1arb

<table><tr><td colspan='2'>[[1arb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"achromobacter_lyticus"_isono_et_al._1972 "achromobacter lyticus" isono et al. 1972]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ARB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ARB FirstGlance]. <br>

</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Lysyl_endopeptidase Lysyl endopeptidase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.50 3.4.21.50] </span></td></tr>

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== Publication Abstract from PubMed ==

The complete amino acid sequence of Achromobacter lyticus protease I (EC 3.4.21.50), which specifically hydrolyzes lysyl peptide bonds, has been established. This has been achieved by sequence analysis of the reduced and S-carboxymethylated protease and of peptides obtained by enzymatic digestion with Achromobacter protease I itself and Staphylococcus aureus V8 protease and by chemical cleavage with cyanogen bromide. The protease consists of 268 residues with three disulfide bonds, which have been assigned to Cys6-Cys216, Cys12-Cys80, and Cys36-Cys58. Comparison of the amino acid sequence of Achromobacter protease and other serine proteases of bacterial and mammalian origins has revealed that Achromobacter protease I is a mammalian-type serine protease of which the catalytic triad comprises His57, Asp113, and Ser194. It has also been shown that the protease has 9- and 26-residue extensions of the peptide chain at the N and C termini, respectively, and overall sequence homology is as low as 20% with bovine trypsin. The presence of a disulfide bridge between the N-terminal extension Cys6 and Cys216 close to the putative active site in the C-terminal region is thought to be responsible for the generation of maximal proteolytic function in the pH range 8.5-10.7 and enhanced stability to denaturation.

The primary structure and structural characteristics of Achromobacter lyticus protease I, a lysine-specific serine protease.,Tsunasawa S, Masaki T, Hirose M, Soejima M, Sakiyama F J Biol Chem. 1989 Mar 5;264(7):3832-9. PMID:2492988<ref>PMID:2492988</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Achromobacter lyticus isono et al. 1972]]

[[Category: Katsube, Y]]

[[Category: Kitagawa, Y]]