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ABF2

Gene
abf2
Protein
Intracellular exo-alpha-L-arabinofuranosidase 2
Organism
Bacillus subtilis (strain 168)
Length
495 amino acids
Function
Involved in the degradation of arabinan and is a key enzyme in the complete degradation of the plant cell wall. Catalyzes the cleavage of terminal alpha-L-arabinofuranosyl residues in different hemicellulosic homopolysaccharides (branched and debranched arabinans) and heteropolysaccharides (arabinoxylans). It is able to hydrolyze the alpha-(1->5)-glycosidic linkages of linear alpha-(1->5)-L-arabinan (debranched), sugar beet arabinan (branched) and wheat arabinoxylan. Moreover, it displays higher activity towards branched arabinan, a molecule comprising a backbone of alpha-(1->5)-linked L-arabinofuranosyl residues decorated with alpha-(1->2)-, and alpha-(1->3)-linked L-arabinofuranosyl units, than towards debranched arabinan. In addition, arabinoxylan, which has L-arabinofuranose residues attached to the main chain by alpha-(1->2)-and/or alpha-(1->3)-glycosidic linkages, is preferred to linear alpha-(1->5)-L-arabinan.
Similarity
Belongs to the glycosyl hydrolase 51 family.
Mass
56.475 kDa
Sequence
MSEHQAVIQTDIAKGTINKNIYGHFAEHLGRGIYEGIWVGTDSDIPNINGIRKDVLEALKQLHIPVLRWPGGCFADEYHWANGVGDRKTMLNTHWGGTIESNEFGTHEFMMLCELLECEPYICGNVGSGTVQEMSEWIEYMTFEEGTPMSDWRKQNGREEPWKLKYFGVGNENWGCGGNMHPEYYADLYRRFQTYVRNYSGNDIYKIAGGANVDDFNWTDVLMKKAAGLMDGLSLHYYTIPGDFWKGKGSATEFTEDEWFITMKKAKYIDELIQKHGTIMDRYDPEQRVGLIIDEWGTWFDPEPGTNPGFLYQQNTIRDALVAASHFHIFHQHCRRVQMANIAQTVNVLQAMILTEGERMLLTPTYHVFNMFKVHQDASLLATETMSADYEWNGETLPQISISASKQAEGDINITICNIDHQNKAEAEIELRGLHKAADHSGVILTAEKMNAHNTFDDPHHVKPESFRQYTLSKNKLKVKLPPMSVVLLTLRADS

Gene
ABF2
Protein
ABSCISIC ACID-INSENSITIVE 5-like protein 5
Organism
Arabidopsis thaliana
Length
416 amino acids
Function
Involved in ABA and stress responses and acts as a positive component of glucose signal transduction. Functions as transcriptional activator in the ABA-inducible expression of rd29B. Binds specifically to the ABA-responsive element (ABRE) of the rd29B gene promoter.
Similarity
Belongs to the bZIP family. ABI5 subfamily.
Mass
44.165 kDa
Sequence
MDGSMNLGNEPPGDGGGGGGLTRQGSIYSLTFDEFQSSVGKDFGSMNMDELLKNIWSAEETQAMASGVVPVLGGGQEGLQLQRQGSLTLPRTLSQKTVDQVWKDLSKVGSSGVGGSNLSQVAQAQSQSQSQRQQTLGEVTLEEFLVRAGVVREEAQVAARAQIAENNKGGYFGNDANTGFSVEFQQPSPRVVAAGVMGNLGAETANSLQVQGSSLPLNVNGARTTYQQSQQQQPIMPKQPGFGYGTQMGQLNSPGIRGGGLVGLGDQSLTNNVGFVQGASAAIPGALGVGAVSPVTPLSSEGIGKSNGDSSSLSPSPYMFNGGVRGRKSGTVEKVVERRQRRMIKNRESAARSRARKQAYTVELEAEVAKLKEENDELQRKQARIMEMQKNQETEMRNLLQGGPKKKLRRTESGPW

Gene
ABF2
Protein
ARS-binding factor 2, mitochondrial
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Length
183 amino acids
Function
Specific binding to the autonomously replicating sequence 1 (ARS1). Interaction with regulatory regions: probably involved in compacting the mitochondrial genome. It might play a positive role in gene expression and replication.
Mass
21.562 kDa
Sequence
MNSYSLLTRSFHESSKPLFNLASTLLKASKRTQLRNELIKQGPKRPTSAYFLYLQDHRSQFVKENPTLRPAEISKIAGEKWQNLEADIKEKYISERKKLYSEYQKAKKEFDEKLPPKKPAGPFIKYANEVRSQVFAQHPDKSQLDLMKIIGDKWQSLDQSIKDKYIQEYKKAIQEYNARYPLN