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Conserved domains on  [gi|306518609|ref|NP_001177413|]
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cytochrome P450 3A5 isoform 2 [Homo sapiens]

Protein Classification

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
cytochrome_P450 super family cl41757
cytochrome P450 (CYP) superfamily; Cytochrome P450 (P450, CYP) is a large superfamily of ...
67-106 5.28e-23

cytochrome P450 (CYP) superfamily; Cytochrome P450 (P450, CYP) is a large superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs with > 40% sequence identity are members of the same family. There are approximately 2250 CYP families: mammals, insects, plants, fungi, bacteria, and archaea have around 18, 208, 277, 805, 591, and 14 families, respectively. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop. Their monooxygenase activity relies on the reductive scission of molecular oxygen bound to the P450 heme iron, and the delivery of two electrons to the heme iron during the catalytic cycle. CYPs use a variety of redox partners, such as the eukaryotic diflavin enzyme NADPH-cytochrome P450 oxidoreductase and the bacterial/mitochondrial NAD(P)H-ferredoxin reductase and ferredoxin partners. Some CYPs are naturally linked to their redox partners and others have evolved to bypass requirements for redox partners, and instead react directly with hydrogen peroxide or NAD(P)H to facilitate oxidative or reductive catalysis.


The actual alignment was detected with superfamily member cd20650:

Pssm-ID: 477761 [Multi-domain]  Cd Length: 426  Bit Score: 92.86  E-value: 5.28e-23
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|
gi 306518609  67 KYGKMWGTYEGQLPVLAITDPDVIRTVLVKECYSVFTNRR 106
Cdd:cd20650    1 KYGKVWGIYDGRQPVLAITDPDMIKTVLVKECYSVFTNRR 40
 
Name Accession Description Interval E-value
CYP3A cd20650
cytochrome P450 family 3, subfamily A; The cytochrome P450 3A (CYP3A) subfamily, the most ...
67-106 5.28e-23

cytochrome P450 family 3, subfamily A; The cytochrome P450 3A (CYP3A) subfamily, the most abundant CYP subfamily in the liver, consists of drug-metabolizing enzymes. In humans, there are at least four isoforms: CYP3A4, 3A5, 3A7, and 3A3. CYP3A enzymes are embedded in the endoplasmic reticulum, where they can catalyze a wide variety of biochemical reactions including hydroxylation, N-demethylation, O-dealkylation, S-oxidation, deamination, or epoxidation of substrates. They oxidize a variety of structurally unrelated compounds including steroids, fatty acids, and xenobiotics. The CYP3A subfamily belongs to the large cytochrome P450 (P450, CYP) superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop.


Pssm-ID: 410743 [Multi-domain]  Cd Length: 426  Bit Score: 92.86  E-value: 5.28e-23
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|
gi 306518609  67 KYGKMWGTYEGQLPVLAITDPDVIRTVLVKECYSVFTNRR 106
Cdd:cd20650    1 KYGKVWGIYDGRQPVLAITDPDMIKTVLVKECYSVFTNRR 40
p450 pfam00067
Cytochrome P450; Cytochrome P450s are haem-thiolate proteins involved in the oxidative ...
39-100 1.85e-12

Cytochrome P450; Cytochrome P450s are haem-thiolate proteins involved in the oxidative degradation of various compounds. They are particularly well known for their role in the degradation of environmental toxins and mutagens. They can be divided into 4 classes, according to the method by which electrons from NAD(P)H are delivered to the catalytic site. Sequence conservation is relatively low within the family - there are only 3 absolutely conserved residues - but their general topography and structural fold are highly conserved. The conserved core is composed of a coil termed the 'meander', a four-helix bundle, helices J and K, and two sets of beta-sheets. These constitute the haem-binding loop (with an absolutely conserved cysteine that serves as the 5th ligand for the haem iron), the proton-transfer groove and the absolutely conserved EXXR motif in helix K. While prokaryotic P450s are soluble proteins, most eukaryotic P450s are associated with microsomal membranes. their general enzymatic function is to catalyze regiospecific and stereospecific oxidation of non-activated hydrocarbons at physiological temperatures.


