1	.	.	.	.	.	.	.	.	10	.	.	.	.	.	.	.	.	.	20	.	.	.	.	.	.	.	.	.	30	.	.	.	.	.	.	.	.	.	40	.	.	.	.	.	.	.	.	.	50	.	.	.	.	.	.	.	.	.	60
Sequence		V	S	T	R	Q	A	A	E	A	D	L	A	G	K	A	A	Q	Y	R	P	D	E	L	A	R	Y	A	Q	R	V	M	D	W	L	H	P	D	G	D	L	T	D	T	E	R	A	R	K	R	G	I	T	L	S	N	Q	Q	Y	D	G
Secondary structure
SS confidence
Disorder		?	?	?																																					?	?	?
Disorder confidence
		.	.	.	.	.	.	.	.	.	70	.	.	.	.	.	.	.	.	.	80	.	.	.	.	.	.	.	.	.	90	.	.	.	.	.	.	.	.	.	100	.	.	.	.	.	.	.	.	.	110	.	.	.	.	.	.	.	.	.	120
Sequence		M	S	R	L	S	G	Y	L	T	P	Q	A	R	A	T	F	E	A	V	L	A	K	L	A	A	P	G	A	T	N	P	D	D	H	T	P	V	I	D	T	T	P	D	A	A	A	I	D	R	D	T	R	S	Q	A	Q	R	N	H	D
Secondary structure
SS confidence
Disorder																														?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?		?
Disorder confidence
		.	.	.	.	.	.	.	.	.	130	.	.	.	.	.	.	.	.	.	140	.	.	.	.	.	.	.	.	.	150	.	.	.	.	.	.	.	.	.	160	.	.	.	.	.	.	.	.	.	170	.	.	.	.	.	.	.	.	.	180
Sequence		G	L	L	A	G	L	R	A	L	I	A	S	G	K	L	G	Q	H	N	G	L	P	V	S	I	V	V	T	T	T	L	T	D	L	Q	T	G	A	G	K	G	F	T	G	G	G	T	L	L	P	M	A	D	V	I	R	M	T	S	H
Secondary structure
SS confidence
Disorder																	?	?
Disorder confidence
		.	.	.	.	.	.	.	.	.	190	.	.	.	.	.	.	.	.	.	200	.	.	.	.	.	.	.	.	.	210	.	.	.	.	.	.	.	.	.	220	.	.	.	.	.	.	.	.	.	230	.	.	.	.	.	.	.	.	.	240
Sequence		A	H	H	Y	S	P	A	S	G	R	Y	P	Q	A	I	F	D	H	G	T	P	L	A	L	Y	H	T	K	R	L	A	S	P	A	Q	R	I	M	L	F	A	N	D	R	G	C	T	K	P	G	C	D	A	P	A	Y	H	S	Q	A
Secondary structure
SS confidence
Disorder
Disorder confidence
		.	.	.	.	.	.	.	.	.	250	.	.	.	.	.	.	.	.	.	260	.	.	.	.	.	.	.	.	.	270	.	.	.	.	.	.	.	.	.	280	.	.	.	.	.	.	.	.	.	290	.	.	.	.	.	.	.	.	.	300
Sequence		H	H	V	T	A	W	T	S	T	G	R	T	D	I	T	E	L	T	L	A	C	G	P	D	N	R	L	A	E	K	G	W	T	T	H	N	N	T	H	G	H	T	E	W	L	P	P	P	H	L	D	H	G	Q	P	R	T	N	T	F
Secondary structure
SS confidence
Disorder																																																				?	?
Disorder confidence
		.	.	.	.	.	.	.	.	.	310	.	.	.	.	.	.	.
Sequence		H	H	P	E	R	F	L	H	N	Q	D	D	D	D	K	P	D
Secondary structure
SS confidence
Disorder							?	?	?	?	?	?	?	?	?	?	?	?
Disorder confidence

Confidence Key High(9)                     Low (0)

? Disordered ( 15%) Alpha helix ( 35%) Beta strand ( 11%) TM helix ( 5%) (View membrane topology prediction)

