Literature summary for 2.7.1.134 extracted from

Jiang, M.; Liu, Y.; Liu, Y.; Tan, Y.; Huang, J.; Shu, Q.
Mutation of inositol 1,3,4-trisphosphate 5/6-kinase6 impairs plant growth and phytic acid synthesis in rice (2019), Plants (Basel), 8, 114 .

Search for more literature for 2.7.1.134

Application

Application	Comment	Organism
agriculture	OsITPK6 can be a desirable target of mutagenesis for breeding yield-competitive lpa rice	Oryza sativa Japonica Group

Cloned(Commentary)

Cloned (Comment)	Organism
gene ositpk6, sequence comparisons, expression analysis	Oryza sativa Japonica Group

Protein Variants

Protein Variants	Comment	Organism
additional information	OsITPK6 mutants are generated by CRISPR/Cas9-mediated mutagenesis, generation of 23 hygromycin phosphotransferase (HPT)-positive T0 plants transformed with the CRISPR/Cas9 vector pH-itpk6. Genotyping of gene ITPK6, the ositpk6_1 (a 6-nt in-frame deletion) mutation results in the loss of two amino acids at positions 91 to 92. In contrast, all the other three mutations, i.e. ositpk6_2 (a 1-nt insertion), ositpk6_3 (a 5-nt deletion), and ositpk6_4 (a 2-nt deletion), generate a premature stop codon almost right after the mutation site and, hence, significantly shorten the encoded proteins. Consequently, the ositpk6_2, _3 and _4 mutant alleles are predicted to produce proteins of only 105, 103, and 104 amino acids, respectively. The two amino acids missing in the ositpk6_1 mutant are located in a highly conserved segment, suggesting the mutation of ositpk6_1 might have a potential functional consequence. Plant growth of mutants ositpk6_2, _3, and _4 is significantly impaired. Their panicles are significantly shorter (30.1%, 28.8%, and 29.1%, respectively) compared to wild-type parental cultivar Xidao 1, phenotypes, overview. Numbers and lengths of root from mutant plants are reduced under salt stress compared to wild-type	Oryza sativa Japonica Group
P522L	ositpk6 mutant, the line with the P522L amino acid substitution has agronomic performance (seed weight, germination, and seedling growth) similar to that of its wild-type parent	Oryza sativa Japonica Group

Metals/Ions

Metals/Ions	Comment	Organism	Structure
Mg2+	required	Oryza sativa Japonica Group

Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
ATP + 1D-myo-inositol 3,4,5,6-tetrakisphosphate	Oryza sativa Japonica Group	-	ADP + 1D-myo-inositol 1,3,4,5,6-pentakisphosphate	-	?

Organism

Organism	UniProt	Comment	Textmining
Oryza sativa Japonica Group	Q0J0B2	-	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
ATP + 1D-myo-inositol 3,4,5,6-tetrakisphosphate	-	Oryza sativa Japonica Group	ADP + 1D-myo-inositol 1,3,4,5,6-pentakisphosphate	-	?

Synonyms

Synonyms	Comment	Organism
inositol 1,3,4-trisphosphate 5/6-kinase	-	Oryza sativa Japonica Group
inositol 1,3,4-trisphosphate 5/6-kinase6	-	Oryza sativa Japonica Group
ITPK	-	Oryza sativa Japonica Group
More	see also EC 2.7.1.159	Oryza sativa Japonica Group
Os09g0518700	locus name	Oryza sativa Japonica Group
OsITPK6	-	Oryza sativa Japonica Group

Cofactor

Cofactor	Comment	Organism	Structure
ATP	-	Oryza sativa Japonica Group

Expression

Organism	Comment	Expression
Oryza sativa Japonica Group	there is no significant difference in the number of leaves and roots with or without stress treatment between ositpk6_1 and wild-type	additional information

General Information

General Information	Comment	Organism
evolution	OsITPK6 belongs to subgroup III, with 12 exons and 11 introns, of the OsITPK gene family. ITPK6 is a unique gene in the ITPK gene family	Oryza sativa Japonica Group
malfunction	mutation of OsITPK6 not only significantly reduces the accumulation of IP6 in rice grains but also impairs plant growth and tolerance to abiotic stress. Nucleotide substitutions of gene OsITPK6 can significantly lower the phytic acid content in rice grains. Impact of ositpk6 mutations on plant growth and seed germination, panicle phenotype of mutant OsITPK6 and wild-type plants, overview. There is no significant difference in the number of leaves and roots with or without stress treatment between ositpk6_1 and wild-type	Oryza sativa Japonica Group

Use of this online version of BRENDA is free under the CC BY 4.0 license. See terms of use for full details.

Release 2023.1 (January 2023)