Basic leucine zipper (bZIP) domain of Activating Transcription Factor-4 (ATF-4) and similar proteins: a DNA-binding and dimerization domain; ATF-4 was also isolated and characterized as the cAMP-response element binding protein 2 (CREB2). It is a Basic leucine zipper (bZIP) transcription factor that has been reported to act as both an activator or repressor. It is a critical component in both the unfolded protein response (UPR) and amino acid response (AAR) pathways. Under certain stress conditions, ATF-4 transcription is increased; accumulation of ATF-4 induces the expression of genes involved in amino acid metabolism and transport, mitochondrial function, redox chemistry, and others that ensure protein synthesis and recovery from stress. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 33469976 279 DKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEEV 341
Cdd:cd14692   1 EKKERKREQNKNAATRYRQKKREEKEELLSEEEELEDRNRELKDEVEELQREINYLKDLLREV 63

Basic leucine zipper (bZIP) domain of Activating Transcription Factor-4 (ATF-4) and similar proteins: a DNA-binding and dimerization domain; ATF-4 was also isolated and characterized as the cAMP-response element binding protein 2 (CREB2). It is a Basic leucine zipper (bZIP) transcription factor that has been reported to act as both an activator or repressor. It is a critical component in both the unfolded protein response (UPR) and amino acid response (AAR) pathways. Under certain stress conditions, ATF-4 transcription is increased; accumulation of ATF-4 induces the expression of genes involved in amino acid metabolism and transport, mitochondrial function, redox chemistry, and others that ensure protein synthesis and recovery from stress. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 33469976 279 DKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEEV 341
Cdd:cd14692   1 EKKERKREQNKNAATRYRQKKREEKEELLSEEEELEDRNRELKDEVEELQREINYLKDLLREV 63

basic region leucin zipper;

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 33469976    276 EKLDKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEE 340
Cdd:smart00338   1 EEDEKRRRRRERNREAARRSRERKKAEIEELERKVEQLEAENERLKKEIERLRRELEKLKSELEE 65

MAEBL; Provisional

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33469976   270 AAKVKGEKLDKKLKKMEQNKTAATRYRQ--KKRAEQEALTGECK----ELEKKNEALKERADSL------AKEIQYLKDL 337
Cdd:PTZ00121 1347 AAKAEAEAAADEAEAAEEKAEAAEKKKEeaKKKADAAKKKAEEKkkadEAKKKAEEDKKKADELkkaaaaKKKADEAKKK 1426

                          90
                  ....*....|..
gi 33469976   338 IEEVRKARGKKR 349
Cdd:PTZ00121 1427 AEEKKKADEAKK 1438

Basic leucine zipper (bZIP) domain of Activating Transcription Factor-4 (ATF-4) and similar proteins: a DNA-binding and dimerization domain; ATF-4 was also isolated and characterized as the cAMP-response element binding protein 2 (CREB2). It is a Basic leucine zipper (bZIP) transcription factor that has been reported to act as both an activator or repressor. It is a critical component in both the unfolded protein response (UPR) and amino acid response (AAR) pathways. Under certain stress conditions, ATF-4 transcription is increased; accumulation of ATF-4 induces the expression of genes involved in amino acid metabolism and transport, mitochondrial function, redox chemistry, and others that ensure protein synthesis and recovery from stress. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 33469976 279 DKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEEV 341
Cdd:cd14692   1 EKKERKREQNKNAATRYRQKKREEKEELLSEEEELEDRNRELKDEVEELQREINYLKDLLREV 63

basic region leucin zipper;

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 33469976    276 EKLDKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEE 340
Cdd:smart00338   1 EEDEKRRRRRERNREAARRSRERKKAEIEELERKVEQLEAENERLKKEIERLRRELEKLKSELEE 65

