About Products Protein Database Contact

ISA2

Gene
ISA2
Protein
Isoamylase 2, chloroplastic
Organism
Arabidopsis thaliana
Length
882 amino acids
Function
Involved in the trimming of pre-amylopectin chains. Accelerates the crystallization of nascent amylopectin molecules during starch synthesis. ISA1 and ISA2 work exclusively together as a multimeric holoenzyme. ISA1-ISA2 removes preferentially branches that are very close to other branches.
Similarity
Belongs to the glycosyl hydrolase 13 family.
Mass
98.884 kDa
Sequence
MAAWSPSVGIGSCCLNNGITRTWKFPSARLFTGRKNKIKLGSETLMFTRKRFMGDLVTSALQSYQFSKICASKTSIELREALSSRRAEADDLKKVTSYSFRTKAGALVKVKVEKKREKYSILVYVSSLELSGDDKSRLVMVWGVYRSDSSCFLPLDFENSSQDSQTHTTETTFVKSSLSELMLGLEFDGKESPFYLSFHLKLVSGRDPDGQEMLTHRDTDFCIPVGFTAGHPLPLGLSSGPDDDSWNFSFFSRSSTNVVLCLYDDSTTDKPALELDLDPYVNRTGDVWHASVDNTWDFVRYGYRCKETAHSKEDVDVEGEPIVLDPYATVVGKSVSQKYLGSLSKSPSFDWGEDVSPNIPLEKLLVYRLNVKGFTQHRSSKLPSNVAGTFSGVAEKVSHLKTLGTNAVLLEPIFSFSEQKGPYFPFHFFSPMDIYGPSNSLESAVNSMKVMVKKLHSEGIEVLLEVVFTHTADSGALRGIDDSSYYYKGRANDLDSKSYLNCNYPVVQQLVLESLRYWVTEFHVDGFCFINASSLLRGVHGEQLSRPPLVEAIAFDPLLAETKLIADCWDPLEMMPKEVRFPHWKRWAELNTRYCRNVRNFLRGRGVLSDLATRICGSGDVFTDGRGPAFSFNYISRNSGLSLVDIVSFSGPELASELSWNCGEEGATNKSAVLQRRLKQIRNFLFIQYISLGVPVLNMGDECGISTRGSPLLESRKPFDWNLLASAFGTQITQFISFMTSVRARRSDVFQRRDFLKPENIVWYANDQTTPKWEDPASKFLALEIKSESEEEETASLAEPNEPKSNDLFIGFNASDHPESVVLPSLPDGSKWRRLVDTALPFPGFFSVEGETVVAEEPLQQLVVYEMKPYSCTLFETINTTA

Gene
ISA2
Protein
Isoamylase 2, chloroplastic
Organism
Oryza sativa subsp. japonica
Length
800 amino acids
Function
Starch-debranching enzyme involved in amylopectin biosynthesis in endosperm. Functions by removing excess branches or improper branches that interfere with the formation of double helices of the cluster chains of amylopectin and crystallization of starch (PubMed:16953433, PubMed:21436381). Works together with ISA1 as heterooligomer. The heterooligomer ISA1 and ISA2 possesses higher affinity than the ISA1 homooligomer for various branched polyglucans in vitro, but no marked differences exist in chain preferences for debranching of amylopectin and phytoglycogen between these forms (PubMed:16953433, PubMed:21436381).
Similarity
Belongs to the glycosyl hydrolase 13 family.
Mass
86.53 kDa
Sequence
MASLPAPPTPLGSCPRGRGGGRVVARPRRAGLACAARSCYRFRTDDDGVVDVAVSGEDGDGGGGGYAVSVEVPGTRGREGGLVLRASGSGEGVPLAPAAGGASLAAELSFDPTRAPFYLSFLLTDASGAEIRTHRKTSFRVPVGVGPGSPAPLGMSISGDGAVNFAVYSKNANAVSLYLYAAAVGGGGGDEPALEIDLDPYIHRTGNVWHVSLASVDGYVSYAFCCGGIRRPLLDPYAKVIGDFVSSNSVYDEGVTAPSMRCFASLAIAPSYNWGRDRHPRLPLEKLVVYRANVALFTKDRSSGLPDDAAGTFTGLSAKVEHFRSLGVNAILLEPVFPFHQVKGPYFPYHFFSPMNLYSSKGLSVSAIKSMKDMVRVMHRNGIEVLLEVVFTHTAEGESECQTISMRGIDNSSYYIANGIAGCKASILNCNHPVTQKLILDSLRHWVLDFHVDGFCFINAPFLVRGPGGEYLSRPPLLEAITFDPVLSMTKIIADPWSPLDISNVQFPFPHWKRWAEVNTRFSIDVRKFLKREALISDLATRLCGSGDLFSTRGPAFSFNHVSRNSGLSLVDLVSFSNDDLLSESSWNCGEEGPSENSAVLQTRLRQIRNFLFILFVSLGVPVLNMGDECGHSAAGSVSYKDRGPLNWRGMKTTFVKEVTGFISFLTALRSRRGDIFQRREFLKLENIHWYGSDLCEPGWDDPTSNFLCMHINAEVDEMAADSVRGDLYICFNANEESVSAALPALAEGSVWLRLVDTSLAFPGFFATESNPKVQQVPGLSSYHVEAHTCVLFESKSALA

Gene
isa2
Protein
Iron-sulfur assembly protein 2
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Length
205 amino acids
Function
Involved in the assembly of mitochondrial and cytoplasmic iron-sulfur proteins. Probably involved in the binding of an intermediate of Fe/S cluster assembly (By similarity).
Similarity
Belongs to the HesB/IscA family.
Mass
23.239 kDa
Sequence
MLMKSRVNLLFKGPFFFRERCFQTLLNPVIAIRQLSHGSLRNSRSCRIDAKSNTLTKEIFPKINNEFKIKNRFYSSKLANDQFTLQEQCDEKGIPFILYVKDSAKKQLEKIAERKPEENSVLRVTVDGGGCHGYQVSFRMDNKIGNADTVFVRGKARVVADNISLPLISGSEIEYTNELIGSSFQLLNNPRAKTSCGCNVSFDVE

Gene
ISA2
Protein
Iron-sulfur assembly protein 2
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Length
185 amino acids
Function
Involved in the assembly of mitochondrial and cytoplasmic iron-sulfur proteins. Probably involved in the binding of an intermediate of Fe/S cluster assembly.
Similarity
Belongs to the HesB/IscA family.
Mass
20.877 kDa
Sequence
MQAKLLFTRLNFRRPSTTLRQFPLTCFLFHSKAFYSDLVTKEPLITPKRIINKTPGLNLSISERASNRLAEIYRNSKENLRISVESGGCHGFQYNLTLEPATKPDIKNDVKDKEFSDDLDDDDSKDIIYVLPEDKGRVIIDSKSLNILNNTTLTYTNELIGSSFKIINGSLKSSCGCGSSFDIEN