Hi Rayees,
Do you mean you want a PDB file that you're reading to include chain descriptions and UniProt codes, or that you want PDBs that you output to include that info?  I'm going to guess you mean input, but if you meant output let me know.
ChimeraX gets chain descriptions from the PDB file's COMPND records.  For instance, the chain description (D-GALACTOSE/D-GLUCOSE BINDING PROTEIN) for 2gbp's chain A come from these COMPND records:

COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: D-GALACTOSE/D-GLUCOSE BINDING PROTEIN;                     
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES                                                      

Similarly, ChimeraX gets UniProt accession codes from DBREF records.  The DBREF record that provides 2gbp's UniProt reference (DGAL_ECOLI 1-309) is:

DBREF  2GBP A    1   309  UNP    P02927   DGAL_ECOLI      24    332

--Eric

Eric Pettersen
UCSF Computer Graphics Lab


On Jun 19, 2025, at 5:31 PM, Rayees Mattoo via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Hi,
I want to add chain description and Uniprot accession ID to my PDB file which contains many chains (chain IDs from A-M). Please suggest a way to add those details in chimeraX?

Best
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