Score = 320 (117.7 bits), Expect = 9.1e-29, P = 9.1e-29
Identities = 61/127 (48%), Positives = 92/127 (72%)
Query: 1 MNTAVKGIDVIDRKVEN-GILKSHRLISSQWGLPNWARSVVG-STNIFYASERSEVNPIT 58
MN V G+DV++R V+ G L SHRL+S++WGLP + ++++G S + Y E S V+P+
Sbjct: 8 MNPCVVGVDVLERSVDGRGRLHSHRLLSTEWGLPGFVKAILGTSRTLTYIKEHSVVDPVE 67
Query: 59 RQMTLETTNLTYGHVIAVDERLCYQPHPEDNSKTLLKQEAVVTVRGIPLSSYVENMLTSK 118
++M L +TN+T +V++V+ERL Y PHPED T+L QEA++TV+GI L SY+E+++ S
Sbjct: 68 KKMELCSTNITLTNVVSVNERLVYTPHPEDPGMTVLTQEAIITVKGISLGSYLESLMAST 127
Query: 119 ISHNAGK 125
IS NA K
Sbjct: 128 ISSNAKK 134
Score = 125 bits (316), Expect = 4e-38
Identities = 51/128 (39%), Positives = 75/128 (58%), Gaps = 3/128 (2%)
Query: 1 MNTAVKGIDVIDRKV-ENGILKSHRLISSQWGLPNWARSVVGSTNIFYASERSEVNPITR 59
+ V +DV++RKV ++G L + RL++ Q LP W + ++G + Y E S V+P R
Sbjct: 15 YSPHVISVDVLERKVDDDGKLHTERLLTKQGRLPRWLKKLIGVADTVYVLEVSVVDPKKR 74
Query: 60 QMTLETTNLTYGHVIAVDERLCYQPHPEDNSKTLLKQEAVVTVRGI--PLSSYVENMLTS 117
+TLET NLT+ ++VDER Y PHPE+ + T QEA ++V+G SS VE
Sbjct: 75 TLTLETRNLTFSSRLSVDERCTYTPHPENPNWTCFDQEASISVKGSFFGFSSKVEKWSLK 134
Query: 118 KISHNAGK 125
+ S NA K
Sbjct: 135 RFSQNAKK 142
This family includes a conserved region found in the PRELI protein and yeast YLR168C gene MSF1 product. The function of this protein is unknown, though it is thought to be involved in intra-mitochondrial protein sorting. This region is also found in a number of other eukaryotic proteins. Length = 157
The function of this protein is unknown, though it is thought to be involved in intra-mitochondrial protein sorting. GFP-tagged MSF1 localizes to mitochondria and is required for wild-type respiratory growth []. This region is also found in a number of other eukaryotic proteins. The PRELI/MSF1 domain is an eukaryotic protein module which occurs in stand-alone form in several proteins, including the human PRELI protein and the yeast MSF1 protein, and as an amino-terminal domain in an orthologous group of proteins typified by human SEC14L1, which is conserved in all animals. In this group of proteins, the PRELI/MSF1 domain co-occurs with the CRAL-TRIO (see PDOC50191 from PROSITEDOC) and the GOLD domains (see PDOC50866 from PROSITEDOC). The PRELI/MSF1 domain is approximately 170 residues long and is predicted to assume a globular alpha + beta fold with six beta strands and four alpha helices. It has been suggested that the PRELI/MSF1 domain may have a function associated with cellular membrane [].
>PF02121 IP_trans: Phosphatidylinositol transfer protein; InterPro: IPR001666 Phosphatidylinositol transfer protein (PITP) is a ubiquitous cytosolic protein, thought to be involved in transport of phospholipids from their site of synthesis in the endoplasmic reticulum and Golgi to other cell membranes []
More recently, PITP has been shown to be an essential component of the polyphosphoinositide synthesis machinery and is hence required for proper signalling by epidermal growth factor and f-Met-Leu-Phe, as well as for exocytosis. The role of PITP in polyphosphoinositide synthesis may also explain its involvement in intracellular vesicular traffic [].; GO: 0006810 transport, 0005622 intracellular; PDB: 1T27_A 1KCM_A 2A1L_A 1UW5_C.
