pfam09534: Trp_oprn_chp (This model is not part of the current CDD release)
Tryptophan-associated transmembrane protein (Trp_oprn_chp)
Members of this family are predicted transmembrane proteins with four membrane-spanning helices. Members are found in the Actinobacteria (Mycobacterium, Corynebacterium, Streptomyces), always associated with genes for tryptophan biosynthesis.