Dear UCSF ChimeraX team,

I hope this email finds you well. I am writing to inquire about the bond type generated by the "contacts" command with all default settings in UCSF ChimeraX for a protein structure that was generated using AlphaFold.

I am particularly interested in understanding the nature of the blue line that is generated after running this command. As a reminder, my protein structure was generated using AlphaFold, and I would like to know if the bond type is a hydrogen bond, salt bridge, disulfide bond, or another type of bonding.

Any information or insight you could provide on this matter would be greatly appreciated. Thank you for your time and assistance.

Best regards,

James