QERFQuasi-Electric Response Filter
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The MotD (flagellar motor protein) motifs (LETILRQVRPLIGQGKVADYIPALATVEG SRLGIAICT VDGQ LFQAGDA QERF SIQSISKV) along with WisP family C-Terminal Region (RGLSGVSDIAYDTVVAR SEFEH SARNAAIA WLMKSFGNFHHD VTTVLQNYFHYC) were observed among the Escherichia spp.
When QERF is combined in a query with a subject and/or type code, it would ensure that only relevant results were presented to the user.