Contacts of the helix formed by residues 35 - 40 (chain A) in PDB entry 5FN4
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 SER 35 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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34A ASN* 1.3 71.6 - - - +
36A VAL* 1.3 58.6 + - - +
37A GLU 3.2 0.7 - - - -
38A ARG* 3.1 27.8 + - - +
39A LYS* 2.9 30.1 + - - +
458B ASP* 3.7 23.8 + - - -
461B ALA* 4.6 3.8 - - - +
462B PHE* 3.6 42.2 + - - +
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Residues in contact with VAL 36 (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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34A ASN 2.6 6.0 + - - -
35A SER* 1.3 79.3 + - - +
37A GLU* 1.3 54.2 + - - -
39A LYS* 3.2 7.6 + - + +
40A ILE* 2.9 28.1 + - + +
461B ALA* 5.1 7.6 - - + +
462B PHE* 6.2 0.4 - - - -
136C ASN* 6.0 0.9 - - + -
137C ILE* 3.4 30.5 - - + +
140C ASP* 3.2 17.7 - - + +
147C VAL* 4.2 4.5 - - + -
156C TYR* 3.8 23.3 - - + +
157C PHE* 3.5 38.4 - - + -
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Residues in contact with GLU 37 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
34A ASN* 2.6 27.1 + - + +
36A VAL* 1.3 69.6 - - - +
38A ARG* 1.3 63.1 - - + +
40A ILE* 3.2 5.4 + - - +
41A TYR* 3.0 54.9 + - - +
659A ARG* 3.8 10.4 + - - -
140C ASP* 2.9 37.7 + - - +
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Residues in contact with ARG 38 (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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34A ASN 4.1 0.2 + - - -
35A SER* 3.1 28.2 + - - +
37A GLU* 1.3 81.0 - - + +
39A LYS* 1.3 63.2 + - - +
40A ILE 3.4 0.3 + - - -
41A TYR 3.6 14.2 - - - +
42A ILE* 5.2 0.3 - - - +
462B PHE* 5.0 21.3 - - + -
149C ILE* 4.7 0.9 - - - +
150C HIS* 4.2 19.9 + - + -
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Residues in contact with LYS 39 (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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35A SER 2.9 11.8 + - - +
36A VAL* 3.3 14.8 - - + +
38A ARG* 1.3 78.8 - - - +
40A ILE* 1.3 62.9 + - - +
462B PHE* 3.0 61.1 + - + +
463B HIS 5.4 0.2 - - - -
464B GLN* 5.2 1.8 + - - +
147C VAL* 3.5 34.6 - - + +
148C GLY 3.9 2.9 + - - -
149C ILE* 3.5 13.7 + - - +
150C HIS* 4.7 8.9 + - - +
152C ASP* 3.5 25.4 + - - +
156C TYR* 3.6 31.5 + - + +
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Residues in contact with ILE 40 (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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36A VAL 2.9 19.5 + - - +
37A GLU* 3.2 7.7 + - - +
39A LYS* 1.3 82.1 - - - +
41A TYR* 1.3 92.7 + - + +
661A PHE* 3.8 10.7 - - + +
662A LEU 4.5 0.3 + - - -
140C ASP* 3.8 24.5 - - + +
145C GLY* 3.4 17.7 - - - +
146C VAL 3.5 13.7 - - - +
147C VAL* 3.3 26.7 - - + +
149C ILE* 3.5 15.8 + - - +
157C PHE* 3.5 28.5 - - + -
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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