>cd08889 SRPBCC_PITPNM1-2_like Lipid-binding SRPBCC domain of mammalian PITPNM1-2 and related proteins (Class IIA PITPs)
This subgroup includes an N-terminal SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain of mammalian Class II phosphatidylinositol transfer protein (PITPs), PITPNM1/PITPalphaI/Nir2 (PYK2 N-terminal domain-interacting receptor2) and PITPNM2/PITPalphaII/Nir3), Drosophila RdgB, and related proteins. These are membrane associated multidomain proteins belonging to the PITP family of lipid transfer proteins, and to the SRPBCC domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. In vitro, PITPs bind phosphatidylinositol (PtdIns), as well as phosphatidylcholine (PtdCho) but with a lower affinity. They transfer these lipids from one membrane compartment to another. The cellular roles of PITPs include inositol lipid signaling, PtdIns metabolism, and membrane trafficking. Ablation of the mouse gene en
>cd07815 SRPBCC_PITP Lipid-binding SRPBCC domain of Class I and Class II Phosphatidylinositol Transfer Proteins
This family includes the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain of the phosphatidylinositol transfer protein (PITP) family of lipid transfer proteins. This family of proteins includes Class 1 PITPs (PITPNA/PITPalpha and PITPNB/PITPbeta, Drosophila vibrator and related proteins), Class IIA PITPs (PITPNM1/PITPalphaI/Nir2, PITPNM2/PITPalphaII/Nir3, Drosophila RdgB, and related proteins), and Class IIB PITPs (PITPNC1/RdgBbeta and related proteins). The PITP family belongs to the SRPBCC domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. In vitro, PITPs bind phosphatidylinositol (PtdIns), as well as phosphatidylcholine (PtdCho) but with a lower affinity. They transfer these lipids from one membrane compartment to another. The cellular roles of PITPs include inositol lipid signaling, PtdIns
This subgroup includes the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain of mammalian Class 1 phosphatidylinositol transfer proteins (PITPs), PITPNA/PITPalpha and PITPNB/PITPbeta, Drosophila vibrator, and related proteins. These are single domain proteins belonging to the PITP family of lipid transfer proteins, and to the SRPBCC domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. In vitro, PITPs bind phosphatidylinositol (PtdIns), as well as phosphatidylcholine (PtdCho) but with a lower affinity. They transfer these lipids from one membrane compartment to another. The cellular roles of PITPs include inositol lipid signaling, PtdIns metabolism, and membrane trafficking. In addition, PITPNB transfers sphingomyelin in vitro, with a low affinity. PITPNA is found chiefly in the nucleus and cy
>cd08890 SRPBCC_PITPNC1_like Lipid-binding SRPBCC domain of mammalian PITPNC1,and related proteins (Class IIB PITPs)
This subgroup includes the N-terminal SRPBCC (START/RHO_alpha_C /PITP /Bet_v1/CoxG/CalC) domain of mammalian Class IIB phosphatidylinositol transfer protein (PITP), PITPNC1/RdgBbeta, and related proteins. These are metazoan proteins belonging to the PITP family of lipid transfer proteins, and to the SRPBCC domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. In vitro, PITPs bind phosphatidylinositol (PtdIns), as well as phosphatidylcholine (PtdCho) but with a lower affinity. They transfer these lipids from one membrane compartment to another. The cellular roles of PITPs include inositol lipid signaling, PtdIns metabolism, and membrane trafficking. Mammalian PITPNC1 contains an amino-terminal SRPBCC PITP-like domain and a short carboxyl-terminal domain. It is a cytoplasmic protein, and is ubiquitously
