Sequence alignment between 2b5k(A) and UniProt seq P14215 (PPM1_LIMPO):

P14215 (PPM1_LIMPO): Polyphemusin-1 from Limulus polyphemus 
                 10          
         ---------+- -------
UniProt: RRWCFRVCYRG-FCYRKCR-
         ...........X........
PDB seq: RRWCFRVCYRGRFCYRKCRX
         ---------+---------+
                 10        20