The clustal format read and written by Multalign Viewer includes characters symbolizing degree of conservation.
Positions where every residue is the same type (complete identity) are marked with an asterisk (*).
Positions where one of the following strong groups is fully conserved are marked with a colon (:).
Positions where one of the following weak groups is fully conserved are marked with a period (.).STA NEQK NHQK NDEQ QHRK MILV MILF HY FYW
The groups are defined using the PAM250 matrix; scores within the strong groups are over 0.5 and scores within the weak groups are positive but no greater than 0.5.CSA ATV SAG STNK STPA SGND SNDEQK NDEQHK NEQHRK FVLIM HFY
Other positions are not marked with any character.