Skip to main content
. 2018 Oct 19;10(2):453–463. doi: 10.1039/c8sc03814g

Table 1. Proposed function of the biosynthetic, regulatory and resistance genes from the scl gene cluster.

Protein (number of aa) GenBank Homologue (% identity/% similarity) organism GenBank Putative function Proposed role
SclP (213) WP_037773640.1 4-Phosphopantetheinyl transferase (54/61) Streptomyces pristinaespiralis WP_078951206.1 PPTase Biosynthesis of the glycolic acid unit
SclQ4 (386) WP_030624999.1 QncL (37/49) Streptomyces melanovinaceus AFJ11255.1 (ref. 34) Lipoyl attachment domain, acyltransferase catalytic domain
SclQ3 (338) WP_030625001.1 QncL (51/68) S. melanovinaceus AFJ11255.1 (ref. 34) Pyrimidine binding domain, transketolase C-terminal domain
SclQ2 (305) WP_078889003.1 QncN (61/73) S. melanovinaceus AFJ11257.1 (ref. 34) ThDP binding domain
SclQ1 (76) WP_030625009.1 QncM (32/68) S. melanovinaceus AFJ11256.1 (ref. 34) Acyl carrier protein (ACP)
SclM1 (200) WP_078889004.1 MmfR (56/73) Streptomyces coelicolor A3(2) WP_011039544.1 (ref. 9 and 10) TetR-family transcriptional repressor Regulation of the expression of scleric acid biosynthetic genes
SclM2 (336) WP_078889005.1 MmfL (35/47) S. coelicolor A3(2) WP_011039545.1 (ref. 9 and 10) Signaling molecule biosynthesis (butenolide synthase)
SclL (106) WP_051872433.1 LysR family transcriptional regulator (61/72) S. venezuelae WP_015035381.1 LysR transcriptional regulator
SclM3 (228) WP_078889008.1 MmfP (46/56) S. coelicolor A3(2) WP_011039547.1 (ref. 9 and 10) Signaling molecule biosynthesis (hydrolase)
SclM4 (196) WP_051872434.1 MmyR (41/56) S. coelicolor A3(2) WP_011039548.1 (ref. 9 and 10) TetR-family transcriptional repressor
SclM5 (378) WP_051872435.1 MmfH (49/59) S. coelicolor A3(2) WP_011039546.1 (ref. 9 and 10) Signaling molecule biosynthesis (oxidoreductase)
SclN (1083) WP_078889006.1 PuwA (32/48) Cylindrospermum alatosporum CCALA 988 AIW82277.1 (ref. 32) NRPS [C-A-PCP] Activation of l-proline and condensation with glycolic acid
SclT (243) WP_030625041.1 Thioesterase (45/56) Streptomyces sviceus WP_007379259.1 Thioesterase (TE) Hydrolytic release of scleric acid from a carrier protein
SclA (656) WP_051872438.1 PauY18 (56/67) Streptomyces sp. YN86 AIE54238.1 (ref. 33) Anthranilate synthase Biosynthesis of the benzoic acid unit
SclD (405) WP_030625030.1 PauY21 (55/65) Streptomyces sp. YN86 AIE54241.1 (ref. 33) DAHP synthase
SclI (220) WP_030625033.1 PauY19 (57/71) Streptomyces sp. YN86 AIE54239.1 (ref. 33) Isochorismatase
SclG (439) WP_030625035.1 ATP-grasp domain-containing protein (49/62) Streptomyces sp. NRRL B-5680 WP_051746523.1 ATP-grasp family enzyme Condensation reaction of the proline unit with benzoic acid
SclE (435) Major Facilitator Superfamily transporter (53/65) Amycolatopsis vancoresmycina WP_003090471.1 MFS transporter Export of scleric acid outside the cell