Regulates carpel specification in flower development. Severe or intermediate mutation in DL causes complete or partial homeotic conversion of carpels into stamens without affecting the identities of other floral organs. Interacts antagonistically with class B genes and controls floral meristem determinacy. Regulates midrib formation in leaves probably by inducing cell proliferation in the central region of the leaf. Oryza sativa subsp. japonica (taxid: 39947)
>sp|Q8L925|CRC_ARATH Protein CRABS CLAW OS=Arabidopsis thaliana GN=CRC PE=1 SV=2
Transcription factor required for the initiation of nectary development. Also involved in suppressing early radial growth of the gynoecium, in promoting its later elongation and in fusion of its carpels by regulating both cell division and expansion. Establishes the polar differentiation in the carpels by specifying abaxial cell fate in the ovary wall. Regulates both cell division and expansion.
Involved in the abaxial cell fate determination during embryogenesis and organogenesis. Required during flower formation and development, particularly for the patterning of floral organs. Positive regulator of class B (AP3 and PI) activity in whorls 2 and 3. Negative regulator of class B activity in whorl 1 and of SUP activity in whorl 3. Interacts with class A proteins (AP1, AP2 and LUG) to repress class C (AG) activity in whorls 1 and 2. Contributes to the repression of KNOX genes (STM, KNAT1/BP and KNAT2) to avoid ectopic meristems. Binds DNA without sequence specificity. In vitro, can compete and displace the AP1 protein binding to DNA containing CArG box.
Arabidopsis thaliana (taxid: 3702)
Close Homologs in the Non-Redundant Database Detected by BLAST
Score = 34.5 bits (80), Expect = 0.001
Identities = 11/28 (39%), Positives = 14/28 (50%)
Query: 84 RLPSAYNRFMKEEIQRIKAANPEIPHRE 111
R SAY F +E +KA NP + E
Sbjct: 3 RPLSAYFLFSQEHRAEVKAENPGLSVGE 30
HMGs bind to the minor groove of DNA and have been classified by DNA binding preferences. Two phylogenically distinct groups of Class I proteins bind DNA in a sequence specific fashion and contain a single HMG box. One group (SOX-TCF) includes transcription factors, TCF-1, -3, -4; and also SRY and LEF-1, which bind four-way DNA junctions and duplex DNA targets. The second group (MATA) includes fungal mating type gene products MC, MATA1 and Ste11. Class II and III proteins (HMGB-UBF) bind DNA in a non-sequence specific fashion and contain two or more tandem HMG boxes. Class II members include non-histone chromosomal proteins, HMG1 and HMG2, which bind to bent or distorted DNA such as four-way DNA junctions, synthetic DNA cruciforms, kinked cisplatin-modified DNA, DNA bulges, cross-overs in supercoiled DNA, and can cause looping of linear DNA. Class III members include nucleolar and mitochondrial transcription factors, UBF and mtTF1, which bind four-way DNA junctions. Length = 66
>gnl|CDD|238686 cd01390, HMGB-UBF_HMG-box, HMGB-UBF_HMG-box, class II and III members of the HMG-box superfamily of DNA-binding proteins
Score = 33.8 bits (78), Expect = 0.002
Identities = 10/28 (35%), Positives = 15/28 (53%)
Query: 84 RLPSAYNRFMKEEIQRIKAANPEIPHRE 111
R SAY F +E+ ++K NP+ E
Sbjct: 3 RPLSAYFLFSQEQRPKLKKENPDASVTE 30
These proteins bind the minor groove of DNA in a non-sequence specific fashion and contain two or more tandem HMG boxes. Class II members include non-histone chromosomal proteins, HMG1 and HMG2, which bind to bent or distorted DNA such as four-way DNA junctions, synthetic DNA cruciforms, kinked cisplatin-modified DNA, DNA bulges, cross-overs in supercoiled DNA, and can cause looping of linear DNA. Class III members include nucleolar and mitochondrial transcription factors, UBF and mtTF1, which bind four-way DNA junctions. Length = 66
DUF3133: Protein of unknown function (DUF3133); In
80.88
>PF04690 YABBY: YABBY protein; InterPro: IPR006780 YABBY proteins are a group of plant-specific transcription factors involved in the specification of abaxial polarity in lateral organs such as leaves and floral organs [, ]
These proteins bind the minor groove of DNA in a non-sequence specific fashion and contain two or more tandem HMG boxes. Class II members include non-histone chromosomal proteins, HMG1 and HMG2, which bind to bent or distorted DNA such as four-way DNA junctions, synthetic DNA cruciforms, kinked cisplatin-modified DNA, DNA bulges, cross-overs in supercoiled DNA, and can cause looping of linear DNA. Class III members include nucleolar and mitochondrial transcription factors, UBF and mtTF1, which bind four-way DNA junctions.
