Tandem Oligo-Peptide Repeats
Observed in 80,000 proteins from SWISS-PROT database (Release 38 of July, 1999)
 

Repeat type	Minimum Number of Repeating Units	Number of Entries
Tandem Di-peptide repeats	7	161
Tandem Tri-peptide repeats	5	109
Tandem Tetra-peptide repeats	4	117
Tandem Penta-peptide repeats	4	76
Tandem Hexa-peptide repeats	4	74
Tandem Hepta-peptide repeats	4	58
Tandem Octa-peptide repeats	4	108
Tandem Nona-peptide repeats	3	58
Tandem Deca-peptide repeats	3	114
Tandem Repeats of 11 to 20-mer oligo-peptides

Maximum mismatch allowed = 10%