RPS-BLAST 2.2.22 [Sep-27-2009] Database: CddA 21,609 sequences; 6,263,737 total letters Searching..................................................done Query= gi|254780568|ref|YP_003064981.1| hypothetical protein CLIBASIA_02275 [Candidatus Liberibacter asiaticus str. psy62] (70 letters) >gnl|CDD|133201 cd05070, PTKc_Fyn_Yrk, Catalytic domain of the Protein Tyrosine Kinases, Fyn and Yrk. Protein Tyrosine Kinase (PTK) family; Fyn and Yrk kinases; catalytic (c) domain. The PTKc family is part of a larger superfamily that includes the catalytic domains of other kinases such as protein serine/threonine kinases, RIO kinases, and phosphoinositide 3-kinase (PI3K). PTKs catalyze the transfer of the gamma-phosphoryl group from ATP to tyrosine (tyr) residues in protein substrates. Fyn and Yrk are members of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) tyr kinases. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). Src proteins are involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. Fyn, together with Lck, plays a critical role in T-cell signal transduction by phosphorylating ITAM (immunoreceptor tyr activation motif) sequences on T-cell receptors, ultimately leading to the proliferation and differentiation of T-cells. In addition, Fyn is involved in the myelination of neurons, and is implicated in Alzheimer's and Parkinson's diseases. Yrk has been detected only in chickens. It is primarily found in neuronal and epithelial cells and in macrophages. It may play a role in inflammation and in response to injury. Length = 260 Score = 24.6 bits (53), Expect = 6.9 Identities = 9/29 (31%), Positives = 18/29 (62%) Query: 1 MIQIYSPISERFLFVILERMRKKLYGIFL 29 ++Q+Y+ +SE ++++ E M K FL Sbjct: 63 LVQLYAVVSEEPIYIVTEYMSKGSLLDFL 91 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 0.340 0.148 0.426 Gapped Lambda K H 0.267 0.0573 0.140 Matrix: BLOSUM62 Gap Penalties: Existence: 11, Extension: 1 Number of Sequences: 21609 Number of Hits to DB: 837,955 Number of extensions: 37523 Number of successful extensions: 356 Number of sequences better than 10.0: 1 Number of HSP's gapped: 355 Number of HSP's successfully gapped: 48 Length of query: 70 Length of database: 6,263,737 Length adjustment: 41 Effective length of query: 29 Effective length of database: 5,377,768 Effective search space: 155955272 Effective search space used: 155955272 Neighboring words threshold: 11 Window for multiple hits: 40 X1: 15 ( 7.4 bits) X2: 38 (14.6 bits) X3: 64 (24.7 bits) S1: 39 (21.9 bits) S2: 51 (23.8 bits)