>cd01388 SOX-TCF_HMG-box SOX-TCF_HMG-box, class I member of the HMG-box superfamily of DNA-binding proteins
These proteins contain a single HMG box, and bind the minor groove of DNA in a highly sequence-specific manner. Members include SRY and its homologs in insects and vertebrates, and transcription factor-like proteins, TCF-1, -3, -4, and LEF-1. They appear to bind the minor groove of the A/T C A A A G/C-motif.
>PF00505 HMG_box: HMG (high mobility group) box; InterPro: IPR000910 High mobility group (HMG or HMGB) proteins are a family of relatively low molecular weight non-histone components in chromatin
HMG1 (also called HMG-T in fish) and HMG2 are two highly related proteins that bind single-stranded DNA preferentially and unwind double-stranded DNA. Although they have no sequence specificity, they have a high affinity for bent or distorted DNA, and bend linear DNA. HMG1 and HMG2 contain two DNA-binding HMG-box domains (A and B) that show structural and functional differences, and have a long acidic C-terminal domain rich in aspartic and glutamic acid residues. The acidic tail modulates the affinity of the tandem HMG boxes in HMG1 and 2 for a variety of DNA targets. HMG1 and 2 appear to play important architectural roles in the assembly of nucleoprotein complexes in a variety of biological processes, for example V(D)J recombination, the initiation of transcription, and DNA repair []. The profile in this entry describing the HMG-domains is much more general than the signature. In addition to the HMG1 and HMG2 proteins, HMG-domains occur in single or multiple copies in the following protein classes; the SOX family of transcription factors; SRY sex determining region Y protein and related proteins []; LEF1 lymphoid enhancer binding factor 1 []; SSRP recombination signal recognition protein; MTF1 mitochondrial transcription factor 1; UBF1/2 nucleolar transcription factors; Abf2 yeast ARS-binding factor []; and Saccharomyces cerevisiae transcription factors Ixr1, Rox1, Nhp6a, Nhp6b and Spp41.; GO: 0003677 DNA binding; PDB: 1I11_A 1J3C_A 1J3D_A 1WZ6_A 1WGF_A 2D7L_A 1GT0_D 3U2B_C 2CRJ_A 2CS1_A ....
>cd00084 HMG-box High Mobility Group (HMG)-box is found in a variety of eukaryotic chromosomal proteins and transcription factors
HMGs bind to the minor groove of DNA and have been classified by DNA binding preferences. Two phylogenically distinct groups of Class I proteins bind DNA in a sequence specific fashion and contain a single HMG box. One group (SOX-TCF) includes transcription factors, TCF-1, -3, -4; and also SRY and LEF-1, which bind four-way DNA junctions and duplex DNA targets. The second group (MATA) includes fungal mating type gene products MC, MATA1 and Ste11. Class II and III proteins (HMGB-UBF) bind DNA in a non-sequence specific fashion and contain two or more tandem HMG boxes. Class II members include non-histone chromosomal proteins, HMG1 and HMG2, which bind to bent or distorted DNA such as four-way DNA junctions, synthetic DNA cruciforms, kinked cisplatin-modified DNA, DNA bulges, cross-overs in supercoiled DNA, and can cause looping of linear DNA. Class III member
These proteins contain a single HMG box, and bind the minor groove of DNA in a highly sequence-specific manner. Members include the fungal mating type gene products MC, MATA1 and Ste11.
>PTZ00199 high mobility group protein; Provisional
>PF06244 DUF1014: Protein of unknown function (DUF1014); InterPro: IPR010422 This family consists of several hypothetical eukaryotic proteins of unknown function
>PF10122 Mu-like_Com: Mu-like prophage protein Com; InterPro: IPR019294 Members of this entry belong to the Com family of proteins that act as translational regulators of mom [, ]
>1ckt_A High mobility group 1 protein; high-mobility group domain, BENT DNA, protein-drug-DNA compl regulation-DNA complex; HET: DNA 5IU; 2.50A {Rattus norvegicus} SCOP: a.21.1.1 PDB: 1j3x_A
>1cg7_A Protein (NON histone protein 6 A); HMG BOX, DNA bending, DNA recognition, chromatin, DNA binding protein; NMR {Saccharomyces cerevisiae} SCOP: a.21.1.1 PDB: 1j5n_A 1lwm_A
>2lhj_A High mobility group protein homolog NHP1; structural genomics, seattle structural genomics center for infectious disease, ssgcid; NMR {Babesia bovis}
class: All alpha proteins
fold: HMG-box
superfamily: HMG-box
family: HMG-box
domain: High mobility group protein 1, HMG1
species: Rat (Rattus norvegicus) [TaxId: 10116]
