Also see protein-protein complexes and oligomeric proteins

Some examples:

calmodulin / target peptide complex from myosin light-chain kinase ( 92SCI632 )

SH2- and SH3-peptide complexes ( 94CELL461 , 94BIO13531 , 94NAT891 , 94NAT898 , 94CELL933 , 94SCI1241 , 95BIO2107 )

Mixed disulfide intermediates of glutaredoxin and glutathione ( 94JMB1585-235 )

Human Thioredoxin and its target peptides ( 95STR289 , 96STR613 )

Human Grb7-SH2 domain with erbB2 (ten aa) peptide (03JB205-27)