RPS-BLAST 2.2.22 [Sep-27-2009] Database: CddA 21,609 sequences; 6,263,737 total letters Searching..................................................done Query= gi|254780209|ref|YP_003064622.1| hypothetical protein CLIBASIA_00470 [Candidatus Liberibacter asiaticus str. psy62] (51 letters) >gnl|CDD|133096 cd06238, Peptidase_M14-like_1_1, Peptidase M14-like domain of a functionally uncharacterized subgroup of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding carboxypeptidases (CPs) which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Two major subfamilies of the M14 family, defined based on sequence and structural homology, are the A/B and N/E subfamilies. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by an N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. The A forms have slightly different specificities, with Carboxypeptidase A1 (CPA1) preferring aliphatic and small aromatic residues, and CPA2 preferring the bulky aromatic side chains. Enzymes belonging to the N/E subfamily enzymes are not produced as inactive precursors and instead rely on their substrate specificity and subcellular compartmentalization to prevent inappropriate cleavage. They contain an extra C-terminal transthyretin-like domain, thought to be involved in folding or formation of oligomers. MCPs can also be classified based on their involvement in specific physiological processes; the pancreatic MCPs participate only in alimentary digestion and include carboxypeptidase A and B (A/B subfamily), while others, namely regulatory MCPs or the N/E subfamily, are involved in more selective reactions, mainly in non-digestive tissues and fluids, acting on blood coagulation/fibrinolysis, inflammation and local anaphylaxis, pro-hormone and neuropeptide processing, cellular response and others. Another MCP subfamily, is that of succinylglutamate desuccinylase /aspartoacylase, which hydrolyzes N-acetyl-L-aspartate (NAA), and deficiency in which is the established cause of Canavan disease. Another subfamily (referred to as subfamily C) includes an exceptional type of activity in the MCP family, that of dipeptidyl-peptidase activity of gamma-glutamyl-(L)-meso-diaminopimelate peptidase I which is involved in bacterial cell wall metabolism. Length = 271 Score = 25.7 bits (57), Expect = 3.3 Identities = 7/16 (43%), Positives = 10/16 (62%) Query: 31 SKEEQARIEQIRAEAR 46 S E AR++QIR + Sbjct: 17 SPENIARLDQIREDHL 32 Database: CddA Posted date: Feb 4, 2011 9:38 PM Number of letters in database: 6,263,737 Number of sequences in database: 21,609 Lambda K H 0.319 0.132 0.361 Gapped Lambda K H 0.267 0.0752 0.140 Matrix: BLOSUM62 Gap Penalties: Existence: 11, Extension: 1 Number of Sequences: 21609 Number of Hits to DB: 541,542 Number of extensions: 16801 Number of successful extensions: 82 Number of sequences better than 10.0: 1 Number of HSP's gapped: 82 Number of HSP's successfully gapped: 5 Length of query: 51 Length of database: 6,263,737 Length adjustment: 24 Effective length of query: 27 Effective length of database: 5,745,121 Effective search space: 155118267 Effective search space used: 155118267 Neighboring words threshold: 11 Window for multiple hits: 40 X1: 16 ( 7.4 bits) X2: 38 (14.6 bits) X3: 64 (24.7 bits) S1: 41 (21.8 bits) S2: 51 (23.4 bits)