Rank Aligned region

PDB 2qgp chain A Region: 206 - 272 Aligned: 67 Modelled: 67 Confidence: 99.2% Identity: 13% PDB header:hydrolase Chain: A: PDB Molecule:hnh endonuclease; PDBTitle: x-ray structure of the nhn endonuclease from geobacter2 metallireducens. northeast structural genomics consortium target3 gmr87. Phyre2 PDB 6ghc chain A Region: 179 - 271 Aligned: 93 Modelled: 93 Confidence: 99.0% Identity: 17% PDB header:hydrolase Chain: A: PDB Molecule:5-methylcytosine-specific restriction enzyme a; PDBTitle: modification dependent ecokmcra restriction endonuclease Phyre2 PDB 5mkw chain A Region: 208 - 269 Aligned: 62 Modelled: 62 Confidence: 98.8% Identity: 15% PDB header:hydrolase Chain: A: PDB Molecule:dna annealing helicase and endonuclease zranb3; PDBTitle: crystal structure of the human zranb3 hnh domain Phyre2 PDB 5x1h chain S Region: 192 - 289 Aligned: 95 Modelled: 98 Confidence: 98.8% Identity: 14% PDB header:protein transport Chain: S: PDB Molecule:icmj (dotn); PDBTitle: structure of legionella pneumophila dotn Phyre2 PDB 5h0m chain A Region: 213 - 269 Aligned: 57 Modelled: 57 Confidence: 98.3% Identity: 18% PDB header:hydrolase Chain: A: PDB Molecule:hnh endonuclease; PDBTitle: crystal structure of deep-sea thermophilic bacteriophage gve2 hnh2 endonuclease with zinc ion Phyre2 PDB 5zmm chain D Region: 206 - 271 Aligned: 66 Modelled: 66 Confidence: 98.2% Identity: 21% PDB header:dna binding protein Chain: D: PDB Molecule:uncharacterized protein mcra; PDBTitle: structure of the type iv phosphorothioation-dependent restriction2 endonuclease scomcra Phyre2 PDB 5vgb chain A Region: 215 - 268 Aligned: 54 Modelled: 54 Confidence: 98.0% Identity: 17% PDB header:hydrolase/hydrolase inhibitor Chain: A: PDB Molecule:crispr-associated endonuclease cas9; PDBTitle: crystal structure of nmecas9 hnh domain bound to anti-crispr acriic1 Phyre2 PDB 4oge chain A Region: 215 - 268 Aligned: 54 Modelled: 54 Confidence: 97.2% Identity: 19% PDB header:hydrolase Chain: A: PDB Molecule:hnh endonuclease domain protein; PDBTitle: crystal structure of the type ii-c cas9 enzyme from actinomyces2 naeslundii Phyre2 PDB 5axw chain A Region: 215 - 268 Aligned: 54 Modelled: 54 Confidence: 96.5% Identity: 13% PDB header:hydrolase/rna/dna Chain: A: PDB Molecule:crispr-associated endonuclease cas9; PDBTitle: crystal structure of staphylococcus aureus cas9 in complex with sgrna2 and target dna (ttgggt pam) Phyre2 PDB 6ghs chain A Region: 216 - 286 Aligned: 70 Modelled: 71 Confidence: 95.6% Identity: 13% PDB header:hydrolase Chain: A: PDB Molecule:tagi restriction endonuclease; PDBTitle: modification dependent tagi restriction endonuclease Phyre2 PDB 2gyk chain B domain 1 Region: 239 - 271 Aligned: 33 Modelled: 33 Confidence: 87.0% Identity: 15% Fold: His-Me finger endonucleases Superfamily: His-Me finger endonucleases Family: HNH-motif Phyre2 PDB 4cmq chain B Region: 215 - 270 Aligned: 53 Modelled: 56 Confidence: 84.1% Identity: 15% PDB header:hydrolase Chain: B: PDB Molecule:crispr-associated endonuclease cas9/csn1; PDBTitle: crystal structure of mn-bound s.pyogenes cas9 Phyre2 PDB 2jb0 chain B domain 1 Region: 239 - 265 Aligned: 26 Modelled: 27 Confidence: 74.4% Identity: 19% Fold: His-Me finger endonucleases Superfamily: His-Me finger endonucleases Family: HNH-motif Phyre2 PDB 5g2x chain C Region: 224 - 265 Aligned: 32 Modelled: 42 Confidence: 70.0% Identity: 22% PDB header:transferase Chain: C: PDB Molecule:group ii intron-encoded protein ltra; PDBTitle: structure a of group ii intron complexed with its reverse2 transcriptase Phyre2 PDB 4qko chain H Region: 239 - 270 Aligned: 32 Modelled: 32 Confidence: 51.8% Identity: 16% PDB header:antimicrobial protein Chain: H: PDB Molecule:pyocin-s2; PDBTitle: the crystal structure of the pyocin s2 nuclease domain, immunity2 protein complex at 1.8 angstroms Phyre2 PDB 3plw chain A Region: 209 - 282 Aligned: 70 Modelled: 74 Confidence: 47.6% Identity: 20% PDB header:hydrolase Chain: A: PDB Molecule:recombination enhancement function protein; PDBTitle: ref protein from p1 bacteriophage Phyre2 PDB 4uhp chain A Region: 239 - 269 Aligned: 31 Modelled: 31 Confidence: 46.0% Identity: 23% PDB header:hydrolase Chain: A: PDB Molecule:large component of pyocin ap41; PDBTitle: crystal structure of the pyocin ap41 dnase-immunity complex Phyre2 PDB 5ew5 chain C Region: 239 - 270 Aligned: 32 Modelled: 32 Confidence: 45.1% Identity: 9% PDB header:hydrolase Chain: C: PDB Molecule:colicin-e9; PDBTitle: crystal structure of colicin e9 in complex with its immunity protein2 im9 Phyre2 PDB 7cei chain B Region: 239 - 269 Aligned: 31 Modelled: 31 Confidence: 44.9% Identity: 13% PDB header:immune system Chain: B: PDB Molecule:protein (colicin e7 immunity protein); PDBTitle: the endonuclease domain of colicin e7 in complex with its inhibitor2 im7 protein Phyre2 PDB 2dlk chain A domain 1 Region: 226 - 233 Aligned: 8 Modelled: 8 Confidence: 34.6% Identity: 50% Fold: beta-beta-alpha zinc fingers Superfamily: beta-beta-alpha zinc fingers Family: Classic zinc finger, C2H2 Phyre2 1 c2qgpA_ 2 c6ghcA_ 3 c5mkwA_ 4 c5x1hS_ 5 c5h0mA_ 6 c5zmmD_ 7 c5vgbA_ 8 c4ogeA_ 9 c5axwA_ 10 c6ghsA_ 11 d2gykb1 12 c4cmqB_ 13 d2jb0b1 14 c5g2xC_ 15 c4qkoH_ 16 c3plwA_ 17 c4uhpA_ 18 c5ew5C_ 19 c7ceiB_ 20 d2dlka1 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99