Contacts of the helix formed by residues 45 - 51 (chain L) in PDB entry 5U0A
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with LEU 45 (chain L).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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58A THR* 5.8 5.4 - - + -
59A ARG* 3.1 59.6 - - + +
44L MET* 1.3 86.7 - - + +
46L ALA* 1.3 58.1 + - - +
48L HIS* 2.9 27.4 + - - +
49L ARG* 3.0 14.3 + - - +
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Residues in contact with ALA 46 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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30L ALA* 3.6 37.9 - - + +
31L LEU* 4.8 1.3 - - - -
44L MET* 3.2 1.9 - - - +
45L LEU* 1.3 76.1 - - - +
47L ALA* 1.3 64.7 + - - +
49L ARG* 3.2 15.4 + - - +
50L VAL* 3.1 32.5 + - + +
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Residues in contact with ALA 47 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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30L ALA 4.8 3.1 + - - +
31L LEU* 3.9 25.4 - - + +
44L MET* 3.3 29.1 + - + +
45L LEU 3.3 0.4 - - - -
46L ALA* 1.3 77.8 - - - +
48L HIS* 1.3 56.9 + - - +
51L VAL* 2.9 27.5 + - + -
82L TYR* 3.2 31.3 - - + +
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Residues in contact with HIS 48 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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59A ARG* 4.7 17.7 + - + -
60A ASN* 6.2 1.8 - - - -
44L MET* 2.9 49.2 + - + +
45L LEU* 2.9 12.8 + - + +
47L ALA* 1.3 77.6 - - - +
49L ARG* 1.3 55.6 + - - +
50L VAL 3.3 0.2 - - - -
52L ALA* 3.0 25.7 - - + +
82L TYR* 3.4 33.5 + + - -
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Residues in contact with ARG 49 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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27L ALA* 6.1 2.8 - - - +
45L LEU 3.0 13.3 + - - +
46L ALA* 3.2 15.4 + - - +
48L HIS* 1.3 76.7 - - - +
50L VAL* 1.3 70.3 + - - +
52L ALA 4.9 0.2 - - - -
53L PRO* 5.0 4.8 - - - +
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Residues in contact with VAL 50 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13L LEU* 5.2 4.7 - - + +
16L ARG* 5.4 15.6 + - + +
17L VAL* 5.7 3.1 - - + -
20L LEU* 3.8 31.4 - - + -
27L ALA* 5.0 10.3 - - + +
30L ALA* 6.2 0.4 - - + -
31L LEU* 4.4 16.8 - - + -
46L ALA* 3.1 21.2 + - + +
47L ALA 4.1 1.1 - - - +
48L HIS 3.3 0.2 - - - -
49L ARG* 1.3 92.6 - - + +
51L VAL* 1.3 75.1 + - + +
52L ALA 3.3 0.9 - - - -
53L PRO* 3.3 16.6 - - - +
54L TYR* 5.5 1.7 - - - -
44O G 5.1 0.7 + - - -
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Residues in contact with VAL 51 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13L LEU* 3.6 37.5 - - + -
17L VAL* 6.2 0.4 - - + -
31L LEU* 4.3 10.3 - - + -
47L ALA* 2.9 13.7 + - + +
50L VAL* 1.3 84.5 - - + +
52L ALA* 1.3 66.1 + - - +
53L PRO 3.3 0.2 - - - -
54L TYR* 2.9 21.2 + - - +
55L VAL* 4.2 2.2 - - + +
81L PHE* 4.1 16.8 - - + +
82L TYR* 3.5 29.8 - - + -
85L ALA* 3.9 20.9 - - + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il