Contacts of the strand formed by residues 57 - 60 (chain A) in PDB entry 2PDA
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 THR 57 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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23A GLU 3.6 10.8 + - - -
24A VAL* 3.5 7.1 - - - -
25A ALA 2.8 27.4 + - - +
55A THR 4.5 3.6 + - - -
56A LEU* 1.3 73.7 - - - +
58A ILE* 1.3 60.2 + - - +
59A ARG* 3.5 34.5 - - - +
881B MET* 3.8 21.7 - - + +
884B PHE* 4.3 17.3 - - + -
885B ALA* 3.5 24.3 - - - +
982B GLU* 5.6 0.4 - - - +
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Residues in contact with ILE 58 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25A ALA* 3.2 5.6 - - + +
27A ILE* 3.4 37.5 - - + -
37A GLY 4.7 1.1 - - - +
40A ALA* 4.3 1.1 - - + +
41A ASP* 3.5 31.3 - - + +
44A ALA* 3.4 23.3 - - + -
56A LEU* 3.3 32.8 - - + +
57A THR* 1.3 77.3 - - - +
59A ARG* 1.3 88.3 + - - +
1013A PHE* 4.5 15.0 - - + -
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Residues in contact with ARG 59 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25A ALA 3.1 5.5 + - - -
26A ALA* 3.7 1.3 - - - -
27A ILE* 2.8 29.9 + - - +
57A THR* 3.5 24.5 - - + +
58A ILE* 1.3 91.9 + - - +
60A GLU* 1.3 61.4 + - - +
61A MET* 3.9 2.0 + - - -
1013A PHE* 5.9 1.1 - - - -
877B PHE* 3.9 15.3 - - + -
881B MET* 3.5 35.4 - - + -
884B PHE* 4.5 17.8 - - - -
982B GLU* 3.3 36.4 + - - +
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Residues in contact with GLU 60 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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27A ILE* 3.6 12.1 - - + +
29A PRO* 3.4 30.6 - - + +
59A ARG* 1.3 73.7 - - - +
61A MET* 1.3 74.2 + - - +
968A ASP* 5.9 0.7 - - - -
994A TYR* 4.1 6.7 - - - -
1000A GLN* 3.9 3.8 - - - +
1001A SER* 2.6 32.9 + - - +
1013A PHE* 3.7 38.7 - - + +
877B PHE* 6.0 0.2 - - - -
976B HIS* 2.8 21.8 + - - +
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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