Basic leucine zipper (bZIP) domain of Activating Transcription Factor-2 (ATF-2) and similar proteins: a DNA-binding and dimerization domain; ATF-2 is a sequence-specific DNA-binding protein that belongs to the Basic leucine zipper (bZIP) family of transcription factors. In response to stress, it activates a variety of genes including cyclin A, cyclin D, and c-Jun. ATF-2 also plays a role in the DNA damage response that is independent of its transcriptional activity. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*....
gi 33469976 280 KKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLI 338
Cdd:cd14687   1 KRKRFLERNRIAASKCRQRKKQWVQQLEEKVRKLESENKALKAEVDKLREEVLDLKNLL 59

Basic region leucine zipper;

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 33469976   280 KKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKE 330
Cdd:pfam07716   1 EYRDRRRKNNEAAKRSREKKKQKEEELEERVKELERENAQLRQKVEQLEKE 51

Basic leucine zipper (bZIP) domain of BATF proteins: a DNA-binding and dimerization domain; Basic leucine zipper (bZIP) transcription factor ATF-like (BATF or SFA2), BATF2 (or SARI) and BATF3 form heterodimers with Jun proteins. They function as inhibitors of AP-1-driven transcription. Unlike most bZIP transcription factors that contain additional domains, BATF and BATF3 contain only the the bZIP DNA-binding and dimerization domain. BATF2 contains an additional C-terminal domain of unknown function. BATF:Jun hetrodimers preferentially bind to TPA response elements (TREs) with the consensus sequence TGA(C/G)TCA, and can also bind to a TGACGTCA cyclic AMP response element (CRE). In addition to negative regulation, BATF proteins also show positive transcriptional activities in the development of classical dendritic cells and T helper cell subsets, and in antibody production. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*..
gi 33469976 279 DKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLK 335
Cdd:cd14701   2 QKKVRRREKNRDAAQRSRQKQTEKADKLHEESESLERANAALRKEIKDLTEELKYLT 58

Basic leucine zipper (bZIP) domain of CCAAT/enhancer-binding protein (CEBP) and similar proteins: a DNA-binding and dimerization domain; CEBPs (or C/EBPs) are Basic leucine zipper (bZIP) transcription factors that regulate the cell cycle, differentiation, growth, survival, energy metabolism, innate and adaptive immunity, and inflammation, among others. They are also associated with cancer and viral disease. There are six CEBP proteins in mammalian cells including CEBPA (alpha), CEBPB (beta), CEBPG (gamma), CEBPD (delta), and CEBPE (epsilon), which all contain highly conserved bZIP domains at their C-termini and variations at their N-terminal regions. Each possesses unique properties to regulate cell type-specific growth and differentiation. The sixth isoform, CEBPZ (zeta), lacks an intact DNA-binding domain and is excluded from this subfamily. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|...
gi 33469976 284 KMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKD 336
Cdd:cd14693   8 KRERNNIAVRKSREKAKQRQLETQQKVQELRKENERLQKRVELLTKELSVLKS 60

Basic leucine zipper (bZIP) domain of Activating Transcription Factor-3 (ATF-3) and similar proteins: a DNA-binding and dimerization domain; ATF-3 is a Basic leucine zipper (bZIP) transcription factor that is induced by various stress signals such as cytokines, genetoxic agents, or physiological stresses. It is implicated in cancer and host defense against pathogens. It negatively regulates the transcription of pro-inflammatory cytokines and is critical in preventing acute inflammatory syndromes. Mice deficient with ATF3 display increased susceptibility to endotoxic shock induced death. ATF3 dimerizes with Jun and other ATF proteins; the heterodimers function either as activators or repressors depending on the promoter context. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*....
gi 33469976 280 KKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLI 338
Cdd:cd14722   1 RRRRRRERNKVAAAKCRNKKKERTDCLQKESEKLETQNAELKRQIEELKNEKQHLIDML 59

