data_3TM
# 
_chem_comp.id                                    3TM 
_chem_comp.name                                  "Oxidizided C-cluster" 
_chem_comp.type                                  NON-POLYMER 
_chem_comp.pdbx_type                             HETAIN 
_chem_comp.formula                               "Fe4 S4" 
_chem_comp.mon_nstd_parent_comp_id               ? 
_chem_comp.pdbx_synonyms                         ? 
_chem_comp.pdbx_formal_charge                    ? 
_chem_comp.pdbx_initial_date                     2026-05-06 
_chem_comp.pdbx_modified_date                    2026-08-07 
_chem_comp.pdbx_ambiguous_flag                   N 
_chem_comp.pdbx_release_status                   REL 
_chem_comp.pdbx_replaced_by                      ? 
_chem_comp.pdbx_replaces                         ? 
_chem_comp.formula_weight                        351.640 
_chem_comp.one_letter_code                       ? 
_chem_comp.three_letter_code                     3TM 
_chem_comp.pdbx_model_coordinates_details        ? 
_chem_comp.pdbx_model_coordinates_missing_flag   N 
_chem_comp.pdbx_ideal_coordinates_details        MetalCoord 
_chem_comp.pdbx_ideal_coordinates_missing_flag   N 
_chem_comp.pdbx_model_coordinates_db_code        6B6W 
_chem_comp.pdbx_subcomponent_list                ? 
_chem_comp.pdbx_processing_site                  RCSB 
_chem_comp.pdbx_pcm                              Y 
_chem_comp.pdbx_comp_type                        "metal-containing ligand" 
# 
loop_
_chem_comp_atom.comp_id 
_chem_comp_atom.atom_id 
_chem_comp_atom.alt_atom_id 
_chem_comp_atom.type_symbol 
_chem_comp_atom.charge 
_chem_comp_atom.pdbx_align 
_chem_comp_atom.pdbx_aromatic_flag 
_chem_comp_atom.pdbx_leaving_atom_flag 
_chem_comp_atom.pdbx_stereo_config 
_chem_comp_atom.pdbx_n_terminal_atom_flag 
_chem_comp_atom.pdbx_backbone_atom_flag 
_chem_comp_atom.pdbx_c_terminal_atom_flag 
_chem_comp_atom.model_Cartn_x 
_chem_comp_atom.model_Cartn_y 
_chem_comp_atom.model_Cartn_z 
_chem_comp_atom.pdbx_model_Cartn_x_ideal 
_chem_comp_atom.pdbx_model_Cartn_y_ideal 
_chem_comp_atom.pdbx_model_Cartn_z_ideal 
_chem_comp_atom.pdbx_component_atom_id 
_chem_comp_atom.pdbx_component_comp_id 
_chem_comp_atom.pdbx_ordinal 
3TM S1  S1  S  -2 1 N N N N N N 26.373 0.906  7.607 26.383 0.911  7.549 S1  3TM 1 
3TM S2  S2  S  -2 1 N N N N N N 23.051 1.258  5.884 23.078 1.227  5.898 S2  3TM 2 
3TM S3  S3  S  -2 1 N N N N N N 23.960 -1.964 8.157 23.728 -1.619 8.198 S3  3TM 3 
3TM S4  S4  S  -2 1 N N N N N N 24.036 3.849  8.415 24.004 3.605  8.519 S4  3TM 4 
3TM FE1 FE1 FE ?  0 N N N N N N 22.360 2.285  7.870 22.264 2.171  7.882 FE1 3TM 5 
3TM FE2 FE2 FE ?  0 N N N N N N 22.400 -0.569 9.174 22.216 -0.345 9.430 FE2 3TM 6 
3TM FE3 FE3 FE ?  0 N N N N N N 24.820 2.455  6.815 24.820 2.382  6.779 FE3 3TM 7 
3TM FE4 FE4 FE ?  0 N N N N N N 24.549 -0.273 6.718 24.646 -0.244 6.627 FE4 3TM 8 
# 
loop_
_chem_comp_bond.comp_id 
_chem_comp_bond.atom_id_1 
_chem_comp_bond.atom_id_2 
_chem_comp_bond.value_order 
_chem_comp_bond.pdbx_aromatic_flag 
_chem_comp_bond.pdbx_stereo_config 
_chem_comp_bond.pdbx_ordinal 
_chem_comp_bond.pdbx_metal_coordination_flag 
_chem_comp_bond.pdbx_metal_pi_flag 
3TM S1 FE3 SING N N 1 Y N 
3TM S1 FE4 SING N N 2 Y N 
3TM S2 FE1 SING N N 3 Y N 
3TM S2 FE3 SING N N 4 Y N 
3TM S2 FE4 SING N N 5 Y N 
3TM S3 FE2 SING N N 6 Y N 
