In PDB file, SEQRES represent the aminoacids but some pdb file present the "GLC" and some other. for example
SEQRES 1 A 26 GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC
SEQRES 2 A 26 GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC
SEQRES 1 B 26 GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC
SEQRES 2 B 26 GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC GLC
In that PDB ID: 1C58
What are this and What are represent the SEQRES?