Jump to: navigation, search ... A peptide bond is a chemical bond formed between two molecule s when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). This is a dehydration synthesis re action, and usually occurs between amino acids. Peptide bond.
Recipients notify you that the e-mail message you sent appears to them as a message with an attachment called winmail.dat. You are using the Rich Text message format, which the recipient's e-mail program cannot interpret correctly.
When you receive a message from a user who has 'mistakenly' sent you a message in Microsoft Outlook RTF format, you will receive the normal message text along with an attached file named 'winmail.dat', The winmail.dat file contains a rtf file formatted version of the email message and attached files. read more +.