>TIGR01930 AcCoA-C-Actrans acetyl-CoA acetyltransferases; InterPro: IPR002155 Two different types of thiolase , , are found both in eukaryotes and in prokaryotes: acetoacetyl-CoA thiolase (2.3.1.9 from EC) and 3-ketoacyl-CoA thiolase (2.3.1.16 from EC). 3-ketoacyl-CoA thiolase (also called thiolase I) has a broad chain-length specificity for its substrates and is involved in degradative pathways such as fatty acid beta-oxidation. Acetoacetyl-CoA thiolase (also called thiolase II) is specific for the thiolysis of acetoacetyl-CoA and involved in biosynthetic pathways such as poly beta-hydroxybutyrate synthesis or steroid biogenesis. In eukaryotes, there are two forms of 3-ketoacyl-CoA thiolase: one located in the mitochondrion and the other in peroxisomes. There are two conserved cysteine residues important for thiolase activity. The first located in the N-terminal section of the enzymes is involved in the formation of an acyl-enzyme intermediate; the second located at the C-terminal extremity is the active site base involved in deprotonation in the condensation reaction. Mammalian nonspecific lipid-transfer protein (nsL-TP) (also known as sterol carrier protein 2) is a protein which seems to exist in two different forms: a 14 Kd protein (SCP-2) and a larger 58 Kd protein (SCP-x). The former is found in the cytoplasm or the mitochondria and is involved in lipid transport; the latter is found in peroxisomes. The C-terminal part of SCP-x is identical to SCP-2 while the N-terminal portion is evolutionary related to thiolases ..

Probab=98.94  E-value=1.7e-09  Score=81.95  Aligned_cols=98  Identities=17%  Similarity=0.159  Sum_probs=80.2

Q ss_pred             CCCCHHHHHHHHHHHHHHHC-CCCCCCCCEEEEEEEEECCCC-CCCCCCCCCCCCCC-CCCCCCCCCCCCCCHHHHHHHH
Q ss_conf             98879999999999986430-132223442588431002368-87432211210023-8633342101231012567657
Q gi|254780489|r   50 KHETLTDIAIQAGDIALRNA-NIKKDSISLTLLATSTPDHLL-PPSSPLITHRLGLM-QSGAIDLTGACAGFLYALVMAD  126 (325)
Q Consensus        50 ~~e~~~~la~~Aa~~aL~~a-~~~~~dId~ii~~s~t~d~~~-P~~a~~v~~~Lg~~-~~~~~di~~~C~g~l~aL~~A~  126 (325)
T Consensus        20 ~~~~a~dL~~~~i~~ll~r~p~l~~~~iD~vi~G~V~~~g~~g~~~aR~aaL~AGl~~~vpa~tvnr~CaSGl~Av~~aa   99 (447)
T TIGR01930        20 KDLSAEDLGAAVIKELLERNPGLDPELIDDVILGNVLQAGEQGQNIARQAALAAGLPESVPALTVNRQCASGLQAVALAA   99 (447)
T ss_pred             CCCCHHHHHHHHHHHHHHHCCCCCHHHCCEEEEEEEECCCCCCHHHHHHHHHHCCCCCCCCEEEECHHHHHHHHHHHHHH
T ss_conf             78787999999999999853688846728177610005776441489999987068987873442023242799999999


Q ss_pred             HHHHCCCCEEEE-EEECCCCCC
Q ss_conf             887438850588-620122444
Q gi|254780489|r  127 SYINSHQKPVLI-IAANLLSRR  147 (325)
Q Consensus       127 ~~i~~g~~~vLV-v~~e~~S~~  147 (325)
T Consensus       100 ~~I~~G~~d~~~AGGvEsMS~~  121 (447)
T TIGR01930       100 QKIRAGEADVVVAGGVESMSRV  121 (447)
T ss_pred             HHHHCCCCCEEEEECCCCCCCC
T ss_conf             8853485016786074544667