Basic leucine zipper (bZIP) domain of Plant G-box binding factor 1 (GBF1)-like transcription factors: a DNA-binding and dimerization domain; This subfamily is composed of plant bZIP transciption factors including Arabidopsis thaliana G-box binding factor 1 (GBF1), Zea mays Opaque-2 and Ocs element-binding factor 1 (OCSBF-1), Triticum aestivum Histone-specific transcription factor HBP1 (or HBP-1a), Petroselinum crispum Light-inducible protein CPRF3 and CPRF6, and Nicotiana tabacum BZI-3, among many others. bZIP G-box binding factors (GBFs) contain an N-terminal proline-rich domain in addition to the bZIP domain. GBFs are involved in developmental and physiological processes in response to stimuli such as light or hormones. Opaque-2 plays a role in affecting lysine content and carbohydrate metabolism, acting indirectly on starch/amino acid ratio. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|
gi 33469976 281 KLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKE 330
Cdd:cd14702   1 RRRRKQSNRESARRSRMRKQAHLEELEAQVEQLRAENSTLRAELNALSQE 50

Basic leucine zipper (bZIP) domain of X-box binding protein 1 (XBP1) and similar proteins: a DNA-binding and dimerization domain; XBP1, a member of the Basic leucine zipper (bZIP) family, is the key transcription factor that orchestrates the unfolded protein response (UPR). It is the most conserved component of the UPR and is critical for cell fate determination in response to ER stress. The inositol-requiring enzyme 1 (IRE1)-XBP1 pathway is one of the three major sensors at the ER membrane that initiates the UPR upon activation. IRE1, a type I transmembrane protein kinase and endoribonuclease, oligomerizes upon ER stress leading to its increased activity. It splices the XBP1 mRNA, producing a variant that translocates to the nucleus and activates its target genes, which are involved in protein folding, degradation, and trafficking. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*.
gi 33469976 280 KKLKkmeqNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLK 335
Cdd:cd14691   7 RKLK----NRVAAQTARDRKKARMDELEERVRELEEENQKLRAENESLRARNEDLL 58

Uncharacterized N-terminal coiled-coil domain of peptidoglycan hydrolase CwlO [Function unknown];

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 33469976 269 VAAKVKGEKLDKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEEVRKARGK 347
Cdd:COG3883  12 AFADPQIQAKQKELSELQAELEAAQAELDALQAELEELNEEYNELQAELEALQAEIDKLQAEIAEAEAEIEERREELGE 90

Basic leucine zipper (bZIP) domain of CREBZF/Zhangfei transcription factor and similar proteins: a DNA-binding and dimerization domain; CREBZF (also called Zhangfei, ZF, LAZip, or SMILE) is a neuronal bZIP transcription factor that is involved in the infection cycle of herpes simplex virus (HSV) and related cellular processes. It suppresses the ability of the HSV transactivator VP16 to initiate the viral replicative cycle. CREBZF has also been implicated in the regulation of the human nerve growth factor receptor trkA and the tumor suppressor p53. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|..
gi 33469976 283 KKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYL 334
Cdd:cd14706   3 EVMSKNAIAARENRLKKKEYVENLEKSVDKLKSENKELKKANKKLQKLVEEL 54

MAEBL; Provisional

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 33469976   271 AKVKGEKLDKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEEVRKARGKKR 349
Cdd:PTZ00121 1320 AKKKAEEAKKKADAAKKKAEEAKKAAEAAKAEAEAAADEAEAAEEKAEAAEKKKEEAKKKADAAKKKAEEKKKADEAKK 1398

