>TIGR02244 HAD-IG-Ncltidse HAD superfamily (subfamily IG) hydrolase, 5'-nucleotidase; InterPro: IPR008380 This family includes a 5'-nucleotidase, 3.1.3.5 from EC, specific for purines (IMP and GMP) . These enzymes are members of the Haloacid Dehalogenase (HAD) superfamily. HAD members are recognized by three short motifs {hhhhDxDx(T/V)}, {hhhh(T/S)}, and either {hhhh(D/E)(D/E)x(3-4)(G/N)} or {hhhh(G/N)(D/E)x(3-4)(D/E)} (where "h" stands for a hydrophobic residue). Crystal structures of many HAD enzymes has verified PSI-PRED predictions of secondary structural elements which show each of the "hhhh" sequences of the motifs as part of beta sheets. This subfamily of enzymes is part of "Subfamily I" of the HAD superfamily by virtue of a "cap" domain in between motifs 1 and 2. This subfamily's cap domain has a different predicted secondary structure than all other known HAD enzymes and thus has been designated "subfamily IG", the domain appears to consist of a mixed alpha/beta fold..

Probab=97.58  E-value=0.0002  Score=49.26  Aligned_cols=47  Identities=17%  Similarity=0.292  Sum_probs=33.3

Q ss_pred             CCHHHHHHHHHHHHHHCCCCC-CCEEEECCCHHHHHHHHH-HCCCCEEEECC
Q ss_conf             702589999986543148890-008997388578899999-76996999718
Q gi|254780847|r  196 HLPIYEMAFKKISSLCNSFNK-KRILAIGDGMDTDIKGAL-QSGIDALYVSD  245 (282)
Q Consensus       196 ~~~~~~~a~~~l~~~~~~~~~-~~~lmIGD~l~tDI~gA~-~~G~~silV~t  245 (282)
T Consensus       335 s~~~f~~~~~GmLq---k~~G~~~vLYfGDHiy~D~~~~~k~~gWRT~~ii~  383 (402)
T TIGR02244       335 SLKQFHELLKGMLQ---KWRGEKEVLYFGDHIYSDLLRSKKKRGWRTALIIP  383 (402)
T ss_pred             CHHHHHHHHHHHHH---HCCCCCCEEEECCCCHHCCCCHHHCCCCCEEEEEH
T ss_conf             86899999863563---22899843677676100023120016875578726