Pssm-ID: 395020 [Multi-domain]  Cd Length: 461  Bit Score: 63.07  E-value: 1.85e-12
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 306518609   39 PGPTPLPLLGNVLSYRQG--LWKFDTECYKKYGKMWGTYEGQLPVLAITDPDVIRTVLVKECYS 100
Cdd:pfam00067   2 PGPPPLPLFGNLLQLGRKgnLHSVFTKLQKKYGPIFRLYLGPKPVVVLSGPEAVKEVLIKKGEE 65
PTZ00404 PTZ00404
cytochrome P450; Provisional
33-105 3.27e-07

cytochrome P450; Provisional


Pssm-ID: 173595 [Multi-domain]  Cd Length: 482  Bit Score: 47.80  E-value: 3.27e-07
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 306518609  33 FKRLG---IPGPTPLPLLGNVLSYRQGLWKFDTECYKKYGKMWGTYEGQLPVLAITDPDVIRTVLVKEcYSVFTNR 105
Cdd:PTZ00404  23 YKKIHkneLKGPIPIPILGNLHQLGNLPHRDLTKMSKKYGGIFRIWFADLYTVVLSDPILIREMFVDN-FDNFSDR 97
 
Name Accession Description Interval E-value
CYP3A cd20650
cytochrome P450 family 3, subfamily A; The cytochrome P450 3A (CYP3A) subfamily, the most ...
67-106 5.28e-23

cytochrome P450 family 3, subfamily A; The cytochrome P450 3A (CYP3A) subfamily, the most abundant CYP subfamily in the liver, consists of drug-metabolizing enzymes. In humans, there are at least four isoforms: CYP3A4, 3A5, 3A7, and 3A3. CYP3A enzymes are embedded in the endoplasmic reticulum, where they can catalyze a wide variety of biochemical reactions including hydroxylation, N-demethylation, O-dealkylation, S-oxidation, deamination, or epoxidation of substrates. They oxidize a variety of structurally unrelated compounds including steroids, fatty acids, and xenobiotics. The CYP3A subfamily belongs to the large cytochrome P450 (P450, CYP) superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop.


Pssm-ID: 410743 [Multi-domain]  Cd Length: 426  Bit Score: 92.86  E-value: 5.28e-23
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|
gi 306518609  67 KYGKMWGTYEGQLPVLAITDPDVIRTVLVKECYSVFTNRR 106
Cdd:cd20650    1 KYGKVWGIYDGRQPVLAITDPDMIKTVLVKECYSVFTNRR 40
p450 pfam00067
Cytochrome P450; Cytochrome P450s are haem-thiolate proteins involved in the oxidative ...
39-100 1.85e-12

Cytochrome P450; Cytochrome P450s are haem-thiolate proteins involved in the oxidative degradation of various compounds. They are particularly well known for their role in the degradation of environmental toxins and mutagens. They can be divided into 4 classes, according to the method by which electrons from NAD(P)H are delivered to the catalytic site. Sequence conservation is relatively low within the family - there are only 3 absolutely conserved residues - but their general topography and structural fold are highly conserved. The conserved core is composed of a coil termed the 'meander', a four-helix bundle, helices J and K, and two sets of beta-sheets. These constitute the haem-binding loop (with an absolutely conserved cysteine that serves as the 5th ligand for the haem iron), the proton-transfer groove and the absolutely conserved EXXR motif in helix K. While prokaryotic P450s are soluble proteins, most eukaryotic P450s are associated with microsomal membranes. their general enzymatic function is to catalyze regiospecific and stereospecific oxidation of non-activated hydrocarbons at physiological temperatures.


Pssm-ID: 395020 [Multi-domain]  Cd Length: 461  Bit Score: 63.07  E-value: 1.85e-12
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 306518609   39 PGPTPLPLLGNVLSYRQG--LWKFDTECYKKYGKMWGTYEGQLPVLAITDPDVIRTVLVKECYS 100
Cdd:pfam00067   2 PGPPPLPLFGNLLQLGRKgnLHSVFTKLQKKYGPIFRLYLGPKPVVVLSGPEAVKEVLIKKGEE 65
CYP3A-like cd11055
cytochrome P450 family 3, subfamily A and similar cytochrome P450s; This family includes ...
67-107 2.62e-12

cytochrome P450 family 3, subfamily A and similar cytochrome P450s; This family includes vertebrate CYP3A subfamily enzymes and CYP5a1, and similar proteins. CYP5A1, also called thromboxane-A synthase, converts prostaglandin H2 into thromboxane A2, a biologically active metabolite of arachidonic acid. CYP3A enzymes are drug-metabolizing enzymes embedded in the endoplasmic reticulum, where they can catalyze a wide variety of biochemical reactions including hydroxylation, N-demethylation, O-dealkylation, S-oxidation, deamination, or epoxidation of substrates. The CYP3A-like family belongs to the large cytochrome P450 (P450, CYP) superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop.


