HHsearch alignment for GI: 254780794 and conserved domain: TIGR00456
>TIGR00456 argS arginyl-tRNA synthetase; InterPro: IPR001278 The aminoacyl-tRNA synthetases (6.1.1. from EC) catalyse the attachment of an amino acid to its cognate transfer RNA molecule in a highly specific two-step reaction. These proteins differ widely in size and oligomeric state, and have limited sequence homology . The 20 aminoacyl-tRNA synthetases are divided into two classes, I and II. Class I aminoacyl-tRNA synthetases contain a characteristic Rossman fold catalytic domain and are mostly monomeric . Class II aminoacyl-tRNA synthetases share an anti-parallel beta-sheet fold flanked by alpha-helices , and are mostly dimeric or multimeric, containing at least three conserved regions , , . However, tRNA binding involves an alpha-helical structure that is conserved between class I and class II synthetases. In reactions catalysed by the class I aminoacyl-tRNA synthetases, the aminoacyl group is coupled to the 2'-hydroxyl of the tRNA, while, in class II reactions, the 3'-hydroxyl site is preferred. The synthetases specific for arginine, cysteine, glutamic acid, glutamine, isoleucine, leucine, methionine, tyrosine, tryptophan and valine belong to class I synthetases; these synthetases are further divided into three subclasses, a, b and c, according to sequence homology. The synthetases specific for alanine, asparagine, aspartic acid, glycine, histidine, lysine, phenylalanine, proline, serine, and threonine belong to class-II synthetases . Arginyl-tRNA synthetase (6.1.1.19 from EC) has been crystallized and preliminary X-ray crystallographic analysis of yeast arginyl-tRNA synthetase-yeast tRNAArg complexes is available . ; GO: 0000166 nucleotide binding, 0004814 arginine-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006420 arginyl-tRNA aminoacylation, 0005737 cytoplasm.
Probab=93.53 E-value=0.095 Score=31.82 Aligned_cols=74 Identities=18% Similarity=0.123 Sum_probs=50.5
Q ss_pred CEEHHHHHHHHHHHHHHHHHHHHHHHCHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Q ss_conf 01112121268999999999998761401100000123211134574314322347564303356774111321345544
Q gi|254780794|r 148 HVPVGEDQRQHLEITRLIAQRFNTEFERKIKEVAQKYAQEEQYSKGFFPIIEGLIDSSASRIRSLRDASKKMSKSDSSDF 227 (355)
Q Consensus 148 ~VpVG~DQ~~HieltRdiA~rfN~~yg~~~~~~~~~~~~~~~~~~~~~~~p~~~i~~~~~ri~~L~~~~~KMSKS~~~~~ 227 (355)
T Consensus 353 i~V~gsdh~~h~~q~~~~~e~LG~~~~~-----------------------~~L~~~~f~~v~~~~--GKkmkTR~G--- 404 (600)
T TIGR00456 353 IYVWGSDHKLHIAQVFAILEKLGYLSKK-----------------------KELEHLEFGMVPLGS--GKKMKTRRG--- 404 (600)
T ss_pred EEEEECCHHHHHHHHHHHHHHCCCCCCC-----------------------CCEEEEEEEEEECCC--CCCCCCCCC---
T ss_conf 9874051888999999999971653788-----------------------616899876432578--885434556---
Q ss_pred CCCCCCCCHHHHHHHHHHHHCC
Q ss_conf 5200145388999998752001
Q gi|254780794|r 228 SRINLLDNPDIIAKKIQKAKTD 249 (355)
Q Consensus 228 s~I~l~D~~e~I~kKI~ka~TD 249 (355)
T Consensus 405 ~~i~ld~ll~e~~~RA~~~~~~ 426 (600)
T TIGR00456 405 NVISLDNLLDEASKRAGNVITK 426 (600)
T ss_pred CCEEHHHHHHHHHHHHHHHHHH
T ss_conf 6022344689999999999961