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fuse joins two objects into one by forming a bond. A copy of the object containing the first atom is moved so as to form an approximately reasonable bond with the second, and is then merged with the first object.


fuse [ selection1 [, selection2 [, mode [, recolor [, move ]]]]]


  • selection1 = str: single atom selection (will be copied to object 2) {default: (pk1)}
  • selection2 = str: single atom selection {default: (pk2)}
  • mode = int: {default: 0}
    • mode=0:
    • mode=1: adopt segi/chain/resn`resi
    • mode=2: adopt segi/chain
    • mode=3: don't move and don't create a bond, just combine into single object
  • recolor = bool: recolor C atoms to match target {default: 1}
  • move = bool: {default: 1}


Phosphorylate a serine residue:

fetch 1ubq, async=0

fragment phosphite
remove phosphite & elem H

fuse phosphite & elem P, /1ubq///65/OG, mode=1
delete phosphite

show sticks, resi 65
orient resi 65


Each selection must include a single atom in each object. The atoms can both be hydrogens, in which case they are eliminated, or they can both be non-hydrogens, in which case a bond is formed between the two atoms.

See Also

Bond, Unbond, Attach, Replace, Remove_picked