Table 3. The numbers of hydrogen bonds and salt bridges between monomers in the dodecamers of APDkam589 and TET peptidases from P. horikoshii .

The calculations were performed using the PISA server (http://www.ebi.ac.uk/pdbe/pisa).

	APDkam589	PhTET1	PhTET1	PhTET2	PhTET3
PDB entry	4wwv	2wyr	2cf4	1xfo	2wzn
Sequence identity to APDkam589 (%)		37	37	48	41
Between monomers in the dimer
No. of hydrogen bonds	21	32	28	20	24
No. of salt bridges	4	2	8	16	8
Between monomers in the trimer
No. of hydrogen bonds	11	12	8	2	10
No. of salt bridges	1	9	5	4	2
Total No. of salt bridges between different monomers in the dodecamer
No. of hydrogen bonds	258	336	264	144	264
No. of salt bridges	36	120	108	144	72