>TIGR02415 23BDH acetoin reductases; InterPro: IPR014007 One member of this family, as characterised in Klebsiella terrigena , is able to interconvert acetoin + NADH with meso-2,3-butanediol + NAD(+). It is also capable of irreversible reduction of diacetyl with NADH to acetoin. There has been a reuctance to classify the enzyme as either 1.1.1.4 from EC, which is (R,R)-butanediol dehydrogenase, or 1.1.1.5 from EC, which is acetoin dehydrogenase without a specified stereochemistry . Another member of this family, from Corynebacterium glutamicum (Brevibacterium flavum), is called L-2,3-butanediol dehydrogenase . This enzyme is a homotetramer in the family of short chain dehydrogenases (IPR002198 from INTERPRO). .

Probab=98.68 E-value=1.4e-08 Score=72.24 Aligned_cols=160 Identities=22% Similarity=0.248 Sum_probs=112.2 Q ss_pred CEEEEECCCCHHHHHHHHHHHHCCCEEEEEECCC-CCCH-----HHH---CCCCEEEEECCCHHHHHHHHHHC-----CC Q ss_conf 4799968788277999999998798899992687-6752-----130---23867984268999999998756-----98 Q gi|254780328|r 4 KNVLVVGGAGYIGAHTCRVLYERGFLPIVLDNLS-SGHA-----EFV---LWGPLEQVDICDYTNLRAVFAKY-----QP 69 (333) Q Consensus 4 kkIlItG~tGfiGs~l~~~L~~~g~~v~~~d~~~-~~~~-----~~~---~~~~~~~~Di~d~~~l~~~~~~~-----~~ 69 (333) T Consensus 1 KvAlvTGgAqGIG~gIa~RLa~DGF~vav~D~n~Qe~~A~~t~~~i~~~G~~Ava~~~DV~~k~~~~~~i~~A~~~fG~f 80 (258) T TIGR02415 1 KVALVTGGAQGIGKGIAERLAKDGFNVAVADLNNQEETAKETAKEINQKGGKAVAYKLDVSDKSQVFEAIDQAVEKFGGF 80 (258) T ss_pred CEEEEECCCCCHHHHHHHHHHHCCCEEEEECCCCCHHHHHHHHHHHHHCCCEEEEEECCCCCHHHHHHHHHHHHHHCCCC T ss_conf 92678568543238999999834613787256663689999999998669737998647345678999999999970893 Q ss_pred CEEEECHHHCCCC----CCCCCCEEEEEECCCCCCCCCCCCCC----CCC--CCCCCCCCCC-CCCCCCCCCCCCCCCCC Q ss_conf 8999571440112----23431001233012333222112222----222--2222233332-22222222222222222 Q gi|254780328|r 70 ASVMHFAGLTNIS----ESVKNPSLFYEINIKGSFNLIATAIE----SNV--RRFIFSSTCA-TYGIPHNTIITENDPQE 138 (333) Q Consensus 70 d~ViHlAa~~~~~----~~~~~p~~~~~~Nv~gt~~ll~~~~~----~~~--~~~i~~SS~~-vYG~~~~~~~~E~~~~~ 138 (333) T Consensus 81 dV~VNNAGva~~~pi~~iteE~l~k~y~vNV~GvlfGIQAA~~~Fkk~~~~tGkIINAaSiAg~~G~p~----------- 149 (258) T TIGR02415 81 DVMVNNAGVAPVTPILEITEEELEKLYNVNVKGVLFGIQAAARQFKKQGHGTGKIINAASIAGVEGNPV----------- 149 (258) T ss_pred EEEEECCCCCCCCCCCCCCCHHHHHHHCCHHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHCCHH----------- T ss_conf 278652410002774546700342343010145667889999877871689871157765755404414----------- Q ss_pred CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC Q ss_conf 2222222222333222222222222222222222222222 Q gi|254780328|r 139 SITPYGYTKYVVERELLQHNKVNGLRSVVLRYFNAAGATL 178 (333) Q Consensus 139 p~~~Yg~sK~~~E~~~~~~~~~~~~~~~~~R~~~vyGp~~ 178 (333) T Consensus 150 -ls~YsstKFAVRgLTQtAA~eLA~~GITV---NaYcPGi 185 (258) T TIGR02415 150 -LSAYSSTKFAVRGLTQTAAQELAPKGITV---NAYCPGI 185 (258) T ss_pred -HHHHHHHHHHHHHHHHHHHHHHHHCCCEE---CCCCCCC T ss_conf -67777678888765799999975248737---4408886

HHsearch alignment for GI: 254780328 and conserved domain: TIGR02415