>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=98.52  E-value=1.4e-06  Score=59.90  Aligned_cols=99  Identities=15%  Similarity=0.164  Sum_probs=83.5

Q ss_pred             CCCCHHHHHHHHHHHHHHHC-C--HHHCCEEEEECCCCCCCC-HHHHHHHHHHHCCCCCCEEEEECCCHHHHHHHHHHHH
Q ss_conf             98599999999999999727-9--578689999457887546-0058888632026877358984142035888998789
Q gi|254781019|r   47 PDEDIVTMAAAAALPIMQNQ-D--KNLIDTLFFATESSVDQS-KSAAIWLHKLLGLNSSCRVVELKQACYSATCALHMAC  122 (396)
Q Consensus        47 ~~Ed~~tmA~~Aa~~~L~~~-~--~~~Id~li~~T~t~~~~~-~~~a~~v~~~Lgl~~~~~~~Di~~aC~g~~~AL~~A~  122 (396)
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             HHHHCCCCCEEEEEECCCCCCCC
Q ss_conf             99973999769995033201458
Q gi|254781019|r  123 ALVAKSPERKVLIVASDVARYDL  145 (396)
Q Consensus       123 ~~i~sg~~~~aLVV~sD~~~~~~  145 (396)
T Consensus       100 ~~I~~G~~d~~~AGGvEsMS~~P  122 (447)
T TIGR01930       100 QKIRAGEADVVVAGGVESMSRVP  122 (447)
T ss_pred             HHHHCCCCCEEEEECCCCCCCCC
T ss_conf             88534850167860745446675