L-arabinose isomerase; Catalyzes the conversion of L-arabinose to L-ribulose.

L-ribulose-5-phosphate 4-epimerase; Involved in the degradation of L-arabinose. Catalyzes the interconversion of L-ribulose 5-phosphate (LRu5P) and D- xylulose 5-phosphate (D-Xu5P) via a retroaldol/aldol mechanism (carbon- carbon bond cleavage analogous to a class II aldolase reaction).

Asp/Glu_racemase family protein; Amino-acid racemase able to utilize a broad range of substrates. Highest activity is observed with L-homoserine and D- homoserine. Has tenfold lower activity against L-methionine, L-leucine, L-valine and L-histidine. Has low activity with L-norvaline, L- asparagine, D-methionine, L-aminobutyric acid, L-isoleucine, L-serine, L-norleucine, L-alanine, L-glutamine, LL-diaminopimelic acid and L- phenylalanine. Has no activity against ten L-amino acids (Thr, Glu, Asp, Arg, Lys, Tyr, Trp, Orn, Cit and Aad). D-amino acids might be used as components of peptidog [...]

Ara regulon transcriptional activator; Transcription factor that regulates the expression of several genes involved in the transport and metabolism of L-arabinose. Functions both as a positive and a negative regulator. In the presence of arabinose, activates the expression of the araBAD, araE, araFGH and araJ promoters. In the absence of arabinose, negatively regulates the araBAD operon. Represses its own transcription. Acts by binding directly to DNA.

L-arabinose-inducible putative transporter, MFS family; May be involved in either the transport or processing of arabinose polymers; Belongs to the major facilitator superfamily.

L-arabinose ABC transporter periplasmic binding protein; Involved in the high-affinity L-arabinose membrane transport system. Binds with high affinity to arabinose, but can also bind D- galactose (approximately 2-fold reduction) and D-fucose (approximately 40-fold reduction).

D-xylose isomerase; Protein involved in carbohydrate catabolic process and glucose metabolic process; Belongs to the xylose isomerase family.

Xylulokinase; Catalyzes the phosphorylation of D-xylulose to D-xylulose 5- phosphate. Also catalyzes the phosphorylation of 1- deoxy-D-xylulose to 1-deoxy-D-xylulose 5-phosphate, with lower efficiency. Can also use D-ribulose, xylitol and D- arabitol, but D-xylulose is preferred over the other substrates. Has a weak substrate-independent Mg-ATP-hydrolyzing activity ; Belongs to the FGGY kinase family.

Lactose permease; Responsible for transport of beta-galactosides into the cell, with the concomitant import of a proton (symport system). Can transport lactose, melibiose, lactulose or the analog methyl-1-thio-beta,D- galactopyranoside (TMG), but not sucrose or fructose. The substrate specificity is directed toward the galactopyranosyl moiety of the substrate.