswaldense strain MSR-1inserted

between EcoRI-XbaI restriction sites

pAS51pBBR1MCS-2 with mamJof Magnetospirillum strain CF-2This work

inserted between EcoRI-XbaI restriction sites

pAS53pBBR1MCS-2 with mamJ of Magnetospirillum strain CF-3This work

inserted between EcoRI-XbaI restriction sites

pAS55pBBR1MCS-2 with mamJ of M. magnetotacticumstrain MS-1This work

inserted between EcoRI-XbaI restriction sites

pAS87pBBR1MCS-2 with mamJ constructJΔ81-256 inserted betweenThis work

EcoRI-XbaI restriction sites

pAS88pBBR1MCS-2 with mamJ constructJΔ136-294 inserted betweenThis work

EcoRI-XbaI restriction sites

pAS90pBBR1MCS-2 with mamJ constructJ1-386 inserted betweenThis work

EcoRI-XbaI restriction sites

pAS91pBBR1MCS-2 with mamJ constructJ1-392 inserted betweenThis work

EcoRI-XbaI restriction sites

pAS92pBBR1MCS-2 with mamJ constructJΔ1-24 inserted betweenThis work

EcoRI-XbaI restriction sites

pAS93pBBR1MCS-2 with mamJ construct JΔ1-45 inserted betweenThis work

EcoRI-XbaI restriction sites

pAS94pBBR1MCS-2 with mamJ construct JΔ293-334 inserted betweenThis work

EcoRI-XbaI restriction sites

pAS95pBBR1MCS-2 with mamJconstructJΔ335-360 inserted betweenThis work

EcoRI-XbaI restriction sites

pASG5pBBR1MCS-2 with mamK-egfp inserted between This work

EcoRI-XbaI restriction sites

pBTCmr, Two-hybrid bait fusion expression vectorStratagene

pBT-LGF2Cmr, Two-hybrid control plasmidStratagene

pBT_MamJpBT with wt mamJof strain MSR-1inserted betweenEcoRI-XhoIThis work

restriction sites

pBT_MamKpBT with mamKof strain MSR-1inserted between EcoRI-XhoIThis work

restriction sites

pBT_J1-135pBT with mamJ construct J1-135 inserted between EcoRI-XhoIThis work

restriction sites

pTRGTcr, Two-hybrid target fusion expression vectorStratagene

pTRG-Gal11PTcr, Two-hybrid control plasmidStratagene

pTRG_MamJpTRG with wt mamJ of strain MSR-1inserted between EcoRI-XhoI This work

restriction sites

pTRG_MamKpTRG with mamK of strain MSR-1inserted between EcoRI-XhoIThis work

restriction sites

pTRG_MamApTRG with wt mamAof strain MSR-1inserted between EcoRI-SpeI This work

restriction sites

pTRG_MamEpTRG with wt mamE of strain MSR-1inserted between EcoRI-XhoI This work

restriction sites

pTRG_MamPpTRG with wt mamP of strain MSR-1inserted between EcoRI-XhoIThis work

restriction sites

pTRG_J1-135pTRG withmamJconstruct J1-135inserted between EcoRI-XhoIThis work

restriction sites

pTRG_J81-256pTRG withmamJconstruct J81-256 inserted between EcoRI-XhoIThis work

restriction sites

pTRG_J136-294pTRG with mamJ construct J136-294 inserted between EcoRI-XhoIThis work

restriction sites

pTRG_J295-334pTRG with mamJ construct J295-334inserted between EcoRI-XhoIThis work

restriction sites

pTRG_J330-368pTRG with mamJ construct J330-368inserted between EcoRI-XhoIThis work

restriction sites

pTRG_J361-399pTRG with mamJconstruct J361-399 inserted between EcoRI-XhoIThis work

restriction sites

SupplementaryTable2: Primer.

NameTarget/PositionaSequence (5’ - 3’)