Pssm-ID: 410678 [Multi-domain]  Cd Length: 422  Bit Score: 62.60  E-value: 2.62e-12
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|.
gi 306518609  67 KYGKMWGTYEGQLPVLAITDPDVIRTVLVKEcYSVFTNRRI 107
Cdd:cd11055    1 KYGKVFGLYFGTIPVIVVSDPEMIKEILVKE-FSNFTNRPL 40
PTZ00404 PTZ00404
cytochrome P450; Provisional
33-105 3.27e-07

cytochrome P450; Provisional


Pssm-ID: 173595 [Multi-domain]  Cd Length: 482  Bit Score: 47.80  E-value: 3.27e-07
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 306518609  33 FKRLG---IPGPTPLPLLGNVLSYRQGLWKFDTECYKKYGKMWGTYEGQLPVLAITDPDVIRTVLVKEcYSVFTNR 105
Cdd:PTZ00404  23 YKKIHkneLKGPIPIPILGNLHQLGNLPHRDLTKMSKKYGGIFRIWFADLYTVVLSDPILIREMFVDN-FDNFSDR 97
CYP5A1 cd20649
cytochrome P450 family 5, subfamily A, polypeptide 1, also called thromboxane-A synthase; ...
67-105 7.58e-06

cytochrome P450 family 5, subfamily A, polypeptide 1, also called thromboxane-A synthase; Cytochrome P450 5A1 (CYP5A1), also called thromboxane-A synthase (EC 5.3.99.5) or thromboxane synthetase, converts prostaglandin H2 into thromboxane A2, a biologically active metabolite of arachidonic acid that has been implicated in stroke, asthma, and various cardiovascular diseases, due to its acute and chronic effects in promoting platelet aggregation, vasoconstriction, bronchoconstriction, and proliferation. CYP5A1 belongs to the large cytochrome P450 (P450, CYP) superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop.


Pssm-ID: 410742 [Multi-domain]  Cd Length: 457  Bit Score: 44.06  E-value: 7.58e-06
                         10        20        30
                 ....*....|....*....|....*....|....*....
gi 306518609  67 KYGKMWGTYEGQLPVLAITDPDVIRTVLVKEcYSVFTNR 105
Cdd:cd20649    1 KYGPICGYYIGRRMFVVIAEPDMIKQVLVKD-FNNFTNR 38
PLN03112 PLN03112
cytochrome P450 family protein; Provisional
39-105 8.57e-05

cytochrome P450 family protein; Provisional


Pssm-ID: 215583 [Multi-domain]  Cd Length: 514  Bit Score: 40.96  E-value: 8.57e-05
                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 306518609  39 PGPTPLPLLGNVLSYRQGLWKFDTECYKKYGKMWGTYEGQLPVLAITDPDVIRTVLVKEcYSVFTNR 105
Cdd:PLN03112  35 PGPPRWPIVGNLLQLGPLPHRDLASLCKKYGPLVYLRLGSVDAITTDDPELIREILLRQ-DDVFASR 100
PLN02183 PLN02183
ferulate 5-hydroxylase
39-105 1.23e-04

ferulate 5-hydroxylase


Pssm-ID: 165828 [Multi-domain]  Cd Length: 516  Bit Score: 40.60  E-value: 1.23e-04
                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 306518609  39 PGPTPLPLLGNVLSYRQ----GLWKFDtecyKKYGKMWGTYEGQLPVLAITDPDVIRTVL-VKEcySVFTNR 105
Cdd:PLN02183  39 PGPKGLPIIGNMLMMDQlthrGLANLA----KQYGGLFHMRMGYLHMVAVSSPEVARQVLqVQD--SVFSNR 104
CYP6-like cd11056
cytochrome P450 family 6 and similar cytochrome P450s; This family is composed of cytochrome ...
73-107 2.38e-04

cytochrome P450 family 6 and similar cytochrome P450s; This family is composed of cytochrome P450s from insects and crustaceans, including the CYP6, CYP9 and CYP310 subfamilies, which are involved in the metabolism of insect hormones and xenobiotic detoxification. The CYP6-like family belongs to the large cytochrome P450 (P450, CYP) superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop.


Pssm-ID: 410679 [Multi-domain]  Cd Length: 429  Bit Score: 39.44  E-value: 2.38e-04
                         10        20        30
                 ....*....|....*....|....*....|....*
gi 306518609  73 GTYEGQLPVLAITDPDVIRTVLVKEcYSVFTNRRI 107
Cdd:cd11056    7 GIYLFRRPALLVRDPELIKQILVKD-FAHFHDRGL 40
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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