<ROSETTASCRIPTS>

    <SCOREFXNS>
        <ScoreFunction name="sfxn" weights="%%wts%%" />
        <ScoreFunction name="sfxn_cst" weights="%%wts%%" >
            <Reweight scoretype="coordinate_constraint" weight="0.01"/>
        </ScoreFunction>
    </SCOREFXNS>

    <RESIDUE_SELECTORS>
        # Make residue selectors that identify which residues are at the
        # interface, and which are not
        <Chain name="chainA" chains="A"/>
        <Chain name="chainB" chains="B"/>
        <Neighborhood name="interface_chA" selector="chainB" distance="12.0" />
        <Neighborhood name="interface_chB" selector="chainA" distance="12.0" />
        <Or name="AB" selectors="chainA,chainB" />
        <And name="AB_interface" selectors="interface_chA,interface_chB" />
        <Not name="Not_interface" selector="AB_interface" />
        <ResiduePDBInfoHasLabel name="non_interface_res_selector" property="non_interface_residue" />
        <InterfaceByVector name="interface_by_vector" cb_dist_cut="10.0" nearby_atom_cut="5.5"
            vector_angle_cut="75.0" vector_dist_cut="9.0"
            grp1_selector="chainA" grp2_selector="chainB"/>
        <Not name="not_interface_by_vector" selector="interface_by_vector" />
    </RESIDUE_SELECTORS>

    <TASKOPERATIONS>
        # For preventing repacking of residues not at the interface
        <OperateOnResidueSubset name="restrict_to_interface" selector="non_interface_res_selector">
            <PreventRepackingRLT/>
        </OperateOnResidueSubset>

        # Add extra rotamers and get flags from the command line
        <ExtraRotamersGeneric name="ex1_ex2aro" ex1="1"  ex2aro="1" />
        <InitializeFromCommandline name="init" />
    </TASKOPERATIONS>

    <MOVERS>
        # Mover for adding a label to non-interface residues
        <AddResidueLabel name="label_non_interface_res" residue_selector="Not_interface"
            label="non_interface_residue" />
        <AddResidueLabel name="label_non_interface_by_vector_res" residue_selector="not_interface_by_vector"
            label="non_interface_by_vector_residue" />

        # Mover for deleting one of the chains
        <DeleteRegionMover name="delete_chain_B" residue_selector="chainB" />

        # Apply coordinate constraints to all backbone heavy atoms
        <AddConstraints name="add_bb_coord_cst" >
            <CoordinateConstraintGenerator name="bb_coord_cst" sidechain="false"/>
        </AddConstraints>

        # Relax the complex in Cartesian space, only relaxing bb/sc atoms near the interface
        <FastRelax name="fastrelax" task_operations="restrict_to_interface,ex1_ex2aro,init"
            scorefxn="sfxn_cst" cartesian="true" relaxscript="%%relaxscript%%" repeats="5">
            <MoveMap name="MM" >
                <ResidueSelector selector="non_interface_res_selector" chi="false" bb="false" />
            </MoveMap>
        </FastRelax>
    </MOVERS>

    <PROTOCOLS>
        <Add mover="label_non_interface_res" />
        <Add mover="label_non_interface_by_vector_res" />
        <Add mover="delete_chain_B" />
        <Add mover="add_bb_coord_cst" />
        <Add mover="fastrelax" />
    </PROTOCOLS>
    
    <OUTPUT scorefxn="sfxn" />

</ROSETTASCRIPTS>