3TM S3 FE4 SING N N 7 Y N 
3TM S4 FE1 SING N N 8 Y N 
3TM S4 FE3 SING N N 9 Y N 
# 
loop_
_pdbx_chem_comp_descriptor.comp_id 
_pdbx_chem_comp_descriptor.type 
_pdbx_chem_comp_descriptor.program 
_pdbx_chem_comp_descriptor.program_version 
_pdbx_chem_comp_descriptor.descriptor 
3TM InChI            InChI                1.06    InChI=1S/4Fe.4S              
3TM InChIKey         InChI                1.06    LJBDFODJNLIPKO-UHFFFAOYSA-N  
3TM SMILES_CANONICAL CACTVS               3.385   "[Fe]S[Fe]1S[Fe]S[Fe]S1"     
3TM SMILES           CACTVS               3.385   "[Fe]S[Fe]1S[Fe]S[Fe]S1"     
3TM SMILES_CANONICAL "OpenEye OEToolkits" 3.1.0.0 "S1[Fe][S]2[Fe]1S[Fe]2S[Fe]" 
3TM SMILES           "OpenEye OEToolkits" 3.1.0.0 "S1[Fe][S]2[Fe]1S[Fe]2S[Fe]" 
# 
_pdbx_chem_comp_identifier.comp_id           3TM 
_pdbx_chem_comp_identifier.type              "SYSTEMATIC NAME" 
_pdbx_chem_comp_identifier.program           "OpenEye OEToolkits" 
_pdbx_chem_comp_identifier.program_version   3.1.0.0 
_pdbx_chem_comp_identifier.identifier        "1$l^{3},3,5-trithia-2$l^{3},4$l^{3},6$l^{2}-triferrabicyclo[2.2.0]hexan-2-ylsulfanyliron" 
# 
loop_
_pdbx_chem_comp_atom_coordination.geometry_id 
_pdbx_chem_comp_atom_coordination.comp_id 
_pdbx_chem_comp_atom_coordination.atom_id 
_pdbx_chem_comp_atom_coordination.number 
_pdbx_chem_comp_atom_coordination.geometry_calculated 
_pdbx_chem_comp_atom_coordination.geometry_generic 
_pdbx_chem_comp_atom_coordination.geometry_abbr 
_pdbx_chem_comp_atom_coordination.provenance 
_pdbx_chem_comp_atom_coordination.representative_entry_id 
1 3TM FE3 4 tetrahedral tetrahedral TET MetalCoord 6B6W 
1 3TM FE3 4 tetrahedron tetrahedral TET FindGeo    7TSJ 
2 3TM FE4 4 tetrahedral tetrahedral TET MetalCoord 6B6W 
2 3TM FE4 4 tetrahedron tetrahedral TET FindGeo    6VWZ 
# 
loop_
_pdbx_chem_comp_atom_coordination_sphere.id 
_pdbx_chem_comp_atom_coordination_sphere.geometry_id 
_pdbx_chem_comp_atom_coordination_sphere.comp_id 
_pdbx_chem_comp_atom_coordination_sphere.atom_id 
_pdbx_chem_comp_atom_coordination_sphere.descriptor 
_pdbx_chem_comp_atom_coordination_sphere.provenance 
_pdbx_chem_comp_atom_coordination_sphere.representative_entry_id 
1 1 3TM FE3 "@TET{Fe,S,S,S,S}" MetalCoord 6B6W 
2 2 3TM FE4 "@TET{Fe,S,S,S,S}" MetalCoord 6B6W 
# 
loop_
_pdbx_chem_comp_pcm.pcm_id 
_pdbx_chem_comp_pcm.comp_id 
_pdbx_chem_comp_pcm.modified_residue_id 
_pdbx_chem_comp_pcm.type 
_pdbx_chem_comp_pcm.category 
_pdbx_chem_comp_pcm.polypeptide_position 
_pdbx_chem_comp_pcm.comp_id_linking_atom 
_pdbx_chem_comp_pcm.modified_residue_id_linking_atom 
_pdbx_chem_comp_pcm.uniprot_specific_ptm_accession 
_pdbx_chem_comp_pcm.uniprot_generic_ptm_accession 
_pdbx_chem_comp_pcm.position 
1 3TM CYS None "Metal coordination" "Any position" FE2 SG ? ? "Amino-acid side chain" 
2 3TM CYS None "Metal coordination" "Any position" FE1 SG ? ? "Amino-acid side chain" 
3 3TM CYS None "Metal coordination" "Any position" FE3 SG ? ? "Amino-acid side chain" 
4 3TM CYS None "Metal coordination" "Any position" FE4 SG ? ? "Amino-acid side chain" 
# 
loop_
_pdbx_chem_comp_audit.comp_id 
_pdbx_chem_comp_audit.action_type 
_pdbx_chem_comp_audit.date 
_pdbx_chem_comp_audit.processing_site 
3TM "Create component"   2026-05-06 RCSB 
3TM "Other modification" 2026-07-31 RCSB 
3TM "Initial release"    2026-08-12 RCSB 
# 