ASmamJs_f mamJb/1-19GAATTCATGGCAAAAAACCGGCGTG

ASmamJe_r1 mamJb/1251-1281TCTAGACTATTTATTCTTATCTTCAGCATCACATTTC

ASmamJ-34AS_r mamJb/1157-1176TCTAGACTAAACGAGGCGGCCTCCCTTGA

ASmamJ-40AS_r mamJb/1139-1158TCTAGACTAGACCACTCCATCGACGAATC

ASmamJ-N24AS_f mamJb/73-90GAATTCATGGAGATTGTTTCGGTGACG

ASmamJ-N45AS_f mamJb/136-154GAATTCATGGGCGACATTTGGGCTAGCT

ASmamJ-ala_f mamJb/1003-1017TTCGAGTATTCGCAGACCCGCCAGCCTAAC

ASmamJ-ala_r mamJb/862-876GTTAGGCTGGCGGGTCTGCGAATACTCGAA

ASmamJ-lag_f mamJb/1081-1095GTGGCGGTCGAAGCCGGGGGGATTTTCGGC

ASmamJ-lag_r mamJb/988-1002GCCGAAAATCCCCCCGGCTTCGACCGCCAC

ASmamJ-otr_r mamJb/223-240AACCGGCGCGGGGTCCTGGGAACGAATGGG

ASmamJ-otr_f mamJb/769-780CCCATTCGTTCCCAGGACCCCGCGCCGGTT

ASmamJ-oad_r mamJb/388-405CAAATCCGCTGATGCAACGCTCGGCTGGACATCAATCAC

ASmamJ-oad_f mamJb/886-903GTGATTGATGTCCAGCCGAGCGTTGCATCAGCGGATTTG

ASmamJ-MS1_f mamJc/1-32GAATTCATGGCGAATAACCGGCGAGATCGCGACAAAGG

ASmamJ-MS1_r mamJc/1147-1173TCTAGACTATTTTTTCTTGCCCACCGTATCGCA

ASmamKs_f mamKb/4-18GAATTCGGAGGTCTTCATATGTGGATTGATCTGTTA

ASmamKe_r4 mamKb/1063-1080GATCGAGCCCTGACCGGAAACGTCACC

ASegfp_f11 egfpd/4-21TCCGGTCAGGGCTCGATCGTGAGCAAGGGCGAGGAG

ASegfp_r3 egfpd/697-720TCTAGATTACTTGTACAGCTCGTCCATGCC

ASmamJ_pBT_f mamJb/1-19GAATTCGATGGCAAAAAACCGGCGTG

ASmamJ_pTRG_f mamJb/1-19GAATTCAGATGGCAAAAAACCGGCGTG

ASmamJe_r9 mamJb/1251-1281CTCGAGCTATTTATTCTTATCTTCAGCATCACATTTC

ASmamK_pBT_f mamKb/1-21GAATTCCCTGTGGATTGATCTGTTAGCA

ASmamK_pTRG_f mamKb/1-21GAATTCTGTGGATTGATCTGTTAGCA

ASmamK_pTRG_r2 mamKb/1058-1082CTCGAGTCACTGACCGGAAACGTCACCAAGCT

ASmamA_pTRG_f mamAb/1-16GAATTCAGATGTCTAGCAAGCCGT

ASmamA_pTRG_r mamAb/640-654ACTAGTTTAGACGGCCGAACG

ASmamP_pTRG_f mamPb/1-16GAATTCAGATGAATAGCAAACTCG

ASmamP_pTRG_r mamPb/796-813CTCGAGCTAATTTATCACGTGGCA

ASmamE_pTRG_f mamEb/1-24GAATTCAGATGACCATGTTCAATGGTGATGTG

ASmamE_pTRG_r mamEb/2302-2319CTCGAGTCAAAGAACAATCCAGAA

ASglyTRG_f mamJb/1081-1095GAATTCAGGGGGGGATTTTCGGC

ASgly_r1 mamJb/1186-1197CTCGAGCTACCCGGCGACCAC

ASalaTRG_f mamJb/883-899GAATTCAGAGCGTTGCATCAGCGGA

ASala_r mamJb/988-1002CTCGAGCTAGGCTTCGACCGCCAC

ASlinkA-GTRG_f mamJb/988-1001GAATTCAGGTGGCGGTCGAAGC

ASlinkA-G_r mamJb/1094-1104CTCGAGCTATCCGGCGACGC

ASgluTRG_f mamJb/406-417GAATTCAGGAAACGGATGCC

ASglu_r mamJb/868-882CTCGAGCTACTCCGCCTGCGAATA

ASlarger_r mamJb/488-504CTCGAGCTATTCCGGCTCGACTTCGG

ASlargerTRG_f mamJb/241-255GAATTCAGCCTGTGCCGGTTGCC

ASN-termi_r mamJb/391-405CTCGAGCTACGGCTGGACATCAAT

Restriction sites are underlined. Additional nucleotides which do not bind to the template sequence during PCR.

aPosition within the target sequence.

bGene of Magnetospirillum gryphiswaldense strain MSR-1 (Sequence deposition number BX571797).

cGene of Magnetospirillum magnetotacticum strain MS-1(Sequence deposition number NZ_AAAP01003824.1).

dTargets the egfp gene from vector pEGFP-N3 (Sequence deposition number U57609).

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