ATP synthase C chain; F(1)F(0) ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F(1) containing the extramembraneous catalytic core and F(0) containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation.

DNA gyrase subunit A; A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to modulate DNA topology and maintain chromosomes in an underwound state. Negative supercoiling favors strand separation, and DNA replication, transcription, recombination and repair, all of which involve strand separation. Also able to catalyze the interconversion of other topological isomers of dsDNA rings, including catenanes and knotted rings. Type II topoisomerases break and join 2 DNA strands simultaneously in an ATP-dependent manner.

ATP synthase C chain; F(1)F(0) ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F(1) containing the extramembraneous catalytic core and F(0) containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation.

50S ribosomal protein L3; One of the primary rRNA binding proteins, it binds directly near the 3'-end of the 23S rRNA, where it nucleates assembly of the 50S subunit; Belongs to the universal ribosomal protein uL3 family.

ATP synthase C chain; F(1)F(0) ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F(1) containing the extramembraneous catalytic core and F(0) containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation.

DNA-directed RNA polymerase, beta subunit; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.

ATP synthase C chain; F(1)F(0) ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F(1) containing the extramembraneous catalytic core and F(0) containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation.

30S ribosomal protein S12; With S4 and S5 plays an important role in translational accuracy.

Probable arabinosyltransferase, membrane protein.

Integral membrane indolylacetylinositol arabinosyltransferase EmbC (arabinosylindolylacetylinositol synthase).

Integral membrane indolylacetylinositol arabinosyltransferase EmbC (arabinosylindolylacetylinositol synthase).

Probable arabinosyltransferase, membrane protein.

TDP-4-keto-6-deoxy-glucose 3,4-isomerase; Involved in the erythromycin biosynthesis pathway. Acts by forming a complex and stabilizing the desosaminyl transferase EryCIII.

Glycosyl transferase, NDP-D-desosamine : 3-L-mycarosyl erythronolide B; Catalyzes the conversion of alpha-L-mycarosylerythronolide B into erythromycin D in the erythromycin biosynthesis pathway.

TDP-4-keto-6-deoxy-glucose 3,4-isomerase; Involved in the erythromycin biosynthesis pathway. Acts by forming a complex and stabilizing the desosaminyl transferase EryCIII.

6-deoxyerythronolide B hydroxylase (6-DEB hydroxylase); Catalyzes the conversion of 6-deoxyerythronolide B (6-DEB) to erythronolide B (EB) by the insertion of an oxygen at the 6S position of 6-DEB. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.

TDP-4-keto-6-deoxy-glucose 3,4-isomerase; Involved in the erythromycin biosynthesis pathway. Acts by forming a complex and stabilizing the desosaminyl transferase EryCIII.

Erythromycin C methlytransferase; S-adenosyl-L-methionine-dependent O-methyltransferase that catalyzes the last step in the erythromycin biosynthesis pathway. Methylates the position 3 of the mycarosyl moiety of erythromycin C, forming the most active form of the antibiotic, erythromycin A. Can also methylate the precursor erythromycin D, forming erythromycin B.

TDP-4-keto-6-deoxy-glucose 3,4-isomerase; Involved in the erythromycin biosynthesis pathway. Acts by forming a complex and stabilizing the desosaminyl transferase EryCIII.

Cytochrome P450 Erythromycin B/D C-12 hydroxylase; Responsible for the C-12 hydroxylation of the macrolactone ring of erythromycin. Thus, EryK catalyzes the hydroxylation of erythromycin D (ErD) at the C-12 position to produce erythromycin C (ErC). Erythromycin B (ErB) is not a substrate for this enzyme.

Glycosyl transferase, NDP-D-desosamine : 3-L-mycarosyl erythronolide B; Catalyzes the conversion of alpha-L-mycarosylerythronolide B into erythromycin D in the erythromycin biosynthesis pathway.

TDP-4-keto-6-deoxy-glucose 3,4-isomerase; Involved in the erythromycin biosynthesis pathway. Acts by forming a complex and stabilizing the desosaminyl transferase EryCIII.

Glycosyl transferase, NDP-D-desosamine : 3-L-mycarosyl erythronolide B; Catalyzes the conversion of alpha-L-mycarosylerythronolide B into erythromycin D in the erythromycin biosynthesis pathway.

6-deoxyerythronolide B hydroxylase (6-DEB hydroxylase); Catalyzes the conversion of 6-deoxyerythronolide B (6-DEB) to erythronolide B (EB) by the insertion of an oxygen at the 6S position of 6-DEB. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.

