Overview
The SLTBRG records specify salt bridges in the entry.
Record Format
COLUMNS DATA TYPE FIELD DEFINITION --------------------------------------------------------------------------------- 1 - 6 Record name "SLTBRG" 13 - 16 Atom atom1 First atom name. 17 Character altLoc1 Alternate location indicator. 18 - 20 Residue name resName1 Residue name. 22 Character chainID1 Chain identifier. 23 - 26 Integer resSeq1 Residue sequence number. 27 AChar iCode1 Insertion code. 43 - 46 Atom atom2 Second atom name. 47 Character altLoc2 Alternate location indicator. 48 - 50 Residue name resName2 Residue name. 52 Character chainID2 Chain identifier. 53 - 56 Integer resSeq2 Residue sequence number. 57 AChar iCode2 Insertion code. 60 - 65 SymOP sym1 Symmetry operator for 1st atom. 67 - 72 SymOP sym2 Symmetry operator for 2nd atom.
Details
* Salt bridges listed normally are those provided by the depositor.
* The two atoms forming the salt bridge through their electrostatic interactions are specified.
* No distinction is made as to which atom has excess positive or negative charge.
* sym1 and sym2 are given as blank when the identity operator (and no cell translation) is to be applied to the atom.
Verification/Validation/Value Authority Control
The distance between the pair of atoms listed must be consistent with the bonding.
Relationships to Other Record Types
CONECT records are generated consistent with the bond type. If symmetry operators are given to generate one of the residues involved in the salt bridge, REMARK 290 defines the symmetry transformation.
Example
1 2 3 4 5 6 7
123456789012345678901234567890123456789012345678901234567890123456789012
SLTBRG O GLU 10 NZ LYS 115
SLTBRG O GLU 10 NZ LYS 115 3654