RPSBLAST alignment for GI: 254780333 and conserved domain: cd06825
>gnl|CDD|143498 cd06825, PLPDE_III_VanT, Type III Pyridoxal 5-phosphate (PLP)-Dependent Enzymes, VanT and similar proteins. This subfamily is composed of Enterococcus gallinarum VanT and similar proteins. VanT is a membrane-bound serine racemase (EC 5.1.1.18) that is essential for vancomycin resistance in Enterococcus gallinarum. It converts L-serine into its D-enantiomer (D-serine) for peptidoglycan synthesis. The C-terminal region of this protein contains a PLP-binding TIM-barrel domain followed by beta-sandwich domain, which is homologous to the fold type III PLP-dependent enzyme, bacterial alanine racemase (AR). AR exists as homodimers with active sites that lie at the interface between the TIM barrel domain of one subunit and the beta-sandwich domain of the other subunit. On the basis of this similarity, it has been suggested that dimer formation of VanT is required for its catalytic activity, and that it catalyzes the racemization of serine in a mechanistically similar manner to that of alanine by bacterial AR. Some biochemical evidence indicates that VanT also exhibits alanine racemase activity and plays a role in the racemization of L-alanine. VanT contains a unique N-terminal transmembrane domain, which may function as an L-serine transporter. VanT serine racemases are not related to eukaryotic serine racemases, which are fold type II PLP-dependent enzymes. Length = 368
Score = 188 bits (479), Expect = 3e-48
Identities = 124/378 (32%), Positives = 183/378 (48%), Gaps = 31/378 (8%)
Query: 9 LKIDLTALKNNWHSMN-ALSGNARTAAVVKDNAYGLGCEKIAPALYNAGVQDFFVTSVEE 67
L+IDL+AL++N + L + AVVK NAYG G ++A L G+ F V +++E
Sbjct: 4 LEIDLSALEHNVKEIKRLLPSTCKLMAVVKANAYGHGDVEVARVLEQIGIDFFAVATIDE 63
Query: 68 GVKLRLYTPQARIFVLYGIHPGQEKIIFDTNLIPVISSVPQLTFYSKLMSCGVSHPYALQ 127
G++LR + I +L P + K + +L + S + +L V+ L+
Sbjct: 64 GIRLREAGIKGEILILGYTPPVRAKELKKYSLTQTLIS---EAYAEELSKYAVNIKVHLK 120
Query: 128 VDTGFNRLGLSLQEALDFTHNSFNKKLGQLSLIISHLACAD--DPSSHV-NSVQLERFRT 184
VDTG +RLG S E +D + K ++S I SHL +D D Q+ F
Sbjct: 121 VDTGMHRLGES-PEDIDSILAIYRLKNLKVSGIFSHLCVSDSLDEDDIAFTKHQIACFDQ 179
Query: 185 LISHYK--GIE---ASLASSSGILLGPNYHFQLTRPGISLYGGT----DKINKSHPMQTV 235
+++ K GIE + SS GIL P+ + RPGI LYG D ++ V
Sbjct: 180 VLADLKARGIEVGKIHIQSSYGILNYPDLKYDYVRPGILLYGVLSDPNDPTKLGLDLRPV 239
Query: 236 VTAEARIILIRKALAGELVSYGGQKKLTRDSLIAVAAIGYADGYPLTLSGLDSEHSPSVF 295
++ +A++IL+RK GE V YG +R + IA +IGYADGYP +LS
Sbjct: 240 LSLKAKVILVRKVAKGEAVGYGRLFVASRTTRIATVSIGYADGYPRSLSN---------- 289
Query: 296 LGGKGFIKGYMVPILGKITMDMTMFDITDSLSIEVGDYIQIFGPD----IKLDDVALASG 351
I G PI+G I MD M D+TD ++ GD + G D + D+VA +
Sbjct: 290 QKAYVLINGKRAPIIGNICMDQLMVDVTDIPEVKEGDTATLIGQDGDEELSADEVARNAH 349
Query: 352 TTNYDLLVRIGTRYAKFY 369
T +LL RIG R + Y
Sbjct: 350 TITNELLSRIGERVKRIY 367