Glycosyl transferase, NDP-D-desosamine : 3-L-mycarosyl erythronolide B; Catalyzes the conversion of alpha-L-mycarosylerythronolide B into erythromycin D in the erythromycin biosynthesis pathway.

Erythromycin C methlytransferase; S-adenosyl-L-methionine-dependent O-methyltransferase that catalyzes the last step in the erythromycin biosynthesis pathway. Methylates the position 3 of the mycarosyl moiety of erythromycin C, forming the most active form of the antibiotic, erythromycin A. Can also methylate the precursor erythromycin D, forming erythromycin B.

Glycosyl transferase, NDP-D-desosamine : 3-L-mycarosyl erythronolide B; Catalyzes the conversion of alpha-L-mycarosylerythronolide B into erythromycin D in the erythromycin biosynthesis pathway.

Cytochrome P450 Erythromycin B/D C-12 hydroxylase; Responsible for the C-12 hydroxylation of the macrolactone ring of erythromycin. Thus, EryK catalyzes the hydroxylation of erythromycin D (ErD) at the C-12 position to produce erythromycin C (ErC). Erythromycin B (ErB) is not a substrate for this enzyme.

6-deoxyerythronolide B hydroxylase (6-DEB hydroxylase); Catalyzes the conversion of 6-deoxyerythronolide B (6-DEB) to erythronolide B (EB) by the insertion of an oxygen at the 6S position of 6-DEB. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.

TDP-4-keto-6-deoxy-glucose 3,4-isomerase; Involved in the erythromycin biosynthesis pathway. Acts by forming a complex and stabilizing the desosaminyl transferase EryCIII.

6-deoxyerythronolide B hydroxylase (6-DEB hydroxylase); Catalyzes the conversion of 6-deoxyerythronolide B (6-DEB) to erythronolide B (EB) by the insertion of an oxygen at the 6S position of 6-DEB. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.

Glycosyl transferase, NDP-D-desosamine : 3-L-mycarosyl erythronolide B; Catalyzes the conversion of alpha-L-mycarosylerythronolide B into erythromycin D in the erythromycin biosynthesis pathway.

6-deoxyerythronolide B hydroxylase (6-DEB hydroxylase); Catalyzes the conversion of 6-deoxyerythronolide B (6-DEB) to erythronolide B (EB) by the insertion of an oxygen at the 6S position of 6-DEB. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.

Erythromycin C methlytransferase; S-adenosyl-L-methionine-dependent O-methyltransferase that catalyzes the last step in the erythromycin biosynthesis pathway. Methylates the position 3 of the mycarosyl moiety of erythromycin C, forming the most active form of the antibiotic, erythromycin A. Can also methylate the precursor erythromycin D, forming erythromycin B.

Erythromycin C methlytransferase; S-adenosyl-L-methionine-dependent O-methyltransferase that catalyzes the last step in the erythromycin biosynthesis pathway. Methylates the position 3 of the mycarosyl moiety of erythromycin C, forming the most active form of the antibiotic, erythromycin A. Can also methylate the precursor erythromycin D, forming erythromycin B.

TDP-4-keto-6-deoxy-glucose 3,4-isomerase; Involved in the erythromycin biosynthesis pathway. Acts by forming a complex and stabilizing the desosaminyl transferase EryCIII.

Erythromycin C methlytransferase; S-adenosyl-L-methionine-dependent O-methyltransferase that catalyzes the last step in the erythromycin biosynthesis pathway. Methylates the position 3 of the mycarosyl moiety of erythromycin C, forming the most active form of the antibiotic, erythromycin A. Can also methylate the precursor erythromycin D, forming erythromycin B.

Glycosyl transferase, NDP-D-desosamine : 3-L-mycarosyl erythronolide B; Catalyzes the conversion of alpha-L-mycarosylerythronolide B into erythromycin D in the erythromycin biosynthesis pathway.

Erythromycin C methlytransferase; S-adenosyl-L-methionine-dependent O-methyltransferase that catalyzes the last step in the erythromycin biosynthesis pathway. Methylates the position 3 of the mycarosyl moiety of erythromycin C, forming the most active form of the antibiotic, erythromycin A. Can also methylate the precursor erythromycin D, forming erythromycin B.

6-deoxyerythronolide B hydroxylase (6-DEB hydroxylase); Catalyzes the conversion of 6-deoxyerythronolide B (6-DEB) to erythronolide B (EB) by the insertion of an oxygen at the 6S position of 6-DEB. Requires the participation of a ferredoxin and a ferredoxin reductase for the transfer of electrons from NADPH to the monooxygenase.