PDBx/mmCIF
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Data Category struct_conn

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General

Category name
struct_conn
Required in PDB entries
no
Category group membership
struct_group
Used in current PDB entries
Yes, in about 66.0 % of entries

Category Relationship Diagrams

70
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70
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Category Description 

               Data items in the STRUCT_CONN category record details about
               the connections between portions of the structure. These can be
               hydrogen bonds, salt bridges, disulfide bridges and so on.

               The STRUCT_CONN_TYPE records define the criteria used to
               identify these connections.

Additional Descriptive Information for Depositors 

 Nonstandard residue linkage. The LINK records specify connectivity between residues that is not implied by the primary structure. Connectivity is expressed in terms of the atom names. This record supplements information given in CONECT records.

Category Example

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    loop_
    _struct_conn.id
    _struct_conn.conn_type_id
    _struct_conn.ptnr1_label_comp_id
    _struct_conn.ptnr1_label_asym_id
    _struct_conn.ptnr1_label_seq_id
    _struct_conn.ptnr1_label_atom_id
    _struct_conn.ptnr1_role
    _struct_conn.ptnr1_symmetry
    _struct_conn.ptnr2_label_comp_id
    _struct_conn.ptnr2_label_asym_id
    _struct_conn.ptnr2_label_seq_id
    _struct_conn.ptnr2_label_atom_id
    _struct_conn.ptnr2_role
    _struct_conn.ptnr2_symmetry
    _struct_conn.details
      C1  saltbr  ARG  A  87 NZ1 positive 1_555 GLU  A  92  OE1
          negative 1_555  .
      C2  hydrog  ARG  B 287 N   donor    1_555 GLY  B 292  O
          acceptor 1_555  .
    # - - - - data truncated for brevity - - - -

Key Data Items

Category Data Items

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