Basic leucine zipper (bZIP) domain of CCAAT/enhancer-binding protein gamma (CEBPG): a DNA-binding and dimerization domain; CEBPG is an important regulator of cellular senescence; mouse embryonic fibroblasts deficient of CEBPG proliferated poorly, entered senescence prematurely, and expressed elevated levels of proinflammatory genes. It is also the primary transcription factor that regulates antioxidant and DNA repair transcripts in normal bronchial epithelial cells. In a subset of AML patients with CEBPA hypermethylation, CEBPG is significantly overexpressed. CEBPG is the shortest CEBP protein and it lacks a transactivation domain. It acts as a regulator and buffering reservoir against the transcriptional activities of other CEBP proteins. CEBPs (or C/EBPs) are Basic leucine zipper (bZIP) transcription factors that regulate many cellular processes. There are six CEBP proteins in mammalian cells including CEBPA (alpha), CEBPB (beta), CEBPG (gamma), CEBPD (delta), and CEBPE (epsilon), which all contain highly conserved bZIP domains at their C-termini and variations at their N-terminal regions. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*...
gi 33469976 279 DKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKD 336
Cdd:cd14713   4 DEYRKRRERNNLAVKKSREKSKQKAQETLQRVNQLKEENERLEAKIKLLSKELSVLKD 61

Basic leucine zipper (bZIP) domain of Plant Elongated/Long Hypocotyl5 (HY5)-like transcription factors and similar proteins: a DNA-binding and dimerization domain; This subfamily is predominantly composed of plant Basic leucine zipper (bZIP) transcription factors with similarity to Solanum lycopersicum and Arabidopsis thaliana HY5. Also included are the Dictyostelium discoideum bZIP transcription factors E and F. HY5 plays an important role in seedling development and is a positive regulator of photomorphogenesis. Plants with decreased levels of HY5 show defects in light responses including inhibited photomorphogenesis, loss of alkaloid organization, and reduced carotenoid accumulation. bZIP factors act in networks of homo and heterodimers in the regulation of a diverse set of cellular processes. The bZIP structural motif contains a basic region and a leucine zipper, composed of alpha helices with leucine residues 7 amino acids apart, which stabilize dimerization with a parallel leucine zipper domain. Dimerization of leucine zippers creates a pair of the adjacent basic regions that bind DNA and undergo conformational change. Dimerization occurs in a specific and predictable manner resulting in hundreds of dimers having unique effects on transcription.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|
gi 33469976 281 KLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKE 330
Cdd:cd14704   1 RQRRLLRNRESAQLSRQRKKEYLSELEAKCRELEAENAELEARVELLQAE 50

Cell division protein FtsB [Cell cycle control, cell division, chromosome partitioning];

                        10        20        30
                ....*....|....*....|....*....|....*...
gi 33469976 311 KELEKKNEALKERADSLAKEIQYLK---DLIEEvrKAR 345
Cdd:COG2919  39 AELEAENAKLKARNAELEAEVADLKdgpDYIEE--RAR 74

MAEBL; Provisional

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33469976   266 EKMVAAKVKGEKLDKKLKKMEQNKTAATRYRQKKRAEQEALTGECK----ELEKKNEALKERADSLAKEIQYlKDLIEEV 341
Cdd:PTZ00121 1437 KKKAEEAKKADEAKKKAEEAKKAEEAKKKAEEAKKADEAKKKAEEAkkadEAKKKAEEAKKKADEAKKAAEA-KKKADEA 1515

                  ....*...
gi 33469976   342 RKARGKKR 349
Cdd:PTZ00121 1516 KKAEEAKK 1523

Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33469976 266 EKMVAAKVKGEKLDKKLKKMEQNKTAATRYRQKKRAEQEaLTGECKELEKKNEALKERADsLAKEIQYLKDLIEEVRKAR 345
Cdd:COG4717 102 EELEELEAELEELREELEKLEKLLQLLPLYQELEALEAE-LAELPERLEELEERLEELRE-LEEELEELEAELAELQEEL 179

Uncharacterized protein, contains DUF3084 domain [Function unknown];

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33469976 266 EKMVAAKVKGEKLDKKLKKMEQNKTAATRYRQKKRAEQEALTGECKELEKKNEALKERADSLAKEIQYLKDLIEEVRKAR 345
Cdd:COG4372 101 EELESLQEEAEELQEELEELQKERQDLEQQRKQLEAQIAELQSEIAEREEELKELEEQLESLQEELAALEQELQALSEAE 180

                ....*
gi 33469976 346 GKKRV 350
Cdd:COG4372 181 AEQAL 185